Utilization of Superheroes Social Skills to Reduce Disruptive and Aggressive Behavior

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O'Handley, Roderick D.; Radley, Keith C.; Cavell, Hannah J.

2016-01-01

The current pilot study investigated the effectiveness of the Superheroes Social Skills program in decreasing disruptive and aggressive behavior of elementary-age students with high-incidence disabilities. Six students in a self-contained classroom, identified as displaying high rates of disruptive and aggressive behavior toward peers, were…

Behaviors induced or disrupted by complex partial seizures.

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Leung, L S; Ma, J; McLachlan, R S

2000-09-01

We reviewed the neural mechanisms underlying some postictal behaviors that are induced or disrupted by temporal lobe seizures in humans and animals. It is proposed that the psychomotor behaviors and automatisms induced by temporal lobe seizures are mediated by the nucleus accumbens. A non-convulsive hippocampal afterdischarge in rats induced an increase in locomotor activity, which was suppressed by the injection of dopamine D(2) receptor antagonist in the nucleus accumbens, and blocked by inactivation of the medial septum. In contrast, a convulsive hippocampal or amygdala seizure induced behavioral hypoactivity, perhaps by the spread of the seizure into the frontal cortex and opiate-mediated postictal depression. Mechanisms underlying postictal psychosis, memory disruption and other long-term behavioral alterations after temporal lobe seizures, are discussed. In conclusion, many of the changes of postictal behaviors observed after temporal lobe seizures in humans may be found in animals, and the basis of the behavioral change may be explained as a change in neural processing in the temporal lobe and the connecting subcortical structures.

The Structure of Childhood Disruptive Behaviors

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Martel, Michelle M.; Gremillion, Monica; Roberts, Bethan; von Eye, Alexander; Nigg, Joel T.

2010-01-01

Attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) frequently co-occur. Comorbidity of these 2 childhood disruptive behavior domains has not been satisfactorily explained at either a structural or etiological level. The current study evaluated a bifactor model, which allows for a "g" factor in addition to…

Disruptive behavior in preschool children: distinguishing normal misbehavior from markers of current and later childhood conduct disorder.

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Hong, Ji S; Tillman, Rebecca; Luby, Joan L

2015-03-01

To investigate which disruptive behaviors in preschool were normative and transient vs markers of conduct disorder, as well as which disruptive behaviors predicted the persistence of conduct disorder into school age. Data from a longitudinal study of preschool children were used to investigate disruptive behaviors. Caregivers of preschoolers ages 3.0-5.11 years (n = 273) were interviewed using the Preschool Age Psychiatric Assessment to derive the following diagnostic groups: conduct disorder, externalizing disorder without conduct disorder, internalizing disorder without externalizing disorder, and healthy. At school age, participants were again assessed via an age-appropriate diagnostic interview. Logistic and linear regression with pairwise group comparisons was used to investigate clinical markers of preschool conduct disorder and predictors of school age conduct disorder. Losing one's temper, low-intensity destruction of property, and low-intensity deceitfulness/stealing in the preschool period were found in both healthy and disordered groups. In contrast, high-intensity argument/defiant behavior, both low- and high-intensity aggression to people/animals, high-intensity destruction of property, high-intensity deceitfulness/stealing, and high-intensity peer problems were markers of preschool conduct disorder and predictors of school age conduct disorder. Inappropriate sexual behavior was not a marker for preschool conduct disorder but was a predictor of school age conduct disorder. These findings provide a guide for primary care clinicians to help identify preschoolers with clinical conduct disorder and those who are at risk for persistent conduct disorder in childhood. Preschoolers displaying these symptoms should be targeted for mental health assessment. Copyright © 2015 Elsevier Inc. All rights reserved.

Estrogens can disrupt amphibian mating behavior.

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Frauke Hoffmann

Full Text Available The main component of classical contraceptives, 17α-ethinylestradiol (EE2, has high estrogenic activity even at environmentally relevant concentrations. Although estrogenic endocrine disrupting compounds are assumed to contribute to the worldwide decline of amphibian populations by adverse effects on sexual differentiation, evidence for EE2 affecting amphibian mating behaviour is lacking. In this study, we demonstrate that EE2 exposure at five different concentrations (0.296 ng/L, 2.96 ng/L, 29.64 ng/L, 2.96 µg/L and 296.4 µg/L can disrupt the mating behavior of adult male Xenopus laevis. EE2 exposure at all concentrations lowered male sexual arousal, indicated by decreased proportions of advertisement calls and increased proportions of the call type rasping, which characterizes a sexually unaroused state of a male. Additionally, EE2 at all tested concentrations affected temporal and spectral parameters of the advertisement calls, respectively. The classical and highly sensitive biomarker vitellogenin, on the other hand, was only induced at concentrations equal or higher than 2.96 µg/L. If kept under control conditions after a 96 h EE2 exposure (2.96 µg/L, alterations of male advertisement calls vanish gradually within 6 weeks and result in a lower sexual attractiveness of EE2 exposed males toward females as demonstrated by female choice experiments. These findings indicate that exposure to environmentally relevant EE2 concentrations can directly disrupt male mate calling behavior of X. laevis and can indirectly affect the mating behavior of females. The results suggest the possibility that EE2 exposure could reduce the reproductive success of EE2 exposed animals and these effects might contribute to the global problem of amphibian decline.

Using Mental Health Consultation to Decrease Disruptive Behaviors in Preschoolers: Adapting an Empirically-Supported Intervention

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Williford, Amanda P.; Shelton, Terri L.

2008-01-01

Background: This study examined the effectiveness of an adaptation of an empirically-supported intervention delivered using mental health consultation to preschoolers who displayed elevated disruptive behaviors. Method: Ninety-six preschoolers, their teachers, and their primary caregivers participated. Children in the intervention group received…

Technology-enhanced program for child disruptive behavior disorders: development and pilot randomized control trial.

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Jones, Deborah J; Forehand, Rex; Cuellar, Jessica; Parent, Justin; Honeycutt, Amanda; Khavjou, Olga; Gonzalez, Michelle; Anton, Margaret; Newey, Greg A

2014-01-01

Early onset disruptive behavior disorders are overrepresented in low-income families; yet these families are less likely to engage in behavioral parent training (BPT) than other groups. This project aimed to develop and pilot test a technology-enhanced version of one evidence-based BPT program, Helping the Noncompliant Child (HNC). The aim was to increase engagement of low-income families and, in turn, child behavior outcomes, with potential cost-savings associated with greater treatment efficiency. Low-income families of 3- to 8-year-old children with clinically significant disruptive behaviors were randomized to and completed standard HNC (n = 8) or Technology-Enhanced HNC (TE-HNC; n = 7). On average, caregivers were 37 years old; 87% were female, and 80% worked at least part-time. More than half (53%) of the youth were boys; the average age of the sample was 5.67 years. All families received the standard HNC program; however, TE-HNC also included the following smartphone enhancements: (a) skills video series, (b) brief daily surveys, (c) text message reminders, (d) video recording home practice, and (e) midweek video calls. TE-HNC yielded larger effect sizes than HNC for all engagement outcomes. Both groups yielded clinically significant improvements in disruptive behavior; however, findings suggest that the greater program engagement associated with TE-HNC boosted child treatment outcome. Further evidence for the boost afforded by the technology is revealed in family responses to postassessment interviews. Finally, cost analysis suggests that TE-HNC families also required fewer sessions than HNC families to complete the program, an efficiency that did not compromise family satisfaction. TE-HNC shows promise as an innovative approach to engaging low-income families in BPT with potential cost-savings and, therefore, merits further investigation on a larger scale.

Disruptive Behaviors in an Emergency Department: the Perspective of Physicians and Nurses

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Maryam Maddineshat

2016-09-01

Full Text Available Introduction: Disruptive behaviors cause many problems in the workplace, especially in the emergency department (ED.This study was conducted to assess the physician’s and nurse’s perspective toward disruptive behaviors in the emergency department. Methods: In this cross-sectional study a total of 45 physicians and 110 nurses working in the emergency department of five general hospitals in Bojnurd participated. Data were collected using a translated, changed, and validated questionnaire (25 item. The collected data were analyzed by SPSS ver.13 software. Results: Findings showed that physicians gave more importance to nurse-physician relationships in the ED when compared to nurses’ perspective (90% vs. 70%. In this study, 81% of physicians and 52% of nurses exhibited disruptive behaviors. According to the participants these behaviors could result in adverse outcomes, such as stress (97%, job dissatisfaction and can compromise patient safety (53%, quality of care (72%, and errors (70%. Conclusion: Disruptive behaviors could have a negative effects on relationships and collaboration among medical staffs, and on patients’ quality of care as well. It is essential to provide some practical strategies for prevention of these behaviors.

The Multifaceted Impact of Peer Relations on Aggressive-Disruptive Behavior in Early Elementary School

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Powers, Christopher J.; Bierman, Karen L.

2012-01-01

Following a large, diverse sample of 4096 children in 27 schools, this study evaluated the impact of three aspects of peer relations, measured concurrently, on subsequent child aggressive-disruptive behavior during early elementary school – peer-dislike, reciprocated friends' aggressiveness, and classroom levels of aggressive-disruptive behavior. Teachers rated child aggressive-disruptive behavior in first and third grade, and peer relations were assessed during second grade. Results indicate...

Effectiveness of the Incredible Years parent training to modify disruptive and prosocial child behavior: a meta-analytic review.

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Menting, Ankie T A; Orobio de Castro, Bram; Matthys, Walter

2013-12-01

The present meta-analytic review examined effectiveness of the Incredible Years parent training (IYPT) regarding disruptive and prosocial child behavior, and aimed to explain variability in intervention outcomes. Fifty studies, in which an intervention group receiving the IYPT was compared to a comparison group immediately after intervention, were included in the analyses. Results showed that the IYPT is an effective intervention. Positive effects for distinct outcomes and distinct informants were found, including a mean effect size of d=.27 concerning disruptive child behavior across informants. For parental report, treatment studies were associated with larger effects (d=.50) than indicated (d=.20) and selective (d=.13) prevention studies. Furthermore, initial severity of child behavior revealed to be the strongest predictor of intervention effects, with larger effects for studies including more severe cases. Findings indicate that the IYPT is successful in improving child behavior in a diverse range of families, and that the parent program may be considered well-established. © 2013.

Cumulative Effects of Mothers' Risk and Promotive Factors on Daughters' Disruptive Behavior

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van der Molen, Elsa; Hipwell, Alison E.; Vermeiren, Robert; Loeber, Rolf

2012-01-01

Little is known about the ways in which the accumulation of maternal factors increases or reduces risk for girls' disruptive behavior during preadolescence. In the current study, maternal risk and promotive factors and the severity of girls' disruptive behavior were assessed annually among girls' ages 7-12 in an urban community sample (N = 2043).…

Perceived Distributive Injustice, the Key Factor in Nurse's Disruptive Behaviors: A Qualitative Study.

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Afzali, Mahboobeh; Mokhtari Nouri, Jamileh; Ebadi, Abbas; Khademolhoseyni, Seyyed Mohamad; Rejeh, Nahid

2017-09-01

Introduction: Disruptive behaviors are one of the most topics affecting the wellbeing of organizations, therefore, it has become a significant research area. The purpose of this study was to determine experiences and perceptions of nurses who were involved in disruptive behaviors. Methods: A qualitative study was conducted by using a conventional content analysis. The data was obtained through 15 unstructured and in-depth interviews with nurses in six hospitals of Tehran city, Iran. A purposive sampling method was used. All interviews were recorded, typed and analyzed simultaneously. Results: The main theme obtained from the nurses' views and experiences analysis about disruptive behaviors were injustice and discrimination in hospitals including injustice in payments, work division, interactions, and judgment and evaluations. Conclusion: It seems that the best way to prevent and correct the disruptive behaviors was to eliminate the perceived nurses' injustice feeling and establishment the justice and fairness in organizations.

Affective network and default mode network in depressive adolescents with disruptive behaviors

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Kim SM

2015-12-01

Full Text Available Sun Mi Kim,1 Sung Yong Park,1 Young In Kim,1 Young Don Son,2 Un-Sun Chung,3,4 Kyung Joon Min,1 Doug Hyun Han1 1Department of Psychiatry, School of Medicine, Chung-Ang University, Seoul, 2Department of Biomedical Engineering, Gachon University of Medicine and Science, Incheon, 3Department of Psychiatry, School of Medicine, Kyungpook National University, 4School Mental Health Resources and Research Center, Kyungpook National University Children’s Hospital, Daegu, South Korea Aim: Disruptive behaviors are thought to affect the progress of major depressive disorder (MDD in adolescents. In resting-state functional connectivity (RSFC studies of MDD, the affective network (limbic network and the default mode network (DMN have garnered a great deal of interest. We aimed to investigate RSFC in a sample of treatment-naïve adolescents with MDD and disruptive behaviors.Methods: Twenty-two adolescents with MDD and disruptive behaviors (disrup-MDD and 20 age- and sex-matched healthy control (HC participants underwent resting-state functional magnetic resonance imaging (fMRI. We used a seed-based correlation approach concerning two brain circuits including the affective network and the DMN, with two seed regions ­including the bilateral amygdala for the limbic network and the bilateral posterior cingulate cortex (PCC for the DMN. We also observed a correlation between RSFC and severity of depressive symptoms and disruptive behaviors.Results: The disrup-MDD participants showed lower RSFC from the amygdala to the orbitofrontal cortex and parahippocampal gyrus compared to HC participants. Depression scores in disrup-MDD participants were negatively correlated with RSFC from the amygdala to the right orbitofrontal cortex. The disrup-MDD participants had higher PCC RSFC compared to HC participants in a cluster that included the left precentral gyrus, left insula, and left parietal lobe. Disruptive behavior scores in disrup-MDD patients were positively

Analyzing the concept of disruptive behavior in healthcare work: an integrative review*

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Roberta Meneses Oliveira

Full Text Available Abstract OBJECTIVE To analyze the concept of disruptive behavior in healthcare work. METHOD An integrative review carried out in the theoretical phase of a qualitative research substantiated by the theoretical framework of the Hybrid Model of Concept Development. The search for articles was conducted in the CINAHL, LILACS, PsycINFO, PubMed and SciVerse Scopus databases in 2013. RESULTS 70 scientific articles answered the guiding question and lead to attributes of disruptive behavior, being: incivility, psychological violence and physical/sexual violence; with their main antecedents (intrapersonal, interpersonal and organizational being: personality characteristics, stress and work overload; and consequences of: workers' moral/mental distress, compromised patient safety, labor loss, and disruption of communication, collaboration and teamwork. CONCLUSION Analysis of the disruptive behavior concept in healthcare work showed a construct in its theoretical stage that encompasses different disrespectful conduct adopted by health workers in the hospital context, which deserve the attention of leadership for better recognition and proper handling of cases and their consequences.

Pediatric emotional dysregulation and behavioral disruptiveness treated with hypnosis: a time-series design.

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Iglesias, Alex; Iglesias, Adam

2014-01-01

A case of pediatric oppositional defiant disorder (ODD) with concomitant emotional dysregulation and secondary behavioral disruptiveness was treated with hypnosis by means of the hypnotic hold, a method adapted by the authors. An A-B-A-B time-series design with multiple replications was employed to measure the relationship of the hypnotic treatment to the dependent measure: episodes of emotional dysregulation with accompanying behavioral disruptiveness. The findings indicated a statistically significant relationship between the degree of change from phase to phase and the treatment. Follow-up at 6 months indicated a significant reduction of the frequency of targeted episodes of emotional dysregulation and behavioral disruptiveness at home.

Characterizing Community-Based Mental Health Services for Children with Autism Spectrum Disorders and Disruptive Behavior Problems

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Brookman-Frazee, Lauren I.; Taylor, Robin; Garland, Ann F.

2010-01-01

This study describes the characteristics of children with autism spectrum disorders (ASD) with disruptive behavior problems served in community-based mental health clinics, characterizes psychotherapy process and outcome, and examines differences between children with ASD and a non-ASD comparison group. Results indicate that children with ASD…

Methylphenidate Has Superior Efficacy Over Parent-Child Interaction Therapy for Preschool Children with Disruptive Behaviors.

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van der Veen-Mulders, Lianne; van den Hoofdakker, Barbara J; Nauta, Maaike H; Emmelkamp, Paul; Hoekstra, Pieter J

2018-02-01

To compare the effectiveness between parent-child interaction therapy (PCIT) and methylphenidate in preschool children with attention-deficit/hyperactivity disorder (ADHD) symptoms and disruptive behaviors who had remaining significant behavior problems after previous behavioral parent training. We included 35 preschool children, ranging in age between 3.4 and 6.0 years. Participants were randomized to PCIT (n = 18) or methylphenidate (n = 17). Outcome measures were maternal ratings of the intensity and number of behavior problems and severity of ADHD symptoms. Changes from pretreatment to directly posttreatment were compared between groups using two-way mixed analysis of variance. We also made comparisons of both treatments to a nonrandomized care as usual (CAU) group (n = 17) regarding intensity and number of behavior problems. All children who started one of the treatments were included in the analyses. Mothers reported a significantly more decreased intensity of behavior problems after methylphenidate (pre-post effect size d = 1.50) compared with PCIT (d = 0.64). ADHD symptoms reduced significantly over time only after methylphenidate treatment (d = 0.48) and not after PCIT. Changes over time of children in the CAU treatment were nonsignificant. Although methylphenidate was more effective than PCIT, both interventions may be effective in the treatment of preschool children with disruptive behaviors. Our findings are preliminary as our sample size was small and the use of methylphenidate in preschool children lacks profound safety data as reflected by its off-label status. More empirical support is needed from studies with larger sample sizes.

Overweight and Obese Status in Children with Autism Spectrum Disorder and Disruptive Behavior

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Criado, Kristen K.; Sharp, William G.; McCracken, Courtney E.; De Vinck-Baroody, Oana; Dong, Liansai; Aman, Michael G.; McDougle, Christopher J.; McCracken, James T.; Eugene Arnold, L.; Weitzman, Carol; Leventhal, John M.; Vitiello, Benedetto; Scahill, Lawrence

2018-01-01

Overweight and obesity are common in pediatric populations. Children with autism spectrum disorder and disruptive behavior may be at higher risk. This study examined whether children with autism spectrum disorder and disruptive behavior are more likely to be overweight or obese than matched controls. Baseline data from medication-free children…

Behavior Bingo: The Effects of a Culturally Relevant Group Contingency Intervention for Students with EBD

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Collins, Tai A.; Hawkins, Renee O.; Flowers, Emily M.; Kalra, Hilary D.; Richard, Jessie; Haas, Lauren E.

2018-01-01

Students with emotional and behavioral disorders (EBD) have difficulty with academic engagement during independent seatwork tasks. The goal of the current study was to evaluate the effectiveness of Behavior Bingo, a novel interdependent group contingency intervention, on the academic engagement, off-task, and disruptive behavior of students with…

Maternal Characteristics Predicting Young Girls' Disruptive Behavior

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van der Molen, Elsa; Hipwell, Alison E.; Vermeiren, Robert; Loeber, Rolf

2011-01-01

Little is known about the relative predictive utility of maternal characteristics and parenting skills on the development of girls' disruptive behavior. The current study used five waves of parent- and child-report data from the ongoing Pittsburgh Girls Study to examine these relationships in a sample of 1,942 girls from age 7 to 12 years.…

Endocrine Disruption of Vasopressin Systems and Related Behaviors

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Heather B. Patisaul

2017-06-01

Full Text Available Endocrine disrupting chemicals (EDCs are chemicals that interfere with the organizational or activational effects of hormones. Although the vast majority of the EDC literature focuses on steroid hormone signaling related impacts, growing evidence from a myriad of species reveals that the nonapeptide hormones vasopressin (AVP and oxytocin (OT may also be EDC targets. EDCs shown to alter pathways and behaviors coordinated by AVP and/or OT include the plastics component bisphenol A (BPA, the soy phytoestrogen genistein (GEN, and various flame retardants. Many effects are sex specific and likely involve action at nuclear estrogen receptors. Effects include the elimination or reversal of well-characterized sexually dimorphic aspects of the AVP system, including innervation of the lateral septum and other brain regions critical for social and other non-reproductive behaviors. Disruption of magnocellular AVP function has also been reported in rats, suggesting possible effects on hemodynamics and cardiovascular function.

Indirect Effects of Functional Communication Training on Non-Targeted Disruptive Behavior

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Schieltz, Kelly M.; Wacker, David P.; Harding, Jay W.; Berg, Wendy K.; Lee, John F.; Padilla Dalmau, Yaniz C.; Mews, Jayme; Ibrahimovic, Muska

2011-01-01

The purpose of this study was to evaluate the effects of functional communication training (FCT) on the occurrence of non-targeted disruptive behavior. The 10 participants were preschool-aged children with developmental disabilities who engaged in both destructive (property destruction, aggression, self-injury) and disruptive (hand flapping,…

Violent and disruptive behavior among drug-involved prisoners: relationship with psychiatric symptoms.

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Friedmann, Peter D; Melnick, Gerald; Jiang, Lan; Hamilton, Zachary

2008-01-01

This study examines the relationship between psychiatric symptoms and violent/disruptive behavior among 192 inmates who participated in prison-based substance abuse treatment. Participants came from two sites able to provide narrative reports of disciplinary actions in the Criminal Justice Drug Abuse Treatment Studies' Co-Occurring Disorders Screening Instrument study. In multivariate logistic models, a lifetime history of thought insertion/control ideation (OR, 11.6; 95% CI, 1.8-75.2), antisocial personality disorder (OR, 3.3; 95% CI, 1.2-8.9), and disciplinary action related to possession of controlled substances or contraband (OR, 4.9; 95% CI, 1.9-12.3) were associated with increased risk for violent or disruptive behavior while in prison, whereas lifetime phobic symptoms (OR, 0.2; 95% CI, 0.1-0.54) and high school graduation (OR, 0.4; 95% CI, 0.2-1.0) were associated with a decreased risk of violence and disruptive behavior in general. We conclude that, among inmates in substance abuse treatment, symptoms that increase risk for violence or disruptive behavior include thought control/insertion ideation and disciplinary infractions related to controlled substances, contraband, or failure to participate in assigned programs, as well a history of antisocial personality disorder.

Technology-Assisted Parent Training Programs for Children and Adolescents With Disruptive Behaviors: A Systematic Review.

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Baumel, Amit; Pawar, Aditya; Mathur, Nandita; Kane, John M; Correll, Christoph U

To systematically review digitally assisted parent training programs (DPTs) targeting the treatment of children and adolescents with disruptive behaviors. A search was conducted using PubMed, PsycINFO, and EMBASE databases for peer-reviewed studies published between January 1, 2000, and March 1, 2016. Reference lists of included and review articles were searched manually for additional references. Broad search terms in varying combinations for parent, training, technologies, and disruptive behavior problems were used. We included English-language articles reporting on the effectiveness of DPTs targeting child or adolescent disruptive behaviors (eg, conduct disorder, oppositional defiant disorder). DPTs designed to use digital media or software programs not to be primarily used within a therapy setting (eg, group, face-to-face) were included. Study design, recruitment and sample characteristics, theoretical background, digital program features, user's engagement, and measures of child behavior were extracted. Fourteen intervention studies (n = 2,427, 58% male, 1,500 in DPT conditions, 12 randomized trials) examining 10 programs met inclusion criteria. Interventions included self-directed noninteractive (eg, podcasts; 3 studies) and interactive (eg, online software; 4 studies) DPTs, remotely administered DPTs combined with professional phone-based coaching (2 studies), and a smartphone enhancement of standard treatment. Interventions were delivered over a mean ± SD period of 8.7 ± 4.2 weeks, most (11/14; 78.6%) were remotely administered, and all recruitment procedures included an outreach for parents outside of mental health-care settings. For programs with > 5 sessions, the mean ± SD completion rate of available sessions was 68.6% ± 13.1%. In comparison to no treatment control, self-directed programs yielded significant improvements in child behavior for children (age technology enhancements may increase engagement and outcomes of standard treatment. The

Linking Informant Discrepancies to Observed Variations in Young Children's Disruptive Behavior

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De Los Reyes, Andres; Henry, David B.; Tolan, Patrick H.; Wakschlag, Lauren S.

2009-01-01

Prior work has not tested the basic theoretical notion that informant discrepancies in reports of children's behavior exist, in part, because different informants observe children's behavior in different settings. We examined patterns of observed preschool disruptive behavior across varying social contexts in the laboratory and whether they…

Intellectual Disability Modifies Gender Effects on Disruptive Behaviors

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Einfeld, Stewart L.; Gray, Kylie M.; Ellis, Louise A.; Taffe, John; Emerson, Eric; Tonge, Bruce J.; Horstead, Sian K.

2010-01-01

In typically developing children, boys are more commonly diagnosed than girls with disruptive behavior disorders, namely, attention-deficit/hyperactivity disorder, conduct disorder, and oppositional defiant disorder. For children with intellectual disability (ID), the evidence for this gender effect is less clear. In this report we examine gender…

Perceived Distributive Injustice, the Key Factor in Nurse’s Disruptive Behaviors: A Qualitative Study

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Mahboobeh Afzali

2017-09-01

Full Text Available Introduction: Disruptive behaviors are one of the most topics affecting the wellbeing of organizations, therefore, it has become a significant research area. The purpose of this study was to determine experiences and perceptions of nurses who were involved in disruptive behaviors. Methods: A qualitative study was conducted by using a conventional content analysis. The data was obtained through 15 unstructured and in-depth interviews with nurses in six hospitals of Tehran city, Iran. A purposive sampling method was used. All interviews were recorded, typed and analyzed simultaneously. Results: The main theme obtained from the nurses’ views and experiences analysis about disruptive behaviors were injustice and discrimination in hospitals including injustice in payments, work division, interactions, and judgment and evaluations. Conclusion: It seems that the best way to prevent and correct the disruptive behaviors was to eliminate the perceived nurses’ injustice feeling and establishment the justice and fairness in organizations.

School Counselors Serving Students with Disruptive Behavior Disorders

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Grothaus, Tim

2013-01-01

School counselors are in a prime position to collaborate with school and community stakeholders to both prevent and respond to the challenges experienced and exhibited by students with one or more disruptive behavior disorders (DBD). In this article, the DBDs discussed include conduct disorder, oppositional defiant disorder, intermittent explosive…

Transported Versus Homegrown Parenting Interventions for Reducing Disruptive Child Behavior : A Multilevel Meta-Regression Study

NARCIS (Netherlands)

Leijten, P.; Melendez-Torres, G.J.; Knerr, W.; Gardner, F.

OBJECTIVE: Children's disruptive behavior problems place children at high risk for oppositional defiant disorder and conduct disorder, and carry a high burden for individuals and society. Policy makers and service providers aiming to reduce children's disruptive behavior problems must often choose

Randomized Trial of Anger Control Training for Adolescents with Tourette's Syndrome and Disruptive Behavior

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Sukhdolsky, Denis G.; Vitulano, Lawrence A.; Carroll, Deirdre H.; McGuire, Joseph; Leckman, James F.; Scahill, Lawrence

2009-01-01

A randomized trial to examine the efficacy of anger control training for treating adolescents with Tourette's syndrome and disruptive behavior reveals that those administered with the anger control training showed a decrease in their Disruptive Behavior Rating Scale score by 52 percent as compared with a decrease of 11 percent in the treatment as…

Applying a Cognitive Neuroscience Perspective to Disruptive Behavior Disorders: Implications for Schools.

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Tyler, Patrick M; White, Stuart F; Thompson, Ronald W; Blair, R J R

2018-02-12

A cognitive neuroscience perspective seeks to understand behavior, in this case disruptive behavior disorders (DBD), in terms of dysfunction in cognitive processes underpinned by neural processes. While this type of approach has clear implications for clinical mental health practice, it also has implications for school-based assessment and intervention with children and adolescents who have disruptive behavior and aggression. This review articulates a cognitive neuroscience account of DBD by discussing the neurocognitive dysfunction related to emotional empathy, threat sensitivity, reinforcement-based decision-making, and response inhibition. The potential implications for current and future classroom-based assessments and interventions for students with these deficits are discussed.

Ethnic differences in problem perception: Immigrant mothers in a parenting intervention to reduce disruptive child behavior.

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Leijten, Patty; Raaijmakers, Maartje A J; Orobio de Castro, Bram; Matthys, Walter

2016-01-01

Ethnic minority families in Europe are underrepresented in mental health care-a profound problem for clinicians and policymakers. One reason for their underrepresentation seems that, on average, ethnic minority families tend to perceive externalizing and internalizing child behavior as less problematic. There is concern that this difference in problem perception might limit intervention effectiveness. We tested the extent to which ethnic differences in problem perception exist when ethnic minority families engage in mental health service and whether lower levels of problem perception diminish parenting intervention effects to reduce disruptive child behavior. Our sample included 136 mothers of 3- to 8-year-olds (35% female) from the 3 largest ethnic groups in the Netherlands (43% Dutch; 35% Moroccan; 22% Turkish). Mothers reported on their child's externalizing and internalizing behavior and their perception of this behavior as problematic. They were then randomly assigned to the Incredible Years parenting intervention or a wait list control condition. We contrasted maternal reports of problem perception to teacher reports of the same children. Moroccan and Turkish mothers, compared with Dutch mothers, perceived similar levels of child behavior problems as less problematic, and as causing less impairment and burden. Teacher problem perception did not vary across children from different ethnic groups. Importantly, maternal problem perception did not affect parenting intervention effectiveness to reduce disruptive child behavior. Our findings suggest that ethnic differences in problem perception exist once families engage in treatment, but that lower levels of problem perception do not diminish treatment effects. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

Sleep disruption increases seizure susceptibility: Behavioral and EEG evaluation of an experimental model of sleep apnea.

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Hrnčić, Dragan; Grubač, Željko; Rašić-Marković, Aleksandra; Šutulović, Nikola; Šušić, Veselinka; Bjekić-Macut, Jelica; Stanojlović, Olivera

2016-03-01

Sleep disruption accompanies sleep apnea as one of its major symptoms. Obstructive sleep apnea is particularly common in patients with refractory epilepsy, but causing factors underlying this are far from being resolved. Therefore, translational studies regarding this issue are important. Our aim was to investigate the effects of sleep disruption on seizure susceptibility of rats using experimental model of lindane-induced refractory seizures. Sleep disruption in male Wistar rats with implanted EEG electrodes was achieved by treadmill method (belt speed set on 0.02 m/s for working and 0.00 m/s for stop mode, respectively). Animals were assigned to experimental conditions lasting 6h: 1) sleep disruption (sleep interrupted, SI; 30s working and 90 s stop mode every 2 min; 180 cycles in total); 2) activity control (AC, 10 min working and 30 min stop mode, 9 cycles in total); 3) treadmill chamber control (TC, only stop mode). Afterwards, the animals were intraperitoneally treated with lindane (L, 4 mg/kg, SI+L, AC+L and TC+L groups) or dimethylsulfoxide (DMSO, SIc, ACc and TCc groups). Convulsive behavior was assessed by seizure incidence, latency time to first seizure, and its severity during 30 min after drug administration. Number and duration of ictal periods were determined in recorded EEGs. Incidence and severity of lindane-induced seizures were significantly increased, latency time significantly decreased in animals undergoing sleep disruption (SI+L group) compared with the animals from TC+L. Seizure latency was also significantly decreased in SI+L compared to AC+L groups. Number of ictal periods were increased and duration of it presented tendency to increase in SI+L comparing to AC+L. No convulsive signs were observed in TCc, ACc and SIc groups, as well as no ictal periods in EEG. These results indicate sleep disruption facilitates induction of epileptic activity in rodent model of lindane-epilepsy enabling translational research of this phenomenon. Copyright �

Combined pharmacotherapy-multimodal psychotherapy in children with Disruptive Behavior Disorders.

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Masi, Gabriele; Milone, Annarita; Manfredi, Azzurra; Brovedani, Paola; Pisano, Simone; Muratori, Pietro

2016-04-30

Although multi-component psychotherapeutic interventions are first-line treatments for Disruptive Behavior Disorders (DBD), pharmacotherapy is often associated for more severe patients. Our aim was to explore effectiveness of an associated pharmacotherapy in referred children with DBD receiving a one-year psychotherapeutic intervention. Aggression, callous unemotional (CU) traits and emotional dysregulation were outcome measures. The sample included 144 children, aged 8-12 years, 41 (29%) with an ADHD comorbidity. Fifty-five (38%) patients received an additional pharmacotherapy with one medication, methylphenidate, a second generation antipsychotic, or a mood stabilizer. Data were collected before and after the one-year treatment. According to the Child Behavior Checklist (CBCL), aggressive behaviors, rule-breaking behaviors and emotional dysregulation improved in the whole group, as well as parent- and child-reported CU traits. The hierarchical regression model showed that additional pharmacotherapy significantly predicted lower scores at the CBCL aggressive behaviors and emotional dysregulation, but not CU traits at the end of the treatment. The interaction between methylphenidate and ADHD comorbidity predicted lower aggressive behaviors after the treatment. In summary, this naturalistic investigation suggest that an additional pharmacotherapy significantly improved aggression and emotional dysregulation, but not CU traits. When ADHD was comorbid, methylphenidate was more effective than antipsychotics or mood stabilizers in reducing aggression. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

Disruption of male reproductive behavior in threespine stickleback asterosteus aculeatus exposed to 17β-estradiol

International Nuclear Information System (INIS)

Wibe, Asa Espmark; Rosenqvist, Gunilla; Jenssen, Bjoern Munro

2002-01-01

In past years we have witnessed decreased reproductive capacity in many wildlife species due to exposure to chemicals with endocrine-disrupting properties. In this laboratory experiment male three spine sticklebacks asterosteus aculeatus exposed to 17β-estradiol (2.0 μg/g) dispersed in peanut oil, on days 1, 7, 14, and 21, showed impaired paternal care compared to control fish that were exposed to peanut oil only. There were no differences between the two groups in number of males that built nests or in courtship displays. However, exposed males started nest building significantly later than control males. This study suggests that some but not all essential traits of male reproductive behavior may be altered as a result of exposure to 17β-estradiol. To reveal harmful effects of chemicals with suggested reproductive-disrupting properties it is thus important to take a wide variety of variables related to reproductive behavior into consideration

Growth and change in attention problems, disruptive behavior, and achievement from kindergarten to fifth grade.

Science.gov (United States)

Claessens, Amy; Dowsett, Chantelle

2014-12-01

Despite widespread interest in children's adjustment problems, existing research does not provide conclusive evidence regarding the direction of the associations of achievement with classroom attention problems and disruptive behavior over the course of elementary school. Using a nationally representative sample of 16,260 kindergarteners, this study examined the temporal sequence of achievement, classroom attention problems, and disruptive behavior, focusing on how changes in skills and problems unfold across key periods between kindergarten and fifth grade. Results indicate that improvements in attention during the earliest years of schooling predict achievement gains through third grade. However, changes in disruptive behavior do not predict subsequent changes in achievement. Evidence linking changes in achievement to changes in classroom attention problems and disruptive behavior was less consistent. These findings point to the need to develop and examine early interventions that can improve attention skills as a mechanism for improving children's academic trajectories in elementary school. © The Author(s) 2014.

Aflatoxin B1-contaminated diet disrupts the blood-brain barrier and affects fish behavior: Involvement of neurotransmitters in brain synaptosomes.

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Baldissera, Matheus D; Souza, Carine F; Zeppenfeld, Carla Cristina; Descovi, Sharine N; Moreira, Karen Luise S; da Rocha, Maria Izabel U M; da Veiga, Marcelo L; da Silva, Aleksandro S; Baldisserotto, Bernardo

2018-04-04

It is known that the cytotoxic effects of aflatoxin B 1 (AFB 1 ) in endothelial cells of the blood-brain barrier (BBB) are associated with behavioral dysfunction. However, the effects of a diet contaminated with AFB 1 on the behavior of silver catfish remain unknown. Thus, the aim of this study was to evaluate whether an AFB 1 -contaminated diet (1177 ppb kg feed -1 ) impaired silver catfish behavior, as well as whether disruption of the BBB and alteration of neurotransmitters in brain synaptosomes are involved. Fish fed a diet contaminated with AFB 1 presented a behavioral impairment linked with hyperlocomotion on days 14 and 21 compared with the control group (basal diet). Neurotransmitter levels were also affected on days 14 and 21. The permeability of the BBB to Evans blue dye increased in the intoxicated animals compared with the control group, which suggests that the BBB was disrupted. Moreover, acetylcholinesterase (AChE) activity in brain synaptosomes was increased in fish fed a diet contaminated with AFB 1 , while activity of the sodium-potassium pump (Na + , K + -ATPase) was decreased. Based on this evidence, the present study shows that silver catfish fed a diet containing AFB 1 exhibit behavioral impairments related to hyperlocomotion. This diet caused a disruption of the BBB and brain lesions, which may contribute to the behavioral changes. Also, the alterations in the activities of AChE and Na + , K + -ATPase in brain synaptosomes may directly contribute to this behavior, since they may promote synapse dysfunction. In addition, the hyperlocomotion may be considered an important macroscopic marker indicating possible AFB 1 intoxication. Copyright © 2018 Elsevier B.V. All rights reserved.

The Neurodevelopmental Basis of Early Childhood Disruptive Behavior: Irritable and Callous Phenotypes as Exemplars.

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Wakschlag, Lauren S; Perlman, Susan B; Blair, R James; Leibenluft, Ellen; Briggs-Gowan, Margaret J; Pine, Daniel S

2018-02-01

The arrival of the Journal's 175th anniversary occurs at a time of recent advances in research, providing an ideal opportunity to present a neurodevelopmental roadmap for understanding, preventing, and treating psychiatric disorders. Such a roadmap is particularly relevant for early-childhood-onset neurodevelopmental conditions, which emerge when experience-dependent neuroplasticity is at its peak. Employing a novel developmental specification approach, this review places recent neurodevelopmental research on early childhood disruptive behavior within the historical context of the Journal. The authors highlight irritability and callous behavior as two core exemplars of early disruptive behavior. Both phenotypes can be reliably differentiated from normative variation as early as the first years of life. Both link to discrete pathophysiology: irritability with disruptions in prefrontal regulation of emotion, and callous behavior with abnormal fear processing. Each phenotype also possesses clinical and predictive utility. Based on a nomologic net of evidence, the authors conclude that early disruptive behavior is neurodevelopmental in nature and should be reclassified as an early-childhood-onset neurodevelopmental condition in DSM-5. Rapid translation from neurodevelopmental discovery to clinical application has transformative potential for psychiatric approaches of the millennium. [AJP at 175: Remembering Our Past As We Envision Our Future November 1938: Electroencephalographic Analyses of Behavior Problem Children Herbert Jasper and colleagues found that brain abnormalities revealed by EEG are a potential causal factor in childhood behavioral disorders. (Am J Psychiatry 1938; 95:641-658 )].

Multiple Family Groups for Child Behavior Difficulties: Retention Among Child Welfare-Involved Caregivers

Science.gov (United States)

Gopalan, Geetha; Fuss, Ashley; Wisdom, Jennifer P.

2015-01-01

Purpose: The Multiple Family Group (MFG) service delivery model to reduce childhood disruptive behavior disorders has shown promise in engaging child welfare-involved families. This qualitative study examines caregivers' perceptions of factors that influence retention in MFGs among child welfare-involved families. Methods: Twenty-five…

Examining the Associations Among Home-School Dissonance, Amotivation, and Classroom Disruptive Behavior for Urban High School Students.

Science.gov (United States)

Brown-Wright, Lynda; Tyler, Kenneth M; Graves, Scott L; Thomas, Deneia; Stevens-Watkins, Danelle; Mulder, Shambra

2013-01-01

The current study examined the association among home-school dissonance, amotivation, and classroom disruptive behavior among 309 high school juniors and seniors at two urban high schools in the Southern region of the country. Students completed two subscales of the Patterns of Learning Activities Scales (PALS) and one subscale of the Academic Motivation Scale (AMS). ANCOVA analyses revealed significant differences in classroom disruptive behaviors for the gender independent variable. Controlling for gender in the multiple hierarchical regression analyses, it was revealed that home-school dissonance significantly predicted both amotivation and classroom disruptive behavior. In addition, a Sobel mediation analysis showed that amotivation was a significant mediator of the association between home-school dissonance and classroom disruptive behavior. Findings and limitations are discussed.

Examining the Associations Among Home–School Dissonance, Amotivation, and Classroom Disruptive Behavior for Urban High School Students

Science.gov (United States)

Brown-Wright, Lynda; Tyler, Kenneth M.; Graves, Scott L.; Thomas, Deneia; Stevens-Watkins, Danelle; Mulder, Shambra

2015-01-01

The current study examined the association among home–school dissonance, amotivation, and classroom disruptive behavior among 309 high school juniors and seniors at two urban high schools in the Southern region of the country. Students completed two subscales of the Patterns of Learning Activities Scales (PALS) and one subscale of the Academic Motivation Scale (AMS). ANCOVA analyses revealed significant differences in classroom disruptive behaviors for the gender independent variable. Controlling for gender in the multiple hierarchical regression analyses, it was revealed that home–school dissonance significantly predicted both amotivation and classroom disruptive behavior. In addition, a Sobel mediation analysis showed that amotivation was a significant mediator of the association between home–school dissonance and classroom disruptive behavior. Findings and limitations are discussed. PMID:27081213

Managing Disruptive Physician Behavior: First Steps for Designing an Effective Online Resource

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Derek Puddester

2011-03-01

Full Text Available Interviews with physician leaders from hospitals in a mid-sized Ontario City were conducted to determine their needs with regard to managing disruptive physician behaviour. These findings were used to inform the design of a two-day skill-development workshop for physician leaders on disruptive behaviour. The workshop was evaluated using a modified version of the Learner Experience Feedback Form, which was built to align with W(eLearn, http://www.ennovativesolution.com/WeLearn/ a framework developed to guide the design, delivery, development, and evaluation of online interprofessional courses and programs (MacDonald, Stodel, Thompson, & Casimiro, 2009. The surveys gathered information related to the content, media, service, structure, and outcomes of the workshop. The findings from the focus group interviews and workshop evaluation identify physician leaders’ needs with regard to disruptive behavior and were used to inform the design of the world’s first Online Physician Health and Wellness Resource http://www.ephysicianhealth.com/ an open access learning resources currently being used globally, in 91 countries. The resource was the recipient of the winner of the International Business/Professional 2010 International eLearning Award. The findings demonstrated the importance of conducting a needs analysis and using a framework to guide the design, delivery and evaluation of effective online healthcare education.

Investigating the Association between Home-School Dissonance and Disruptive Classroom Behaviors for Urban Middle School Students

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Tyler, Kenneth M.; Burris, Jennifer L.; Coleman, Sean T.

2018-01-01

Disruptive classroom behaviors are a major schooling dilemma in urban schools. While several contextual and motivational factors have been statistically associated with disruptive classroom behaviors, one overlooked factor has been home-school dissonance. The current study examined the relationship between 260 middle school students' reports of…

Disrupting Mating Behavior of Diaphorina citri (Liviidae).

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Lujo, S; Hartman, E; Norton, K; Pregmon, E A; Rohde, B B; Mankin, R W

2016-12-01

Severe economic damage from citrus greening disease, caused by 'Candidatus Liberibacter asiaticus' bacteria, has stimulated development of methods to reduce mating and reproduction in populations of its insect vector, Diaphorina citri (Hemiptera: Liviidae). Male D. citri find mating partners by walking on host plants, intermittently producing vibrational calls that stimulate duetting replies by receptive females. The replies provide orientational feedback, assisting the search process. To test a hypothesis that D. citri mating can be disrupted using vibrational signals that compete with and/or mask female replies, courtship bioassays were conducted in citrus trees with or without interference from female reply mimics produced by a vibrating buzzer. Statistically significant reductions occurred in the rates and proportions of mating when the buzzer produced reply mimics within 0.4 s after male courtship calls compared with undisturbed controls. Observations of courtship behaviors in the two bioassays revealed activity patterns that likely contributed to the reductions. In both disruption and control tests, males reciprocated frequently between structural bifurcations and other transition points where signal amplitudes changed. Males in the disruption bioassay had to select among vibrational signals combined from the buzzer and the female at each transition point. They often turned towards the buzzer instead of the female. There was a statistically significant reduction in the proportion of males mating if they contacted the buzzer, possibly due to its higher vibration amplitude and duration in comparison with female replies. Potential applications of D. citri mating disruption technology in citrus groves are discussed. Published by Oxford University Press on behalf of Entomological Society of America 2016. This work is written by US Government employees and is in the public domain in the US.

Lasting Adaptations in Social Behavior Produced by Social Disruption and Inhibition of Adult Neurogenesis

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Opendak, Maya; Offit, Lily; Monari, Patrick; Schoenfeld, Timothy J.; Sonti, Anup N.; Cameron, Heather A.

2016-01-01

Research on social instability has focused on its detrimental consequences, but most people are resilient and respond by invoking various coping strategies. To investigate cellular processes underlying such strategies, a dominance hierarchy of rats was formed and then destabilized. Regardless of social position, rats from disrupted hierarchies had fewer new neurons in the hippocampus compared with rats from control cages and those from stable hierarchies. Social disruption produced a preference for familiar over novel conspecifics, a change that did not involve global memory impairments or increased anxiety. Using the neuropeptide oxytocin as a tool to increase neurogenesis in the hippocampus of disrupted rats restored preference for novel conspecifics to predisruption levels. Conversely, reducing the number of new neurons by limited inhibition of adult neurogenesis in naive transgenic GFAP–thymidine kinase rats resulted in social behavior similar to disrupted rats. Together, these results provide novel mechanistic evidence that social disruption shapes behavior in a potentially adaptive way, possibly by reducing adult neurogenesis in the hippocampus. SIGNIFICANCE STATEMENT To investigate cellular processes underlying adaptation to social instability, a dominance hierarchy of rats was formed and then destabilized. Regardless of social position, rats from disrupted hierarchies had fewer new neurons in the hippocampus compared with rats from control cages and those from stable hierarchies. Unexpectedly, these changes were accompanied by changes in social strategies without evidence of impairments in cognition or anxiety regulation. Restoring adult neurogenesis in disrupted rats using oxytocin and conditionally suppressing the production of new neurons in socially naive GFAP–thymidine kinase rats showed that loss of 6-week-old neurons may be responsible for adaptive changes in social behavior. PMID:27358459

Heavy Metal in Children's Tooth Enamel: Related to Autism and Disruptive Behaviors?

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Abdullah, Maryam M.; Ly, Agnes R.; Goldberg, Wendy A.; Clarke-Stewart, K. Alison; Dudgeon, John V.; Mull, Christopher G.; Chan, Tony J.; Kent, Erin E.; Mason, Andrew Z.; Ericson, Jonathon E.

2012-01-01

To examine possible links between neurotoxicant exposure and neuropsychological disorders and child behavior, relative concentrations of lead, mercury, and manganese were examined in prenatal and postnatal enamel regions of deciduous teeth from children with Autism Spectrum Disorders (ASDs), high levels of disruptive behavior (HDB), and typically…

The role of friends' disruptive behavior in the development of children's tobacco experimentation: results from a preventive

NARCIS (Netherlands)

van Lier, P.A.C.; Huizink, A.C.; Vuijk, P.J.

2011-01-01

Having friends who engage in disruptive behavior in childhood may be a risk factor for childhood tobacco experimentation. This study tested the role of friends' disruptive behavior as a mediator of the effects of a classroom based intervention on children's tobacco experimentation. 433 Children (52%

Disruptive colouration and perceptual grouping.

Science.gov (United States)

Espinosa, Irene; Cuthill, Innes C

2014-01-01

Camouflage is the primary defence of many animals and includes multiple strategies that interfere with figure-ground segmentation and object recognition. While matching background colours and textures is widespread and conceptually straightforward, less well explored are the optical 'tricks', collectively called disruptive colouration, that exploit perceptual grouping mechanisms. Adjacent high contrast colours create false edges, but this is not sufficient for an object's shape to be broken up; some colours must blend with the background. We test the novel hypothesis that this will be particularly effective when the colour patches on the animal appear to belong to, not merely different background colours, but different background objects. We used computer-based experiments where human participants had to find cryptic targets on artificial backgrounds. Creating what appeared to be bi-coloured foreground objects on bi-coloured backgrounds, we generated colour boundaries that had identical local contrast but either lay within or between (illusory) objects. As predicted, error rates for targets matching what appeared to be different background objects were higher than for targets which had otherwise identical local contrast to the background but appeared to belong to single background objects. This provides evidence for disruptive colouration interfering with higher-level feature integration in addition to previously demonstrated low-level effects involving contour detection. In addition, detection was impeded in treatments where targets were on or in close proximity to multiple background colour or tone boundaries. This is consistent with other studies which show a deleterious influence of visual 'clutter' or background complexity on search.

Disruptive colouration and perceptual grouping.

Directory of Open Access Journals (Sweden)

Irene Espinosa

Full Text Available Camouflage is the primary defence of many animals and includes multiple strategies that interfere with figure-ground segmentation and object recognition. While matching background colours and textures is widespread and conceptually straightforward, less well explored are the optical 'tricks', collectively called disruptive colouration, that exploit perceptual grouping mechanisms. Adjacent high contrast colours create false edges, but this is not sufficient for an object's shape to be broken up; some colours must blend with the background. We test the novel hypothesis that this will be particularly effective when the colour patches on the animal appear to belong to, not merely different background colours, but different background objects. We used computer-based experiments where human participants had to find cryptic targets on artificial backgrounds. Creating what appeared to be bi-coloured foreground objects on bi-coloured backgrounds, we generated colour boundaries that had identical local contrast but either lay within or between (illusory objects. As predicted, error rates for targets matching what appeared to be different background objects were higher than for targets which had otherwise identical local contrast to the background but appeared to belong to single background objects. This provides evidence for disruptive colouration interfering with higher-level feature integration in addition to previously demonstrated low-level effects involving contour detection. In addition, detection was impeded in treatments where targets were on or in close proximity to multiple background colour or tone boundaries. This is consistent with other studies which show a deleterious influence of visual 'clutter' or background complexity on search.

Changes in Adult Behavior to Decrease Disruption from Students in Nonclassroom Settings

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Bohanon, Hank

2015-01-01

Decreasing classroom disruptions that result from hallway-related behavior in high school settings can be very challenging for high school staff. This article presents a case example of preventing problem behavior related to hallway settings in a high school with over 1,200 students. The interventions are described, and the results of the plan are…

Disruptive behaviors in the classroom: initial standardization data on a new teacher rating scale.

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Burns, G L; Owen, S M

1990-10-01

This study presents initial standardization data on the Sutter-Eyberg Student Behavior Inventory (SESBI), a teacher-completed measure of disruptive classroom behaviors. SESBIs were completed on 1116 children in kingergarten through fifth grade in a rural eastern Washington school district. Various analyses (Cronbach's alpha, corrected item-total correlations, average interitem correlations, principal components analyses) indicated that the SESBI provides a homogeneous measure of disruptive behaviors. Support was also found for three factors within the scale (e.g., overt aggression, oppositional behavior, and attentional difficulties). While the child's age did not have a significant effect on the SESBI, the child's gender did have a significant effect on scale scores as well as on most of the items, with males being rated more problematic than females. The SESBI was also able to discriminate between children in treatment for behavioral problems or learning disabilities and children not in treatment.

The Aquarius comoving group is not a disrupted classical globular cluster★

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Casey, A. R.; Keller, S. C.; Alves-Brito, A.; Frebel, A.; Da Costa, G.; Karakas, A.; Yong, D.; Schlaufman, K. C.; Jacobson, H. R.; Yu, Q.; Fishlock, C.

2014-09-01

We present a detailed analysis of high-resolution, high signal-to-noise ratio spectra for five Aquarius stream stars observed with the Magellan Inamori Kyocera Echelle spectrograph on the Magellan Clay telescope. Our sample represents one-third of the 15 known members in the stream. We find the stream is not monometallic: the metallicity ranges from [Fe/H] = -0.63 to -1.58. No anticorrelation in Na-O abundances is present, and we find a strong positive Mg-Al relationship, similar to that observed in the thick disc. We find no evidence that the stream is a result of a disrupted classical globular cluster, contrary to a previously published claim. High [(Na, Ni, α)/Fe] and low [Ba/Y] abundance ratios in the stream suggest that it is not a tidal tail from a disrupted dwarf galaxy, either. The stream is chemically indistinguishable from Milky Way field stars with the exception of one candidate, C222531-145437. From its position, velocity, and detailed chemical abundances, C222531-145437 is likely a star that was tidally disrupted from ω-Centauri. We propose that the Aquarius stream is Galactic in origin, and could be the result of a disc-satellite perturbation in the Milky Way thick disc of the order of a few Gyr ago: derived orbits, UVW velocities, and angular momenta of the Aquarius members offer qualitative support for our hypothesis. Assuming that C222531-145437 is a tidally disrupted member of ω-Centauri, this system is the most likely disc perturber. In the absence of compelling chemical and/or dynamical evidence that the Aquarius stream is the tidal tail of a disrupted satellite, we advocate the `Aquarius group' as a more appropriate description. Like the Canis Major overdensity, as well as the Hercules and Monoceros groups, the Aquarius group joins the list of kinematically identified substructures that are not actually accreted material: they are simply part of the rich complexity of the Milky Way structure.

The Token Economy: Reducing the Disruptive and Off-Task Behavior

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Chevalier, Nicole Taylor

2012-01-01

This study investigates the effects of a token economy as an intervention to reduce disruptive and off-task behavior of third grade students in an open concept setting. The intervention combines the use of a token reinforcement with a raffle style drawing. The students receive tokens on an intermittent reinforcement schedule for being on-task,…

The Effects of the CW-FIT Group Contingency on Class-Wide and Individual Behavior in an Urban First Grade Classroom

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Naylor, Anna Schmidt; Kamps, Debra; Wills, Howard

2018-01-01

The current study examined the effects of the Class-wide Function-related Intervention Teams (CW-FIT), a class-wide group contingency, on the on-task behavior of all students in a first grade class and the on-task and disruptive behavior of three target students within that class who were nominated by their teacher through a behavioral screening.…

Multiple Family Group Service Model for Children With Disruptive Behavior Disorders: Child Outcomes at Post-Treatment.

Science.gov (United States)

Chacko, Anil; Gopalan, Geetha; Franco, Lydia; Dean-Assael, Kara; Jackson, Jerrold; Marcus, Sue; Hoagwood, Kimberly; McKay, Mary

2015-06-01

The purpose of this study was to determine the benefits of a multiple family group (MFG) service delivery model compared with services as usual (SAU) in improving the functioning of youth with oppositional defiant/conduct disorder in families residing in socioeconomically disadvantaged communities. Participants included 320 youth aged 7 to 11 and their families who were referred to participating outpatient clinics. Participants were assigned to the MFG or the SAU condition, with parent report of child oppositional behavior, social competence, and level of youth impairment as primary outcomes at post-treatment. Family engagement to MFG was measured by attendance to each group session. Caregivers of youth in the MFG service delivery model condition reported significant improvement in youth oppositional behavior and social competence compared with youth in the SAU condition. Impairment improved over time for both groups with no difference between treatment conditions. The MFG led to greater percentage of youth with clinically significant improvements in oppositional behavior. Attendance to the MFG was high, given the high-risk nature of the study population. The MFG service delivery model offers an efficient and engaging format to implement evidence-based approaches to improving functioning of youth with oppositional defiant and/or conduct disorder in families from socioeconomically disadvantaged communities.

A Packaged Intervention To Reduce Disruptive Behaviors in General Education Students.

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De Martini-Scully, Diane; Bray, Melissa A.; Kehle, Thomas J.

2000-01-01

Examines the effects of a packaged intervention designed to reduce disruptive behaviors in two 8-year-old female students. The intervention was delivered through a contingency contract and was comprised of precision requests, antecedent strategies, and the reductive technique of response costs. The intervention resulted in reduction of disruptive…

Interactions between Maternal Parenting and Children's Early Disruptive Behavior: Bidirectional Associations across the Transition from Preschool to School Entry

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Combs-Ronto, Lindsey A.; Olson, Sheryl L.; Lunkenheimer, Erika S.; Sameroff, Arnold J.

2009-01-01

This study was a prospective 2-year longitudinal investigation of associations between negative maternal parenting and disruptive child behavior across the preschool to school transition. Our main goals were to 1) determine the direction of association between early maternal negativity and child disruptive behaviors across this important…

The Association Between Student Reports of Classmates’ Disruptive Behavior and Student Achievement

Directory of Open Access Journals (Sweden)

Carmel Blank

2016-06-01

Full Text Available Classroom disciplinary climate and its correlation to students’ performance is a widely debated issue. Policy reports tend to assume that classroom disruptions interfere with the learning experience. Empirical evidence for this assumption, however, which carefully distinguishes classroom climate from the school climate in general, is still wanting. This study examines the relation between student reports regarding disciplinary infractions to student achievement, with a special focus on classroom disruptions. Multilevel regressions were used to estimate the contribution of classroom and school disciplinary infractions on eighth-grade students’ test scores. Reports of disruptive behavior proved to correlate negatively with test scores, whereas the effect of other school and classroom characteristics, including teachers’ attitudes and school disciplinary policy, were insignificant (controlling for students’ prior achievements. We conclude that a disruptive classroom climate can hinder the learning process and lower the achievement of the entire class, regardless of the conduct of any particular student. Therefore, a special focus on disruptions in the classroom, in contradistinction with school disciplinary climate in general—which is lacking in most studies—emerges as instrumental to the understanding of how school climate relates to student achievement.

The Appalachian Perspective: An Adaptation to a Parent Training Program for Disruptive Behavior Disorders

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Newland, Jessica Marie

2010-01-01

Disruptive behavior disorders in children are distressing to others due to the abnormal nature of the child's behavior (Christophersen & Mortweet, 2003). These disorders include attention-deficit/hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), and conduct disorder (CD). Prevalent rates for these disorders range from 2% to…

Examining the Associations Among Home–School Dissonance, Amotivation, and Classroom Disruptive Behavior for Urban High School Students

OpenAIRE

Brown-Wright, Lynda; Tyler, Kenneth M.; Graves, Scott L.; Thomas, Deneia; Stevens-Watkins, Danelle; Mulder, Shambra

2011-01-01

The current study examined the association among home–school dissonance, amotivation, and classroom disruptive behavior among 309 high school juniors and seniors at two urban high schools in the Southern region of the country. Students completed two subscales of the Patterns of Learning Activities Scales (PALS) and one subscale of the Academic Motivation Scale (AMS). ANCOVA analyses revealed significant differences in classroom disruptive behaviors for the gender independent variable. Control...

Prevalence of Disruptive Behavior Disorders in Elementary-School Students of Khorramabad

Directory of Open Access Journals (Sweden)

parisa Namdari

2007-10-01

Full Text Available Namdari P1, Nazari H2 1. Instructor, Department of Social Medicine, Faculty of Medicine, Lorestan University of Medical Sciences 2. Assistant Professor, Department of Psychiatry, Faculty of Medicine, Lorestan University of Medical Sciences, Iran Abstract Background: Disruptive Behavior Disorder (DBD is one of the most prevalent psychiatric disorders starting from childhood and is considered an important mental health problem of the society. DBDs may have distractive effects on the social, educational, personality, and behavioral relationships of people in their childhood and adulthood. The present research was done to determine the prevalence of Disruptive Behavior Disorders in elementary school students of Khorramabad in 2005. Materials and methods: This research was a cross-sectional study. Its statistical community includes all the students studying in grades one to five at elementary schools in Khorramabad (N = 943. Sixteen state and private schools (8 for girls and 8 for boys were selected in a cluster and multi–stage sampling method. The standardized questionnaire of Child Symptoms Inventories (CSI-4 was used to collect data on the prevalence of children’s psychiatric disorders. The results ware analyzed using descriptive statistic and Chi-square test. Results: The total sample included 943 children. There was 21.4% DBD behavior (17.7% oppositional defiant disorder and, 3.7% conduct disorder. The number of the boys was twice as that of the girls (28.7% vs. 14.4%. The students in grade 2 showed the lowest, and those in grade 3, 4 and 5 the highest prevalence rate of DBD. There was also a significant relationship between children’s grade (P= 0.02, parent’s education (P=0.005, P=0.006, Mother’s job (P= 0.03, income (P = 0.005 and DBD. However no significant relationship between father’s job, educational level of the students and parent’s mental problems and Disruptive Behavior Disorders was found. Conclusion: Due to the high

Attention deficit hyperactivity disorder and other disruptive behavior disorders are risk factors for recurrent epistaxis in children: A prospective case-controlled study.

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Özgür, Erdoğan; Aksu, Hatice; Gürbüz-Özgür, Börte; Başak, Hatice Sema; Eskiizmir, Görkem

2016-01-01

The aim of this study was to investigate the frequency of attention deficit hyperactivity disorder (ADHD) and other disruptive behavior disorders in children with recurrent epistaxis (RE). Children aged between 6-11 years were enrolled according to presence (n=34) and absence (n=103) of RE. Turgay DSM-IV-Based Child and Adolescent Disruptive Behavior Disorders Screening and Rating Scale was applied to parents. Moreover, Schedule for Affective Disorders and Schizophrenia for School-Age Children Present and Lifetime Version was performed. Oppositional defiant disorder (ODD) and ADHD were determined in 17.6% and 32.4% of patients, respectively. When psychiatric diagnoses between both groups were compared, statistically significant differences were found in terms of ADHD and ODD (p=0.028 and p=0.003). In children with RE, the frequency of ADHD and ODD are higher than children without RE. A referral to a child psychiatrist should be considered, if a child with RE also has symptoms of increased activity, inattention and/or body-injurious behaviors.

Risky Decision Making in Substance Dependent Adolescents with a Disruptive Behavior Disorder

NARCIS (Netherlands)

Schutter, D.J.L.G.; Bokhoven, I. van; Vanderschuren, L.J.M.J.; Lochman, J.E.; Matthys, W.C.H.J.

2011-01-01

Of all psychiatric disorders, the disruptive behavior disorders (DBDs) are the most likely to predispose to substance dependence (SD). One possible underlying mechanism for this increased vulnerability is risky decision making. The aim of this study was to examine decision making in DBD adolescents

Is My Teaching Disturbing You? Strategies for Addressing Disruptive Behaviors in the College Classroom

Science.gov (United States)

Murphy, Kelle

2010-01-01

Faculty in higher education are experiencing a new generation of college students referred to as Generation X (Gen-Xers) and Millennials. The characteristics and behaviors of Gen-Xers and Millennials have created a more challenging classroom learning environment. Some educators may choose to ignore disruptive behaviors or may simply not know which…

Mild myelin disruption elicits early alteration in behavior and proliferation in the subventricular zone.

Science.gov (United States)

Gould, Elizabeth A; Busquet, Nicolas; Shepherd, Douglas; Dietz, Robert M; Herson, Paco S; Simoes de Souza, Fabio M; Li, Anan; George, Nicholas M; Restrepo, Diego; Macklin, Wendy B

2018-02-13

Myelin, the insulating sheath around axons, supports axon function. An important question is the impact of mild myelin disruption. In the absence of the myelin protein proteolipid protein (PLP1), myelin is generated but with age, axonal function/maintenance is disrupted. Axon disruption occurs in Plp1 -null mice as early as 2 months in cortical projection neurons. High-volume cellular quantification techniques revealed a region-specific increase in oligodendrocyte density in the olfactory bulb and rostral corpus callosum that increased during adulthood. A distinct proliferative response of progenitor cells was observed in the subventricular zone (SVZ), while the number and proliferation of parenchymal oligodendrocyte progenitor cells was unchanged. This SVZ proliferative response occurred prior to evidence of axonal disruption. Thus, a novel SVZ response contributes to the region-specific increase in oligodendrocytes in Plp1 -null mice. Young adult Plp1- null mice exhibited subtle but substantial behavioral alterations, indicative of an early impact of mild myelin disruption. © 2018, Gould et al.

Disrupting reconsolidation: pharmacological and behavioral manipulations

NARCIS (Netherlands)

Soeter, M.; Kindt, M.

2011-01-01

We previously demonstrated that disrupting reconsolidation by pharmacological manipulations "deleted" the emotional expression of a fear memory in humans. If we are to target reconsolidation in patients with anxiety disorders, the disruption of reconsolidation should produce content-limited

Psychoticism and disruptive behavior can be also good predictors of school achievement.

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Flores-Mendoza, Carmen; Widaman, Keith; Mansur-Alves, Marcela; Bacelar, Tatiane Dias; Saldanha, Renata

2013-01-01

The relations of Gf (Standard Progressive Matrices Raven), Gc (verbal scale of Wechsler Intelligence Scale for Children-Third Version), personality dimensions (Eysenck Personality Questionnaire-Junior Version), and disruptive behavior (TDAH scale) with school achievement (measured by TDE test and PISA test) were investigated. Two samples of students (total N = 534) representing a broad range of socioeconomic status (SES) participated in this study. Path models were conducted. The results demonstrated that (1) in both samples no sex differences related to school achievement were found; (2) in the first sample, after controlling for age and SES differences, Gf and psychoticism predicted (.38 and -.13, respectively) school achievement (measured by TDE test); (3) in the second sample, after controlling for SES differences to which additional measures were administered, Gf and Gc positively predicted (.22 and .40, respectively) school achievement (measured by PISA test). In addition, psychoticism and disruptive behavior also predicted school performance (-.14 and -.28, respectively). Some theoretical and practical implications are discussed.

Direct behavior rating as a school-based behavior screener for elementary and middle grades.

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Chafouleas, Sandra M; Kilgus, Stephen P; Jaffery, Rose; Riley-Tillman, T Chris; Welsh, Megan; Christ, Theodore J

2013-06-01

The purpose of this study was to investigate how Direct Behavior Rating Single Item Scales (DBR-SIS) involving targets of academically engaged, disruptive, and respectful behaviors function in school-based screening assessment. Participants included 831 students in kindergarten through eighth grades who attended schools in the northeastern United States. Teachers provided behavior ratings for a sample of students in their classrooms on the DBR-SIS, the Behavioral and Emotional Screening System (Kamphaus & Reynolds, 2007), and the Student Risk Screening Scale (Drummond, 1994). Given variations in rating procedures to accommodate scheduling differences across grades, analysis was conducted separately for elementary school and middle school grade levels. Results suggested that the recommended cut scores, the combination of behavior targets, and the resulting conditional probability indices varied depending on grade level grouping (lower elementary, upper elementary, middle). For example, for the lower elementary grade level grouping, a combination of disruptive behavior (cut score=2) and academically engaged behavior (cut score=8) was considered to offer the best balance among indices of diagnostic accuracy, whereas a cut score of 1 for disruptive behavior and 8 for academically engaged behavior were recommended for the upper elementary school grade level grouping and cut scores of 1 and 9, respectively, were suggested for middle school grade level grouping. Generally, DBR-SIS cut scores considered optimal for screening using single or combined targets including academically engaged behavior and disruptive behavior by offering a reasonable balance of indices for sensitivity (.51-.90), specificity (.47-.83), negative predictive power (.94-.98), and positive predictive power (.14-.41). The single target of respectful behavior performed poorly across all grade level groups, and performance of DBR-SIS targets was relatively better in the elementary school than middle

Disrupted cortical function underlies behavior dysfunction due to social isolation

Science.gov (United States)

Miyazaki, Tomoyuki; Takase, Kenkichi; Nakajima, Waki; Tada, Hirobumi; Ohya, Daisuke; Sano, Akane; Goto, Takahisa; Hirase, Hajime; Malinow, Roberto; Takahashi, Takuya

2012-01-01

Stressful events during early childhood can have a profound lifelong influence on emotional and cognitive behaviors. However, the mechanisms by which stress affects neonatal brain circuit formation are poorly understood. Here, we show that neonatal social isolation disrupts molecular, cellular, and circuit developmental processes, leading to behavioral dysfunction. Neonatal isolation prevented long-term potentiation and experience-dependent synaptic trafficking of α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptors normally occurring during circuit formation in the rodent barrel cortex. This inhibition of AMPA receptor trafficking was mediated by an increase of the stress glucocorticoid hormone and was associated with reduced calcium/calmodulin-dependent protein kinase type II (CaMKII) signaling, resulting in attenuated whisker sensitivity at the cortex. These effects led to defects in whisker-dependent behavior in juvenile animals. These results indicate that neonatal social isolation alters neuronal plasticity mechanisms and perturbs the initial establishment of a normal cortical circuit, which potentially explains the long-lasting behavioral effects of neonatal stress. PMID:22706303

Comorbid Internalizing and Disruptive Behavior Disorder in Adolescents: Offending, Trauma, and Clinical Characteristics

NARCIS (Netherlands)

Hoeve, M.; McReynolds, L.S.; Wasserman, G.A.

2015-01-01

This study examined differences between comorbid internalizing and disruptive behavior disorder (DBD), and those with either internalizing disorder or DBD. We focused on differences with regard to trauma exposure and offending characteristics in 8,431 juvenile justice youths. Self-reported,

Internet-Assisted Parent Training Intervention for Disruptive Behavior in 4-Year-Old Children: A Randomized Clinical Trial.

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Sourander, Andre; McGrath, Patrick J; Ristkari, Terja; Cunningham, Charles; Huttunen, Jukka; Lingley-Pottie, Patricia; Hinkka-Yli-Salomäki, Susanna; Kinnunen, Malin; Vuorio, Jenni; Sinokki, Atte; Fossum, Sturla; Unruh, Anita

2016-04-01

There is a large gap worldwide in the provision of evidence-based early treatment of children with disruptive behavioral problems. To determine whether an Internet-assisted intervention using whole-population screening that targets the most symptomatic 4-year-old children is effective at 6 and 12 months after the start of treatment. This 2-parallel-group randomized clinical trial was performed from October 1, 2011, through November 30, 2013, at a primary health care clinic in Southwest Finland. Data analysis was performed from August 6, 2015, to December 11, 2015. Of a screened population of 4656 children, 730 met the screening criteria indicating a high level of disruptive behavioral problems. A total of 464 parents of 4-year-old children were randomized into the Strongest Families Smart Website (SFSW) intervention group (n = 232) or an education control (EC) group (n = 232). The SFSW intervention, an 11-session Internet-assisted parent training program that included weekly telephone coaching. Child Behavior Checklist version for preschool children (CBCL/1.5-5) externalizing scale (primary outcome), other CBCL/1.5-5 scales and subscores, Parenting Scale, Inventory of Callous-Unemotional Traits, and the 21-item Depression, Anxiety, and Stress Scale. All data were analyzed by intention to treat and per protocol. The assessments were made before randomization and 6 and 12 months after randomization. Of the children randomized, 287 (61.9%) were male and 79 (17.1%) lived in other than a family with 2 biological parents. At 12-month follow-up, improvement in the SFSW intervention group was significantly greater compared with the control group on the following measures: CBCL/1.5-5 externalizing scale (effect size, 0.34; P anxiety (effect size, 0.26; P = .003), and emotional problems (effect size, 0.31; P = .001); Inventory of Callous-Unemotional Traits callousness scores (effect size, 0.19; P = .03); and self-reported parenting skills (effect size

Pavlovian conditioning enhances resistance to disruption of dogs performing an odor discrimination.

Science.gov (United States)

Hall, Nathaniel J; Smith, David W; Wynne, Clive D L

2015-05-01

Domestic dogs are used to aid in the detection of a variety of substances such as narcotics and explosives. Under real-world detection situations there are many variables that may disrupt the dog's performance. Prior research on behavioral momentum theory suggests that higher rates of reinforcement produce greater resistance to disruption, and that this is heavily influenced by the stimulus-reinforcer relationship. The present study tests the Pavlovian interpretation of resistance to change using dogs engaged in an odor discrimination task. Dogs were trained on two odor discriminations that alternated every six trials akin to a multiple schedule in which the reinforcement probability for a correct response was always 1. Dogs then received several sessions of either odor Pavlovian conditioning to the S+ of one odor discrimination (Pavlovian group) or explicitly unpaired exposure to the S+ of one odor discrimination (Unpaired group). The remaining odor discrimination pair for each dog always remained an unexposed control. Resistance to disruption was assessed under presession feeding, a food-odor disruptor condition, and extinction, with baseline sessions intervening between disruption conditions. Equivalent baseline detection rates were observed across experimental groups and odorant pairs. Under disruption conditions, Pavlovian conditioning led to enhanced resistance to disruption of detection performance compared to the unexposed control odor discrimination. Unpaired odor conditioning did not influence resistance to disruption. These results suggest that changes in Pavlovian contingencies are sufficient to influence resistance to change. © Society for the Experimental Analysis of Behavior.

Toward Improved Parenting Interventions for Disruptive Child Behavior : Engaging Disadvantaged Families and Searching for Effective Elements

NARCIS (Netherlands)

Leijten, P.H.O.

2014-01-01

Parenting interventions are a promising strategy to prevent antisocial behavior in society. Evidence accumulates that parenting interventions can reduce disruptive child behavior, and insight rapidly increases into which families they benefit most. At the same time, however, several high risk

Testing the impact of a social skill training versus waiting list control group for the reduction of disruptive behaviors and stress among preschool children in child care: the study protocol for a cluster randomized trial.

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Côté, Sylvana M; Larose, Marie-Pier; Geoffroy, Marie Claude; Laurin, Julie; Vitaro, Frank; Tremblay, Richard E; Ouellet-Morin, Isabelle

2017-08-07

Most preschoolers growing up in western industrialized countries receive child care services (CCS) during the day, while their parents are at work. Meta-analytic data suggest that CCS represent a stressful experience for preschoolers. This may be because preschoolers have not yet developed the social skills necessary to cope with the new and rapidly fluctuating social contexts of CCS. We tested the effectiveness of a child care-based social skill training program aiming to improve children's social behaviors and reduce the stress they experience. We used a cluster randomized control trial (cRCT) to compare children's social behaviors and stress levels in pre- and post-intervention according to whether they received a social skill training intervention or not. Nineteen (n = 19) public CCS (n = 362, 3-years-old preschoolers) of underprivileged neighborhoods (Montreal, Canada) were randomized to one of two conditions: 1) social skills training (n = 10 CCS); or 2) waiting list control group (n = 9 CCS). Educators in the intervention group conducted bi-weekly social skills training sessions over a period of 8 months. The intervention covered four topics: making social contacts, problem solving, emotional self-regulation, as well as emotional expression and recognition. Main outcome measures included preschoolers' disruptive (e.g. aggression, opposition, conflicts) and prosocial behaviors (e.g. sharing toys, helping another child), and stress levels assessed by salivary cortisol sampling at pre and post intervention assessments. Educators' practices will be tested as potential mediators of the expected changes in behaviors and neuroendocrine stress. To our knowledge, this is the first cRCT to test the effectiveness of a child care based social skill training program on the reduction of disruptive behaviors and levels of stress. Significant challenges include the degree of adherence to the intervention protocol as well educators and preschoolers' turnover

Empathy Problems in Youth with Disruptive Behavior Disorders, with and without CU Traits

NARCIS (Netherlands)

Pijper, J.|info:eu-repo/dai/nl/369283414; de Wied, M.A.|info:eu-repo/dai/nl/089238672; van Goozen, S.; Meeus, W.H.J.|info:eu-repo/dai/nl/070442215

2017-01-01

This chapter first examines the nature of empathy problems in clinically referred disruptive behavior disorders (DBD) youth with callous unemotional (CU) traits. It then examines whether a lack of empathy contributes to a differentiation between DBD subtypes. The chapter also explores whether the

Reciprocal relationships between parenting behavior and disruptive psychopathology from childhood through adolescence.

Science.gov (United States)

Burke, Jeffrey D; Pardini, Dustin A; Loeber, Rolf

2008-07-01

Theoretical models suggest that child behaviors influence parenting behaviors, and specifically that unpleasant child behaviors coerce parents to discontinue engaging in appropriate discipline. This study examined reciprocal relationships between parenting behaviors (supervision, communication, involvement, timid discipline and harsh punishment) and child disruptive disorder symptoms (ADHD, ODD and CD) in a clinic-referred sample of 177 boys. Annual measures, including structured clinical interviews, were obtained from the beginning of the study (when boys were between the ages of 7 to 12) to age 17. Specific reciprocal influence was observed; only timid discipline predicted worsening behavior, namely ODD symptoms, and ODD symptoms predicted increases in timid discipline. Greater influence from child behaviors to parenting practices was found: ODD also predicted poorer communication and decreased involvement, and CD predicted poorer supervision. ADHD was neither predictive of, nor predicted by, parenting behaviors. The results are specifically supportive of a coercive process between child behaviors and parenting behaviors, and generally suggestive of greater influence of child behaviors on parenting behaviors than of parenting behaviors on child behaviors.

Guanfacine Use in Children With Down Syndrome and Comorbid Attention-Deficit Hyperactivity Disorder (ADHD) With Disruptive Behaviors.

Science.gov (United States)

Capone, George T; Brecher, Liza; Bay, Mihee

2016-07-01

The purpose of this study was to characterize children with Down syndrome and attention-deficit hyperactivity disorder (ADHD) with disruptive behaviors using the Aberrant Behavior Checklist (ABC), and to measure the treatment effects of guanfacine on maladaptive behaviors. Subjects were enrolled from a group of outpatients who visited our clinic between 2002 and 2007. Subjects (N = 23) were children with Down syndrome ages 4 to 12 years (mean 7.4 ± 4.1), who met criteria for ADHD according to the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition The Aberrant Behavior Checklist Irritability and Hyperactivity subscales each showed a significant decrease (P Hyperactivity was 25% (-7.8 points), and for Irritability, 25% (-3.5 points). The mean composite score also declined by 24% (-12 points). Effect size differences on Irritability were moderate, whereas differences on Hyperactivity and composite score appeared large. Clinically important target behaviors were reduced. Medication was generally well tolerated and the incidence of treatment emergent side effects remained low. © The Author(s) 2016.

Perceptual Grouping of Closed Contours Is Disrupted by the Interpretation of the Scene Layout.

Science.gov (United States)

Zhang, Junjun; Wan, Chaoyang; Jin, Zhenlan; Li, Ling

2017-01-01

Closure is one of the grouping principles in perceptual organization. Studies have shown that closure can be affected by several factors, specifically by low-level image features. However, the effects of high-level non-image factors on grouping by closure are unknown. In two experiments we investigated how closure is affected when depth information is introduced to the 2D closed contours, whilst the other 2D features remain intact. The first experiment showed that the grouping of closed contours was disrupted by the manipulation in 3D layout. The second experiment showed that thus disruption resulted in the impairment of searching efficiency. These findings suggest that closure is not only determined by the image features, but also affected by the interpretation of the contextual scene layout.

A Program to Reduce Disruptive Behavior in a School Based Upon a Practical Application of the Adlerian Theory of Psychology.

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Crawford, Carl G.

This practicum report describes a program to aid in reducing the incidence of disruptive behavior of students through the use of the Adlerian Theory of Psychology. The report contains a general definition of the problem, which was the reduction of the disruptive student behavior, and the objectives to be achieved from the program. There is a…

Scatter Plot Analysis of Excessive Daytime Sleepiness and Severe Disruptive Behavior in Adults with Prader-Willi Syndrome: A Pilot Study

Science.gov (United States)

Maas, Anneke P. H. M.; Didden, Robert; Bouts, Lex; Smits, Marcel G.; Curfs, Leopold M. G.

2009-01-01

Individuals with Prader-Willi syndrome (PWS) are at risk for excessive daytime sleepiness (EDS) and disruptive behavior. This pilot study explores temporal characteristics of EDS and severe disruptive behavior across time of day and day of week in seven individuals with PWS (aged between 33 and 49 years) of whom five were matched to controls.…

Disruptive Behaviors and Maternal Responsibility: A Complex Portrait of Stigma, Self-Blame, and Other Reactions

Science.gov (United States)

Fernandez, Maria C.; Arcia, Emily

2004-01-01

Feelings of stigma and self-blame were studied among 62 Cuban, Dominican, and Puerto Rican mothers of 4- to 10-year-old children with disruptive behaviors. Data were collected and analyzed both qualitatively and quantitatively. Results indicated that 42% blamed themselves for their children's behaviors, and 39% felt stigmatized by others.…

Harsh Parenting As a Potential Mediator of the Association Between Intimate Partner Violence and Child Disruptive Behavior in Families With Young Children.

Science.gov (United States)

Grasso, Damion J; Henry, David; Kestler, Jacqueline; Nieto, Ricardo; Wakschlag, Lauren S; Briggs-Gowan, Margaret J

2016-07-01

Young children living with intimate partner violence (IPV) are often also exposed to harsh parenting. Both forms of violence increase children's risk for clinically significant disruptive behavior, which can place them on a developmental trajectory associated with serious psychological impairment later in life. Although it is hypothesized that IPV behaviors may spillover into harsh parenting, and thereby influence risk for disruptive behavior, relatively little is known about these processes in families with young children. The current study examines the overlap of the quality and frequency of psychological and physical forms of IPV and harsh parenting, and tests whether harsh parenting mediates the relationship between IPV and child disruptive behavior in a diverse cross-sectional sample of 81 children ages 4 to 6 years. Results suggest that mothers reporting a greater occurrence of psychologically aggressive IPV (e.g., yelling, name-calling) more often engage in psychological and physical aggression toward their children (odds ratios [ORs] = 4.6-9.9). Mothers reporting a greater occurrence of IPV in the form of physical assault more often engage in mild to more severe forms of physical punishment with potential harm to the child (ORs = 3.8-5.0). Psychological and physical forms of IPV and harsh parenting all significantly correlated with maternal reports of child disruptive behavior (r = .29-.40). Psychological harsh parenting partially mediated the association between psychological IPV and child disruptive behavior. However, a significant direct effect of psychological IPV on preschool children's disruptive behavior remained. Implications for child welfare policy and practice and intervention, including the need for increased awareness of the negative impact of psychological IPV on young children, are discussed. © The Author(s) 2015.

Executive Functioning Characteristics Associated with ADHD Comorbidity in Adolescents with Disruptive Behavior Disorders

Science.gov (United States)

Hummer, Tom A.; Kronenberger, William G.; Wang, Yang; Dunn, David W.; Mosier, Kristine M.; Kalnin, Andrew J.; Mathews, Vincent P.

2011-01-01

The nature of executive dysfunction in youth with disruptive behavior disorders (DBD) remains unclear, despite extensive research in samples of children with attention-deficit hyperactivity disorder (ADHD). To determine the relationship between DBD, ADHD, and executive function deficits in aggressive teens, adolescents with DBD and comorbid ADHD…

Classroom-Based Functional Analysis and Intervention for Disruptive and Off-Task Behaviors

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Shumate, Emily D.; Wills, Howard P.

2010-01-01

Although there is a growing body of literature on the use of functional analysis in schools, there is a need for more demonstrations of this technology being used during the course of typical instruction. In this study, we conducted functional analyses of disruptive and off-task behavior in a reading classroom setting for 3 participants of typical…

Exploring the disruptive effects of psychopathy and aggression on group processes and group effectiveness.

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Baysinger, Michael A; Scherer, Kelly T; LeBreton, James M

2014-01-01

The present research examines the influence of implicit and explicit personality characteristics on group process and effectiveness. Individuals from 112 groups participated in 2 problem-solving tasks and completed measures of group process and effectiveness. Results indicated that groups characterized by higher levels of psychopathy and implicit aggression tended to have more dysfunctional interactions and negative perceptions of the group. In addition, task participation and negative socioemotional behaviors fully mediated the relationship between group personality traits and group commitment and cohesion, and negative socioemotional behaviors fully mediated the relationship between group personality and performance on both tasks. Implications of antisocial traits for group interactions and performance, as well as for future theory and research, are discussed. PsycINFO Database Record (c) 2014 APA, all rights reserved

Maternal cognitions about distress and anxiety in young Latino children with disruptive behaviors.

Science.gov (United States)

Arcia, Emily; Castillo, Hector; Fernández, María C

2004-03-01

This study was undertaken to describe how Caribbean Latina mothers understand distress in children, the behaviors that they attribute to it, and the labels that they use to express their cognitions. Findings from 62 mothers of young children with disruptive behaviors indicated that mothers made attributions about anxiety in 40% of the children with a high likelihood of clinical anxiety. Hyperactive and restless behavior, but not children's fears, was understood by mothers to reflect anxiety. References to 'nervios' could be categorized into: an illness condition, a crisis condition, and a temperament type. Only temperament usage was applied to children.

Enhanced Eyeblink Conditioning in Behaviorally Inhibited Individuals is Disrupted by Proactive Interference Following US Alone Pre-exposures.

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Allen, Michael Todd; Miller, Daniel P

2016-01-01

Anxiety vulnerable individuals exhibit enhanced acquisition of conditioned eyeblinks as well as enhanced proactive interference from conditioned stimulus (CS) or unconditioned stimulus (US) alone pre-exposures (Holloway et al., 2012). US alone pre-exposures disrupt subsequent conditioned response (CR) acquisition to CS-US paired trials as compared to context pre-exposure controls. While Holloway et al. (2012) reported enhanced acquisition in high trait anxiety individuals in the context condition, anxiety vulnerability effects were not reported for the US alone pre-exposure group. It appears from the published data that there were no differences between high and low anxiety individuals in the US alone condition. In the work reported here, we sought to extend the findings of enhanced proactive interference with US alone pre-exposures to determine if the enhanced conditioning was disrupted by proactive interference procedures. We also were interested in the spontaneous eyeblinks during the pre-exposure phase of training. We categorized individuals as anxiety vulnerability or non-vulnerable individuals based scores on the Adult Measure of Behavioral Inhibition (AMBI). Sixty-six participants received 60 trials consisting of 30 US alone or context alone pre-exposures followed by 30 CS-US trials. US alone pre-exposures not only disrupted CR acquisition overall, but behaviorally inhibited (BI) individuals exhibited enhanced proactive interference as compared to non-inhibited (NI) individuals. In addition, US alone pre-exposures disrupted the enhanced acquisition observed in BI individuals as compared to NI individuals following context alone pre-exposures. Differences were also found in rates of spontaneous eyeblinks between BI and NI individuals during context pre-exposure. Our findings will be discussed in the light of the neural substrates of eyeblink conditioning as well as possible factors such as hypervigilance in the amygdala and hippocampal systems, and possible

Effect of environmental enrichment devices on behaviors of single- and group-housed squirrel monkeys (Saimiri sciureus)

Science.gov (United States)

Spring, S. E.; Clifford, J. O.; Tomko, D. L.

1997-01-01

Squirrel monkeys display an interest in novel places, habituate to new situations, and spend most of their daily activity in the wild in large groups engaging in feeding behaviors over a broad area. Captivity limits these behaviors and consequently may disrupt normal social organizations. In captivity, squirrel monkeys may exhibit stereotypical behaviors that are believed to indicate decreased psychologic well-being. When a monkey's behavior can be made to approach that seen in the wild, and stereotypical behaviors are minimal, it is assumed that psychologic well-being is adequate. Environmental enrichment devices have been used to address the Animal Welfare Act requirement that psychologic well-being of captive nonhuman primates be considered. The purpose of the study reported here was to examine whether various environmental enrichment devices improve the psychologic well-being of captive squirrel monkeys. In the study, we used behavioral observation to quantify the effectiveness of several environmental enrichment devices for reducing stereotypical behaviors in squirrel monkeys housed alone or in groups. Analysis of our results revealed that the environmental enrichment devices did not affect the expression of normal or stereotypical behaviors, but that the type of housing did.

Ending disruptive behavior: staff nurse recommendations to nurse educators.

Science.gov (United States)

Lux, Kathleen M; Hutcheson, Jane B; Peden, Ann R

2014-01-01

The purpose of this qualitative descriptive study was to identify educational strategies that can prepare new graduates to manage disruptive behavior (DB) in the workplace. DB is any inappropriate behavior, confrontation, or conflict - ranging from verbal abuse to sexual harassment - that harms or intimidates others to the extent that quality of care or patient safety could be compromised. Individual interviews were conducted with nine staff nurses currently in practice in acute care settings in the United States. Staff nurses recommended educational strategies that focused on communication skills for professional practice. These included learning how to communicate with hostile individuals, and giving and receiving constructive criticism. Descriptions that participants provided about their work culture were an unexpected finding that has relevance for nurse educators as they prepare students for transition to practice Nurses described lack of management support and intervention for DB situations, personality clashes with coworkers, and devaluation of nursing work as affecting professional practice. Copyright © 2013 Elsevier Ltd. All rights reserved.

Sex dimorphic behaviors as markers of neuroendocrine disruption by environmental chemicals: the case of chlorpyrifos.

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Venerosi, A; Ricceri, L; Tait, S; Calamandrei, G

2012-12-01

The complexity of the neuroendocrine level of investigation requires the assessment of behavioral patterns that extend beyond the reproductive functions, which are age- and sex-specific in rodents, described by defined clusters of behavioral items regulated by genetic, hormonal, and epigenetic factors. The study of social behavior in laboratory rodents reveals sex-dimorphic effects of environmental chemicals that may be undetected either by a traditional neurotoxicological approach or referring to the classical definition of endocrine disrupting chemicals. Here we review data on the neurobehavioral effects of developmental exposure to the non-persistent organophosphorus insecticide chlorpyrifos, whose neurotoxic activity at low doses is currently a matter of concern for children's health. In mice exposed to chlorpyrifos in utero and/or in early development social/emotional responses are differently affected in the two sexes in parallel with sex-dependent interference on hypothalamic neuroendocrine pathways regulating social behaviors (vasopressin, oxytocin, and steroid regulated systems). Through the analysis of complex sex-dimorphic behavioral patterns we show that neurotoxic and endocrine disrupting activities of CPF overlap. This widely diffused organophosphorus pesticide might thus be considered as a neuroendocrine disruptor possibly representing a risk factor for sex-biased neurodevelopmental disorders in children. Copyright © 2012 Elsevier Inc. All rights reserved.

Facial EMG responses to dynamic emotional facial expressions in boys with disruptive behavior disorders

NARCIS (Netherlands)

Wied, de M.; Boxtel, van Anton; Zaalberg, R.; Goudena, P.P.; Matthys, W.

2006-01-01

Based on the assumption that facial mimicry is a key factor in emotional empathy, and clinical observations that children with disruptive behavior disorders (DBD) are weak empathizers, the present study explored whether DBD boys are less facially responsive to facial expressions of emotions than

What are the disruptive symptoms of behavioral disorders after traumatic brain injury? A systematic review leading to recommendations for good practices.

Science.gov (United States)

Stéfan, Angélique; Mathé, Jean-François

2016-02-01

Behavioral disorders are major sequelae of severe traumatic brain injury. Before considering care management of these disorders, and in the absence of a precise definition for TBI-related behavioral disorder, it is essential to refine, according to the data from the literature, incidence, prevalence, predictive factors of commonly admitted disruptive symptoms. Systematic review of the literature targeting epidemiological data related to behavioral disorders after traumatic brain injury in order to elaborate good practice recommendations according to the methodology established by the French High Authority for Health. Two hundred and ninety-nine articles were identified. The responsibility of traumatic brain injury (TBI) in the onset of behavioral disorders is unequivocal. Globally, behavioral disorders are twice more frequent after TBI than orthopedic trauma without TBI (Masson et al., 1996). These disorders are classified into disruptive primary behaviors by excess (agitation 11-70%, aggression 25-39%, irritability 29-71%, alcohol abuse 7-26% drug abuse 2-20%), disruptive primary behaviors by default (apathy 20-71%), affective disorders - anxiety - psychosis (depression 12-76%, anxiety 0.8-24,5%, posttraumatic stress 11-18%, obsessive-compulsive disorders 1.2-30%, psychosis 0.7%), suicide attempts and suicide 1%. The improvement of care management for behavioral disorders goes through a first step of defining a common terminology. Four categories of posttraumatic behavioral clinical symptoms are defined: disruptive primary behaviors by excess, by default, affective disorders-psychosis-anxiety, suicide attempts and suicide. All these symptoms yield a higher prevalence than in the general population. They impact all of life's domains and are sustainable over time. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

Pramipexole-induced disruption of behavioral processes fundamental to intertemporal choice.

Science.gov (United States)

Johnson, Patrick S; Stein, Jeffrey S; Smits, Rochelle R; Madden, Gregory J

2013-05-01

Evaluating the effects of presession drug administration on intertemporal choice in nonhumans is a useful approach for identifying compounds that promote impulsive behavior in clinical populations, such as those prescribed the dopamine agonist pramipexole (PPX). Based on the results of previous studies, it is unclear whether PPX increases rats' impulsive choice or attenuates aspects of stimulus control. The present study was designed to experimentally isolate behavioral processes fundamental to intertemporal choice and challenge them pharmacologically with PPX administration. In Experiment 1, the hypothesis that PPX increases impulsive choice as a result of enhanced sensitivity to reinforcer delays was tested and disconfirmed. That is, acute PPX diminished delay sensitivity in a manner consistent with disruption of stimulus control whereas repeated PPX had no effect on delay sensitivity. Experiments 2 and 3 elaborated upon this finding by examining the effects of repeated PPX on rats' discrimination of response-reinforcer contingencies and reinforcer amounts, respectively. Accuracy of both discriminations was reduced by PPX. Collectively these results provide no support for past studies that have suggested PPX increases impulsive choice. Instead, PPX impairs stimulus control over choice behavior. The behavioral approach adopted herein could be profitably integrated with genetic and other biobehavioral models to advance our understanding of impulsive behavior associated with drug administration. © Society for the Experimental Analysis of Behavior.

Longitudinal associations between maternal disrupted representations, maternal interactive behavior and infant attachment: A comparison between full-term and preterm dyads

NARCIS (Netherlands)

Hall, R.A.S.; Hoffenkamp, H.N.; Tooten, A.; Braeken, J.; Vingerhoets, A.J.J.M.; van Bakel, H.J.A.

2015-01-01

This prospective study examined whether or not a mother’s representations of her infant were more often disrupted after premature childbirth. Furthermore, the study examined if different components of maternal interactive behavior mediated the relation between maternal disrupted representations and

Testing the effects of safety climate and disruptive children behavior on school bus drivers performance: A multilevel model.

Science.gov (United States)

Zohar, Dov; Lee, Jin

2016-10-01

The study was designed to test a multilevel path model whose variables exert opposing effects on school bus drivers' performance. Whereas departmental safety climate was expected to improve driving safety, the opposite was true for in-vehicle disruptive children behavior. The driving safety path in this model consists of increasing risk-taking practices starting with safety shortcuts leading to rule violations and to near-miss events. The study used a sample of 474 school bus drivers in rural areas, driving children to school and school-related activities. Newly developed scales for measuring predictor, mediator and outcome variables were validated with video data taken from inner and outer cameras, which were installed in 29 buses. Results partially supported the model by indicating that group-level safety climate and individual-level children distraction exerted opposite effects on the driving safety path. Furthermore, as hypothesized, children disruption moderated the strength of the safety rule violation-near miss relationship, resulting in greater strength under high disruptiveness. At the same time, the hypothesized interaction between the two predictor variables was not supported. Theoretical and practical implications for studying safety climate in general and distracted driving in particular for professional drivers are discussed. Copyright © 2016 Elsevier Ltd. All rights reserved.

Vomeronasal organ lesion disrupts social odor recognition, behaviors and fitness in golden hamsters.

Science.gov (United States)

Liu, Yingjuan; Zhang, Jinhua; Liu, Dingzhen; Zhang, Jianxu

2014-06-01

Most studies support the viewpoint that the vomeronasal organ has a profound effect on conspecific odor recognition, scent marking and mating behavior in the golden hamster (Mesocricetus auratus). However, the role of the vomeronasal organ in social odor recognition, social interaction and fitness is not well understood. Therefore, we conducted a series of behavioral and physiological tests to examine the referred points in golden hamster. We found that male hamsters with vomeronasal organ lesion showed no preference between a predator odor (the anal gland secretion of the Siberian weasels (Mustela sibirica) and putative female pheromone components (myristic acid and palmitic acid), but were still able to discriminate between these 2 kinds of odors. In behavioral tests of anxiety, we found that vomeronasal organ removal causes female hamsters to spend much less time in center grids and to cross fewer center grids and males to make fewer crossings between light and dark boxes than sham-operated controls. This indicates that a chronic vomeronasal organ lesion induced anxious responses in females. In aggressive behavioral tests, we found that a chronic vomeronasal organ lesion decreased agonistic behavior in female hamsters but not in males. The pup growth and litter size show no differences between the 2 groups. All together, our data suggested that vomeronasal organ ablation disrupted the olfactory recognition of social chemosignals in males, and induced anxiety-like and aggressive behavior changes in females. However, a vomeronasal organ lesion did not affect the reproductive capacity and fitness of hamsters. Our studies may have important implications concerning the role of the vomeronasal organ in golden hamsters and also in rodents. © 2013 International Society of Zoological Sciences, Institute of Zoology/Chinese Academy of Sciences and Wiley Publishing Asia Pty Ltd.

Evaluation of Improvement in Externalizing Behaviors and Callous-Unemotional Traits in Children with Disruptive Behavior Disorder: A 1-Year Follow Up Clinic-Based Study.

Science.gov (United States)

Muratori, Pietro; Milone, Annarita; Manfredi, Azzurra; Polidori, Lisa; Ruglioni, Laura; Lambruschi, Furio; Masi, Gabriele; Lochman, John E

2017-07-01

Multi-component interventions based on cognitive behavioral principles and practices have been found effective in reducing behavioral problems in children with disruptive behavior disorders (oppositional defiant disorder and conduct disorder). However, it is still unclear if these interventions can affect children's callous-unemotional traits, which are predictive of subsequent antisocial behavior. Furthermore, it could be important to identify empirically supported treatment protocols for specific disorders addressed by child mental health services. The present study aimed to test the following two hypotheses: first, the Coping Power (CP) treatment program is able to reduce externalizing behaviors in children with disruptive behavior disorders treated in a mental health care unit; second, the CP program can reduce children's callous unemotional traits. The sample included 98 Italian children, 33 treated with the CP program; 37 with a less focused multi-component intervention, and 28 with child psychotherapy. The results showed that the CP program was more effective than the other two treatments in reducing aggressive behaviors. Furthermore, only the CP program was associated with a decrease in children's callous unemotional traits. The CP program was also associated with lower rate of referrals to mental health services at one-year follow-up. These findings support the importance of disseminating manualized and focused intervention programs in mental health services.

Treating young children's disruptive behavior problems: dissemination of an evidence- based parent management training program in the Netherlands

NARCIS (Netherlands)

Abrahamse, Mariëlle

2015-01-01

High levels of young children’s disruptive behavior problems are persistent, highly prevalent, and a serious public health concern. If left untreated, these behaviors can lead to serious difficulties in broad areas of child and family functioning, and economically impact the wider society.

Efektivitas Anger Management Training Untuk Menurunkan Agresivitas Pada Remaja Disruptive Behavior Disorders

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Nasrizulhaidi Nasrizulhaidi

2016-04-01

Full Text Available Penelitian ini bertujuan mengetahui efektivitas anger management training untuk menurunkan agresivitas pada remaja disruptive behavior disorders. Subjek penelitian dipilih melalui screening dengan skala CPRS (Conduct Problem Risk Screen dan pengukuran agresivitas dengan skala Buss-Perry Aggression Questionnaire (BAQ. AMT (Anger Management Training berupa psikoedukasi, yang mempelajari tentang pemahaman dasar marah, ekspresi marah dan akibatnya, mengidentifikasi diri saat marah, mengontrol pikiran marah dan menentukan tingkat kemarahan. Selanjutnya memahami anger management melalui film, relaksasi otot dan pernapasan, cara menyelesaikan konflik, cara mengontrol marah dan perencanaan dalam mengontrol marah. Adapun metode intervensi yang digunakan terdiri dari diskusi kasus, latihan individual, presentasi dan modelling perilaku. Penempatan subjek dengan random assignment dibagi menjadi dua kelompok. Kelompok eksperimen berjumlah 10 orang, mendapat AMT selama 3 kali pertemuan dan setiap pertemuan memerlukan waktu 120 menit. Sementara subjek di kelompok kontrol juga berjumlah 10 orang, namun tidak mendapatkan perlakuan. Dapat disimpulkan anger management efektif untuk menurunkan agresivitas. Dalam hal ini subjek di kelompok eksperimen mengalami penurunan agresivitas setelah mendapat AMT dan subjek di kelompok kontrol mengalami peningkatan agresivitas karena tidak mendapatkan AMT. Selain itu AMT dapat pula diberikan pada individu yang memiliki kemampuan di bawah rata-rata, dengan memodifikasi program yang lebih berbentuk operasional konkrit. Kata kunci: anger management training, agresivitas, disruptive behavior disorders

A Randomized Trial of the Self-Management Training and Regulation Strategy (STARS): A Selective Intervention for Students with Disruptive Behaviors

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Thompson, Aaron M.

2012-01-01

To attain academic goals, school personnel must effectively manage 20% of students who engage in the disruptive behaviors that interrupt instruction, create teacher stress, and contribute to poor student outcomes. Without effective strategies, school personnel often respond to disruptive students with ineffective authoritarian tactics,…

Disruptive Behavior Disorders in Adolescents with ASD: Comparisons to Youth with Intellectual Disability or Typical Cognitive Development

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Baker, Bruce L.; Blacher, Jan

2015-01-01

Dual diagnosis of autism spectrum disorder (ASD) and behavior problems and/or mental disorders has become increasingly recognized and studied. Reported rates in samples of mixed-age youth with ASD are often above 70%, making this comorbidity more the rule than the exception. The present study compared rates of disruptive behavior disorder…

Behavior of hard X-ray emission in discharges with current disruptions in the DAMAVAND and TVD tokamaks

International Nuclear Information System (INIS)

Farshi, E.; Amrollahy, R.; Bortnikov, A.V.; Brevnov, N.N.; Gott, Yu.V.; Shurygin, V.A.

2001-01-01

Results are presented from studies of the behavior of hard X-ray emission in discharges with current disruptions in the DAMAVAND and TVD tokamaks. The current disruptions are caused by either an MHD instability or the instability related to the vertical displacement of the plasma column. Experiments were conducted at a fixed value of the safety factor at the plasma boundary (q a ≅ 2.3). Experimental data show that, during a disruption caused by an MHD instability, hard X-ray emission is suppressed by this instability if the amplitude of the magnetic field fluctuations exceeds a certain level. If the disruption is caused by the instability related to the vertical displacement of the plasma column, then hard X-ray emission is observed at the instant of disruption. The experimental results show that the physical processes resulting in the generation and suppression of runaway electron beams are almost identical in large and small tokamaks

Prosocial skills may be necessary for better peer functioning in children with symptoms of disruptive behavior disorders

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Browne, Dillon T.; Tannock, Rosemary

2014-01-01

Children with disruptive behavior disorders experience substantial social challenges; however, the factors that account for (i.e., mediate), or influence (i.e., moderate), peer problems are not well understood. This study tested whether symptoms of Oppositional Defiant Disorder and Conduct Disorder were associated with peer impairment and whether prosocial skills mediated or moderated these associations. Teacher ratings were gathered for 149 children (Mage = 9.09, SD = 1.71, 26% female) referred for behavioral concerns to an urban child psychiatry clinic. Path-analytic linear regressions testing mediation and moderation effects showed that prosocial skills significantly moderated the negative effects of symptoms of Conduct Disorder on peer impairment. Children showed less peer impairment only when they had relatively few conduct symptoms and high prosocial skills. Measurement of prosocial skills, in addition to conduct problems, may best capture factors which contribute to peer problems of children with disruptive behaviors. PMID:25083349

Prosocial skills may be necessary for better peer functioning in children with symptoms of disruptive behavior disorders.

Science.gov (United States)

Andrade, Brendan F; Browne, Dillon T; Tannock, Rosemary

2014-01-01

Children with disruptive behavior disorders experience substantial social challenges; however, the factors that account for (i.e., mediate), or influence (i.e., moderate), peer problems are not well understood. This study tested whether symptoms of Oppositional Defiant Disorder and Conduct Disorder were associated with peer impairment and whether prosocial skills mediated or moderated these associations. Teacher ratings were gathered for 149 children (Mage = 9.09, SD = 1.71, 26% female) referred for behavioral concerns to an urban child psychiatry clinic. Path-analytic linear regressions testing mediation and moderation effects showed that prosocial skills significantly moderated the negative effects of symptoms of Conduct Disorder on peer impairment. Children showed less peer impairment only when they had relatively few conduct symptoms and high prosocial skills. Measurement of prosocial skills, in addition to conduct problems, may best capture factors which contribute to peer problems of children with disruptive behaviors.

Prosocial skills may be necessary for better peer functioning in children with symptoms of disruptive behavior disorders

Directory of Open Access Journals (Sweden)

Brendan F. Andrade

2014-07-01

Full Text Available Children with disruptive behavior disorders experience substantial social challenges; however, the factors that account for (i.e., mediate, or influence (i.e., moderate, peer problems are not well understood. This study tested whether symptoms of Oppositional Defiant Disorder and Conduct Disorder were associated with peer impairment and whether prosocial skills mediated or moderated these associations. Teacher ratings were gathered for 149 children (Mage = 9.09, SD = 1.71, 26% female referred for behavioral concerns to an urban child psychiatry clinic. Path-analytic linear regressions testing mediation and moderation effects showed that prosocial skills significantly moderated the negative effects of symptoms of Conduct Disorder on peer impairment. Children showed less peer impairment only when they had relatively few conduct symptoms and high prosocial skills. Measurement of prosocial skills, in addition to conduct problems, may best capture factors which contribute to peer problems of children with disruptive behaviors.

The Contribution of Parenting Practices and Parent Emotion Factors in Children at Risk for Disruptive Behavior Disorders

Science.gov (United States)

Duncombe, Melissa E.; Havighurst, Sophie S.; Holland, Kerry A.; Frankling, Emma J.

2012-01-01

The goal of this study was to examine the impact of different parenting characteristics on child disruptive behavior and emotional regulation among a sample of at-risk children. The sample consisted of 373 Australian 5- to 9-year-old children who were screened for serious behavior problems. Seven parenting variables based on self-report were…

Concurrent attenuated reactivity of alpha-amylase and cortisol is related to disruptive behavior in male adolescents

NARCIS (Netherlands)

Bouw, M.; Jansen, L.M.C.; Vermeiren, R.R.J.M.; Doreleijers, T.A.H.; van de Ven, P.M.; Popma, A.

2012-01-01

Attenuated reactivity of salivary alpha-amylase has been proposed as a specific sympathetic marker of disruptive behavior in juveniles and may have additional value to studying other autonomic parameters and hypothalamic-pituitary-adrenal axis activity. Investigating the interrelationships between

Resistance to Disruption in a Classroom Setting

Science.gov (United States)

Parry-Cruwys, Diana E.; Neal, Carrie M.; Ahearn, William H.; Wheeler, Emily E.; Premchander, Raseeka; Loeb, Melissa B.; Dube, William V.

2011-01-01

Substantial experimental evidence indicates that behavior reinforced on a denser schedule is more resistant to disruption than is behavior reinforced on a thinner schedule. The present experiment studied resistance to disruption in a natural educational environment. Responding during familiar activities was reinforced on a multiple…

Testing the Efficacy of INSIGHTS on Student Disruptive Behavior, Classroom Management, and Student Competence in Inner City Primary Grades.

Science.gov (United States)

McClowry, Sandra Graham; Snow, David L; Tamis-Lemonda, Catherine S; Rodriguez, Eileen T

2010-03-01

A prevention trial tested the efficacy of INSIGHTS into Children's Temperament as compared to a Read Aloud attention control condition in reducing student disruptive behavior and enhancing student competence and teacher classroom management. Participants included 116 first and second grade students, their parents, and their 42 teachers in six inner city schools. Teachers completed the Sutter-Eyberg Student Behavior Inventory (SESBI) and the Teacher's Rating Scale of Child's Actual Competence and Social Acceptance (TRS) at baseline and again upon completion of the intervention. Boys participating in INSIGHTS, compared with those in the Read Aloud program, showed a significant decline in attentional difficulties and overt aggression toward others. Teachers in INSIGHTS, compared to those in the attention control condition, reported significantly fewer problems managing the emotional-oppositional behavior, attentional difficulties, and covert disruptive behavior of their male students. They also perceived the boys as significantly more cognitively and physically competent.

Dissociation of sad facial expressions and autonomic nervous system responding in boys with disruptive behavior disorders

OpenAIRE

Marsh, Penny; Beauchaine, Theodore P.; Williams, Bailey

2007-01-01

Although deficiencies in emotional responding have been linked to externalizing behaviors in children, little is known about how discrete response systems (e.g., expressive, physiological) are coordinated during emotional challenge among these youth. We examined time-linked correspondence of sad facial expressions and autonomic reactivity during an empathy-eliciting task among boys with disruptive behavior disorders (n = 31) and controls (n = 23). For controls, sad facial expressions were ass...

Road trauma in teenage male youth with childhood disruptive behavior disorders: a population based analysis.

Directory of Open Access Journals (Sweden)

Donald A Redelmeier

Full Text Available BACKGROUND: Teenage male drivers contribute to a large number of serious road crashes despite low rates of driving and excellent physical health. We examined the amount of road trauma involving teenage male youth that might be explained by prior disruptive behavior disorders (attention deficit hyperactivity disorder, conduct disorder, oppositional defiant disorder. METHODS AND FINDINGS: We conducted a population-based case-control study of consecutive male youth between age 16 and 19 years hospitalized for road trauma (cases or appendicitis (controls in Ontario, Canada over 7 years (April 1, 2002 through March 31, 2009. Using universal health care databases, we identified prior psychiatric diagnoses for each individual during the decade before admission. Overall, a total of 3,421 patients were admitted for road trauma (cases and 3,812 for appendicitis (controls. A history of disruptive behavior disorders was significantly more frequent among trauma patients than controls (767 of 3,421 versus 664 of 3,812, equal to a one-third increase in the relative risk of road trauma (odds ratio  =  1.37, 95% confidence interval 1.22-1.54, p<0.001. The risk was evident over a range of settings and after adjustment for measured confounders (odds ratio 1.38, 95% confidence interval 1.21-1.56, p<0.001. The risk explained about one-in-20 crashes, was apparent years before the event, extended to those who died, and persisted among those involved as pedestrians. CONCLUSIONS: Disruptive behavior disorders explain a significant amount of road trauma in teenage male youth. Programs addressing such disorders should be considered to prevent injuries.

Maternal and Early-Life Circadian Disruption Have Long-Lasting Negative Consequences on Offspring Development and Adult Behavior in Mice.

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Smarr, Benjamin L; Grant, Azure D; Perez, Luz; Zucker, Irving; Kriegsfeld, Lance J

2017-06-12

Modern life involves chronic circadian disruption through artificial light and these disruptions are associated with numerous mental and physical health maladies. Because the developing nervous system is particularly vulnerable to perturbation, we hypothesized that early-life circadian disruption would negatively impact offspring development and adult function. Pregnant mice were subjected to chronic circadian disruption from the time of uterine implantation through weaning. To dissociate in utero from postnatal effects, a subset of litters was cross-fostered at birth from disrupted dams to control dams and vice versa. Postnatal circadian disruption was associated with reduced adult body mass, social avoidance, and hyperactivity. In utero disruption resulted in more pronounced social avoidance and hyperactivity, phenotypes not abrogated by cross-fostering to control mothers. To examine whether circadian disruption affects development by acting as an early life stressor, we examined birthweight, litter size, maternal cannibalism, and epigenetic modifications. None of these variables differed between control and disrupted dams, or resembled patterns seen following early-life stress. Our findings indicate that developmental chronic circadian disruption permanently affects somatic and behavioral development in a stage-of-life-dependent manner, independent of early life stress mechanisms, underscoring the importance of temporal structure during development, both in utero and early postnatal life.

Parents’ Education, Personality, and Their Children’s Disruptive Behaviour

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Purwati

2017-07-01

Full Text Available The aims of this study were (1 to understand the effects of parents' education and personality aspects on child disruptive behavior, (2 to know the correlation between the parents' personality aspects (N-Deference, N-Succorance, NDominance and N-Aggression and the children' disruptive behavior. A quantitative approach to the correlational design was employed. Three variables were studied, namely parents' education and personality as the independent variables and child disruptive behavior as the independent variable. The applied instruments are questionnaires, (2 personality test (EPPS, and (3 observation with time and interval samplings approach. The population is from Magelang, Indonesia, while the participants are 100 children at the age of 5 – 7 years and their parents. The results show that (1 there are some effects of parents' education and personality on child disruptive behavior, and (2 aggressive aspects of the parents' personality gave great effects on child disruptive behavior, followed by the succorance, deference, and at the lowest level, the dominance aspects

The processing of animacy information is disrupted as a function of callous-unemotional traits in youth with disruptive behavior disorders

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Laura C. Thornton

2017-01-01

Full Text Available Atypical amygdala responses to emotional stimuli have been consistently reported in youth with Disruptive Behavior Disorders (DBDs; Conduct Disorder/Oppositional Defiant Disorder. However, responding to animacy stimuli has not been systematically investigated. Yet, the amygdala is known to be responsive to animacy stimuli and impairment in responsiveness to animacy information may have implications for social cognitive development. Twenty-nine youth with DBDs and 20 typically developing youth, matched for IQ, age (Mage = 14.45, SD = 2.05 and gender, completed a dot probe task during fMRI. Stimuli consisted of negative/faces, negative/objects, neutral/faces and neutral/objects images. Youth with DBDs, relative to typically developing youth, showed: i reduced amygdala and lateral temporal cortex responses to faces relative to objects. Moreover, within the group of youth with DBDs, increasing callous-unemotional traits were associated with lesser amygdala responses to faces relative to objects. These data suggest that youth with DBDs, particularly those with high levels of CU traits exhibit dysfunction in animacy processing in the amygdala. This dysfunction may underpin the asociality reported in these youth.

Neural Rhythms of Change: Long-Term Improvement after Successful Treatment in Children with Disruptive Behavior Problems

NARCIS (Netherlands)

Woltering, S.; Liao, V.; Liu, Z.X.; Granic, I.

2015-01-01

Neural changes were investigated for children with disruptive behavior problems one year after a treatment program ended. Thirty-nine children and their parents visited the research lab before, after, and a year after treatment ended. During those lab visits, electroencephalography (EEG) was

Genetic Disruption of Circadian Rhythms in the Suprachiasmatic Nucleus Causes Helplessness, Behavioral Despair, and Anxiety-like Behavior in Mice

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Landgraf, Dominic; Long, Jaimie E.; Proulx, Christophe D.; Barandas, Rita; Malinow, Roberto; Welsh, David K.

2016-01-01

Background Major depressive disorder is associated with disturbed circadian rhythms. To investigate the causal relationship between mood disorders and circadian clock disruption, previous studies in animal models have employed light/dark manipulations, global mutations of clock genes, or brain area lesions. However, light can impact mood by noncircadian mechanisms; clock genes have pleiotropic, clock-independent functions; and brain lesions not only disrupt cellular circadian rhythms but also destroy cells and eliminate important neuronal connections, including light reception pathways. Thus, a definitive causal role for functioning circadian clocks in mood regulation has not been established. Methods We stereotactically injected viral vectors encoding short hairpin RNA to knock down expression of the essential clock gene Bmal1 into the brain's master circadian pacemaker, the suprachiasmatic nucleus (SCN). Results In these SCN-specific Bmal1-knockdown (SCN-Bmal1-KD) mice, circadian rhythms were greatly attenuated in the SCN, while the mice were maintained in a standard light/dark cycle, SCN neurons remained intact, and neuronal connections were undisturbed, including photic inputs. In the learned helplessness paradigm, the SCN-Bmal1-KD mice were slower to escape, even before exposure to inescapable stress. They also spent more time immobile in the tail suspension test and less time in the lighted section of a light/dark box. The SCN-Bmal1-KD mice also showed greater weight gain, an abnormal circadian pattern of corticosterone, and an attenuated increase of corticosterone in response to stress. Conclusions Disrupting SCN circadian rhythms is sufficient to cause helplessness, behavioral despair, and anxiety-like behavior in mice, establishing SCN-Bmal1-KD mice as a new animal model of depression. PMID:27113500

Genetic Disruption of Circadian Rhythms in the Suprachiasmatic Nucleus Causes Helplessness, Behavioral Despair, and Anxiety-like Behavior in Mice.

Science.gov (United States)

Landgraf, Dominic; Long, Jaimie E; Proulx, Christophe D; Barandas, Rita; Malinow, Roberto; Welsh, David K

2016-12-01

Major depressive disorder is associated with disturbed circadian rhythms. To investigate the causal relationship between mood disorders and circadian clock disruption, previous studies in animal models have employed light/dark manipulations, global mutations of clock genes, or brain area lesions. However, light can impact mood by noncircadian mechanisms; clock genes have pleiotropic, clock-independent functions; and brain lesions not only disrupt cellular circadian rhythms but also destroy cells and eliminate important neuronal connections, including light reception pathways. Thus, a definitive causal role for functioning circadian clocks in mood regulation has not been established. We stereotactically injected viral vectors encoding short hairpin RNA to knock down expression of the essential clock gene Bmal1 into the brain's master circadian pacemaker, the suprachiasmatic nucleus (SCN). In these SCN-specific Bmal1-knockdown (SCN-Bmal1-KD) mice, circadian rhythms were greatly attenuated in the SCN, while the mice were maintained in a standard light/dark cycle, SCN neurons remained intact, and neuronal connections were undisturbed, including photic inputs. In the learned helplessness paradigm, the SCN-Bmal1-KD mice were slower to escape, even before exposure to inescapable stress. They also spent more time immobile in the tail suspension test and less time in the lighted section of a light/dark box. The SCN-Bmal1-KD mice also showed greater weight gain, an abnormal circadian pattern of corticosterone, and an attenuated increase of corticosterone in response to stress. Disrupting SCN circadian rhythms is sufficient to cause helplessness, behavioral despair, and anxiety-like behavior in mice, establishing SCN-Bmal1-KD mice as a new animal model of depression. Copyright © 2016 Society of Biological Psychiatry. All rights reserved.

Neural Rhythms of Change: Long-Term Improvement after Successful Treatment in Children with Disruptive Behavior Problems

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Steven Woltering

2015-01-01

Full Text Available Neural changes were investigated for children with disruptive behavior problems one year after a treatment program ended. Thirty-nine children and their parents visited the research lab before, after, and a year after treatment ended. During those lab visits, electroencephalography (EEG was recorded during a challenging Go/No-go task. Treatment consisted of intensive 14-week combined cognitive behavioral therapy and parent management training sessions. For the analysis, participants were divided into long-term improvers (IMPs and long-term nonimprovers (NIMPs based on changes in their externalizing problem scores. The results showed early no-go theta power (4–8 Hz, 100–250 ms decreased for long-term IMPs compared to NIMPs. When participants were divided based on changes in their comorbid internalizing symptoms, effects were stronger and reductions in theta power were found for early as well as later phases (250–650 ms. We provided preliminary evidence that theta power is a useful neural measure to trace behavioral change linked to improved self-regulation even up to a year after treatment ended. Results may have implications for the characterization of children with disruptive behavior problems and may lead to the development of novel markers of treatment success.

Brief Report: Examining children’s disruptive behavior in the wake of trauma - A two-piece growth curve model before and after a school shooting

Science.gov (United States)

Liao, Yue; Shonkoff, Eleanor T.; Barnett, Elizabeth; Wen, CK Fred; Miller, Kimberly A.; Eddy, J. Mark

2015-01-01

School shootings may have serious negative impacts on children years after the event. Previous research suggests that children exposed to traumatic events experience heightened fear, anxiety, and feelings of vulnerability, but little research has examined potential aggressive and disruptive behavioral reactions. Utilizing a longitudinal dataset in which a local school shooting occurred during the course of data collection, this study sought to investigate whether the trajectory of disruptive behaviors was affected by the shooting. A two-piece growth curve model was used to examine the trajectory of disruptive behaviors during the pre-shooting years (i.e., piece one) and post-shooting years (i.e., piece two). Results indicated that the two-piece growth curve model fit the data better than the one-piece model and that the school shooting precipitated a faster decline in aggressive behaviors. This study demonstrated a novel approach to examining effects of an unexpected traumatic event on behavioral trajectories using an existing longitudinal data set. PMID:26298676

Disrupted expected value signaling in youth with disruptive behavior disorders to environmental reinforcers.

Science.gov (United States)

White, Stuart F; Fowler, Katherine A; Sinclair, Stephen; Schechter, Julia C; Majestic, Catherine M; Pine, Daniel S; Blair, R James

2014-05-01

Youth with disruptive behavior disorders (DBD), including conduct disorder (CD) and oppositional defiant disorder (ODD), have difficulties in reinforcement-based decision making, the neural basis of which is poorly understood. Studies examining decision making in youth with DBD have revealed reduced reward responses within the ventromedial prefrontal cortex/orbitofrontal cortex (vmPFC/OFC), increased responses to unexpected punishment within the vmPFC and striatum, and reduced use of expected value information in the anterior insula cortex and dorsal anterior cingulate cortex during the avoidance of suboptimal choices. Previous work has used only monetary reinforcement. The current study examined whether dysfunction in youth with DBD during decision making extended to environmental reinforcers. A total of 30 youth (15 healthy youth and 15 youth with DBD) completed a novel reinforcement-learning paradigm using environmental reinforcers (physical threat images, e.g., striking snake image; contamination threat images, e.g., rotting food; appetitive images, e.g., puppies) while undergoing functional magnetic resonance imaging (fMRI). Behaviorally, healthy youth were significantly more likely to avoid physical threat, but not contamination threat, stimuli than youth with DBD. Imaging results revealed that youth with DBD showed significantly reduced use of expected value information in the bilateral caudate, thalamus, and posterior cingulate cortex during the avoidance of suboptimal responses. The current data suggest that youth with DBD show deficits to environmental reinforcers similar to the deficits seen to monetary reinforcers. Importantly, this deficit was unrelated to callous-unemotional (CU) traits, suggesting that caudate impairment may be a common deficit across youth with DBD. Published by Elsevier Inc.

Brief report: Examining children's disruptive behavior in the wake of trauma - A two-piece growth curve model before and after a school shooting.

Science.gov (United States)

Liao, Yue; Shonkoff, Eleanor T; Barnett, Elizabeth; Wen, C K Fred; Miller, Kimberly A; Eddy, J Mark

2015-10-01

School shootings may have serious negative impacts on children years after the event. Previous research suggests that children exposed to traumatic events experience heightened fear, anxiety, and feelings of vulnerability, but little research has examined potential aggressive and disruptive behavioral reactions. Utilizing a longitudinal dataset in which a local school shooting occurred during the course of data collection, this study sought to investigate whether the trajectory of disruptive behaviors was affected by the shooting. A two-piece growth curve model was used to examine the trajectory of disruptive behaviors during the pre-shooting years (i.e., piece one) and post-shooting years (i.e., piece two). Results indicated that the two-piece growth curve model fit the data better than the one-piece model and that the school shooting precipitated a faster decline in aggressive behaviors. This study demonstrated a novel approach to examining effects of an unexpected traumatic event on behavioral trajectories using an existing longitudinal data set. Copyright © 2015 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

Sleep disruption among cancer patients following autologous hematopoietic cell transplantation.

Science.gov (United States)

Nelson, Ashley M; Jim, Heather S L; Small, Brent J; Nishihori, Taiga; Gonzalez, Brian D; Cessna, Julie M; Hyland, Kelly A; Rumble, Meredith E; Jacobsen, Paul B

2018-03-01

Despite a high prevalence of sleep disruption among hematopoietic cell transplant (HCT) recipients, relatively little research has investigated its relationships with modifiable cognitive or behavioral factors or used actigraphy to characterize sleep disruption in this population. Autologous HCT recipients who were 6-18 months post transplant completed self-report measures of cancer-related distress, fear of cancer recurrence, dysfunctional sleep cognitions, and inhibitory sleep behaviors upon enrollment. Patients then wore an actigraph for 7 days and completed a self-report measure of sleep disruption on day 7 of the study. Among the 84 participants (age M = 60, 45% female), 41% reported clinically relevant sleep disruption. Examination of actigraph data confirmed that, on average, sleep was disrupted (wake after sleep onset M = 66 min) and sleep efficiency was less than recommended (sleep efficiency M = 78%). Cancer-related distress, fear of recurrence, dysfunctional sleep cognitions, and inhibitory sleep behaviors were related to self-reported sleep disruption (p valuesdisruption after transplant. Cancer-related distress, fear of recurrence, dysfunctional sleep cognitions, and maladaptive sleep behaviors are related to self-reported sleep disruption and should be considered targets for cognitive behavioral intervention in this population.

School-based intervention for childhood disruptive behavior in disadvantaged settings: A randomized controlled trial with and without active teacher support

NARCIS (Netherlands)

Liber, J.M.; de Boo, G.M.; Huizenga, H.; Prins, P.J.M.

2013-01-01

Objective: In this randomized controlled trial, we investigated the effectiveness of a school-based targeted intervention program for disruptive behavior. A child-focused cognitive behavioral therapy (CBT) program was introduced at schools in disadvantaged settings and with active teacher support

School-based intervention for childhood disruptive behavior in disadvantaged settings: A school-based RCT with and without active teacher support.

NARCIS (Netherlands)

Liber, J.M.; de Boo, G.M.; Huizenga, H.; Prins, P.J.M.

2013-01-01

Objective: In this randomized controlled trial, we investigated the effectiveness of a school-based targeted intervention program for disruptive behavior. A child-focused cognitive behavioral therapy (CBT) program was introduced at schools in disadvantaged settings and with active teacher support

Conditional deletion of Cadherin 13 perturbs Golgi cells and disrupts social and cognitive behaviors.

Science.gov (United States)

Tantra, M; Guo, L; Kim, J; Zainolabidin, N; Eulenburg, V; Augustine, G J; Chen, A I

2018-02-15

Inhibitory interneurons mediate the gating of synaptic transmission and modulate the activities of neural circuits. Disruption of the function of inhibitory networks in the forebrain is linked to impairment of social and cognitive behaviors, but the involvement of inhibitory interneurons in the cerebellum has not been assessed. We found that Cadherin 13 (Cdh13), a gene implicated in autism spectrum disorder and attention-deficit hyperactivity disorder, is specifically expressed in Golgi cells within the cerebellar cortex. To assess the function of Cdh13 and utilize the manipulation of Cdh13 expression in Golgi cells as an entry point to examine cerebellar-mediated function, we generated mice carrying Cdh13-floxed alleles and conditionally deleted Cdh13 with GlyT2::Cre mice. Loss of Cdh13 results in a decrease in the expression/localization of GAD67 and reduces spontaneous inhibitory postsynaptic current (IPSC) in cerebellar Golgi cells without disrupting spontaneous excitatory postsynaptic current (EPSC). At the behavioral level, loss of Cdh13 in the cerebellum, piriform cortex and endopiriform claustrum have no impact on gross motor coordination or general locomotor behaviors, but leads to deficits in cognitive and social abilities. Mice lacking Cdh13 exhibit reduced cognitive flexibility and loss of preference for contact region concomitant with increased reciprocal social interactions. Together, our findings show that Cdh13 is critical for inhibitory function of Golgi cells, and that GlyT2::Cre-mediated deletion of Cdh13 in non-executive centers of the brain, such as the cerebellum, may contribute to cognitive and social behavioral deficits linked to neurological disorders. © 2018 The Authors. Genes, Brain and Behavior published by International Behavioural and Neural Genetics Society and John Wiley & Sons Ltd.

Alternative Education: A Comparative Case Study of the Behavior Modification Programs of Two Upstate South Carolina Alternative Schools for Youth Who Exhibit Behavior That Is Disruptive

Science.gov (United States)

Scipio, Timothy Lamont

2013-01-01

This study examined behavior modification programs in schools designed to focus on discipline and that aim to reform disruptive behavior in students, usually over a limited period of time. This was a comparative case study of two type II alternative schools in the Upstate of South Carolina. The findings contributed to the research base regarding…

Longitudinal associations between maternal disrupted representations, maternal interactive behavior and infant attachment: a comparison between full-term and preterm dyads.

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Hall, R A S; Hoffenkamp, H N; Tooten, A; Braeken, J; Vingerhoets, A J J M; van Bakel, H J A

2015-04-01

This prospective study examined whether or not a mother's representations of her infant were more often disrupted after premature childbirth. Furthermore, the study examined if different components of maternal interactive behavior mediated the relation between maternal disrupted representations and infant attachment. The participants were mothers of full-term (n = 75), moderately preterm (n = 68) and very preterm infants (n = 67). Maternal representations were assessed by the Working Model of the Child Interview at 6 months post-partum. Maternal interactive behavior was evaluated at 6 and 24 months post-partum, using the National Institute of Child Health and Human Development Early Care Research Network mother-infant observation scales. Infant attachment was observed at 24 months post-partum and was coded by the Attachment Q-Set. The results reveal that a premature childbirth does not necessarily generate disrupted maternal representations of the infant. Furthermore, maternal interactive behavior appears to be an important mechanism through which maternal representations influence the development of infant attachment in full-term and preterm infants. Early assessment of maternal representations can identify mother-infant dyads at risk, in full-term and preterm samples.

Disruptive Behavior Disorders in Children 0 to 6 Years Old.

Science.gov (United States)

Tandon, Mini; Giedinghagen, Andrea

2017-07-01

Disruptive behavior disorders (DBDs), specifically oppositional defiant disorder and conduct disorder, are common, serious, and treatable conditions among preschoolers. DBDs are marked by frequent aggression, deceitfulness, and defiance, and often persist through the lifespan. Exposure to harsh or inconsistent parenting, as frequently seen with parental depression and stress, increases DBD risk. Candidate genes that may increase DBD risk in the presence of childhood adversity have also been identified, but more research is needed. Neurophysiologic and structural correlates with DBD also exist. Parent management training programs, focusing on increasing parenting competence and confidence, are the gold standard treatment of preschool DBDs. Copyright © 2017 Elsevier Inc. All rights reserved.

Specificity of Reward Sensitivity and Parasympathetic-Based Regulation among Children with Attention-Deficit/Hyperactivity and Disruptive Behavior Disorders.

Science.gov (United States)

Tenenbaum, Rachel B; Musser, Erica D; Raiker, Joseph S; Coles, Erika K; Gnagy, Elizabeth M; Pelham, William E

2018-07-01

Attention-deficit/hyperactivity disorder (ADHD) is associated with disruptionsin reward sensitivity and regulatory processes. However, it is unclear whether thesedisruptions are better explained by comorbid disruptive behavior disorder (DBD)symptomology. This study sought to examine this question using multiple levels ofanalysis (i.e., behavior, autonomic reactivity). One hundred seventeen children (aged 6 to 12 years; 72.6% male; 69 with ADHD) completed theBalloon-Analogue Risk Task (BART) to assess external reward sensitivity behaviorally.Sympathetic-based internal reward sensitivity and parasympathetic-based regulationwere indexed via cardiac pre-ejection period (PEP) and respiratory sinus arrhythmia(RSA), respectively. Children with ADHD exhibited reduced internal reward sensitivity (i.e.,lengthened PEP; F(1,112)=4.01, p=0.047) compared to healthy controls and werecharacterized by greater parasympathetic-based dysregulation (i.e., reduced RSAaugmentation F(1,112)=10.12, p=0.002). However, follow-up analyses indicated theADHD effect was better accounted for by comorbid DBD diagnoses; that is, childrenwith ADHD and comorbid ODD were characterized by reduced internal rewardsensitivity (i.e., lengthened PEP; t=2.47, p=0.046) and by parasympathetic-baseddysregulation (i.e., reduced RSA augmentation; t=3.51, p=0.002) in response to rewardwhen compared to typically developing youth. Furthermore, children with ADHD and comorbid CD exhibited greater behaviorally-based external reward sensitivity (i.e.,more total pops; F(3,110)= 5.96, p=0.001) compared to children with ADHD only (t=3.87, p=0.001) and children with ADHD and ODD (t=3.56, p=0.003). Results suggest that disruptions in sensitivity to reward may be betteraccounted for, in part, by comorbid DBD.Key Words: attention-deficit/hyperactivity disorder, autonomic nervous system,disruptive behavior disorders, reward sensitivityPowered.

Plasma disruption modeling and simulation

International Nuclear Information System (INIS)

Hassanein, A.

1994-01-01

Disruptions in tokamak reactors are considered a limiting factor to successful operation and reliable design. The behavior of plasma-facing components during a disruption is critical to the overall integrity of the reactor. Erosion of plasma facing-material (PFM) surfaces due to thermal energy dump during the disruption can severely limit the lifetime of these components and thus diminish the economic feasibility of the reactor. A comprehensive understanding of the interplay of various physical processes during a disruption is essential for determining component lifetime and potentially improving the performance of such components. There are three principal stages in modeling the behavior of PFM during a disruption. Initially, the incident plasma particles will deposit their energy directly on the PFM surface, heating it to a very high temperature where ablation occurs. Models for plasma-material interactions have been developed and used to predict material thermal evolution during the disruption. Within a few microseconds after the start of the disruption, enough material is vaporized to intercept most of the incoming plasma particles. Models for plasma-vapor interactions are necessary to predict vapor cloud expansion and hydrodynamics. Continuous heating of the vapor cloud above the material surface by the incident plasma particles will excite, ionize, and cause vapor atoms to emit thermal radiation. Accurate models for radiation transport in the vapor are essential for calculating the net radiated flux to the material surface which determines the final erosion thickness and consequently component lifetime. A comprehensive model that takes into account various stages of plasma-material interaction has been developed and used to predict erosion rates during reactor disruption, as well during induced disruption in laboratory experiments

Onset and Progression of Disruptive Behavior Problems among Community Boys and Girls: A Prospective Longitudinal Analysis

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Farris, Jaelyn R.; Nicholson, Jody S.; Borkowski, John G.; Whitman, Thomas L.

2011-01-01

Attention-deficit/hyperactivity disorder, oppositional defiant disorder, and conduct disorder are the most common forms of psychopathology seen among community youth. This study investigated prospective symptomatology of these disruptive behavior disorders from ages 5 though 14 in an at-risk community-based sample of 170 boys and girls born to…

Fuel disruption mechanisms determined in-pile in the ACRR

International Nuclear Information System (INIS)

Wright, S.A.; Fischer, E.A.

1984-09-01

Over thirty in-pile experiments were performed to investigate fuel disruption behavior for LMFBR loss of flow (LOF) accidents. These experiments reproduced the heating transients for a variety of accidents ranging from slow LOF accidents to rapid LOF-driven-TOP accidents. In all experiments the timing and mode of the fuel disruption were observed with a high speed camera, enabling detailed comparisons with a fuel pin code, SANDPIN. This code transient intra- and inter-granular fission gas behavior to predict the macroscopic fuel behavior, such as fission gas induced swelling and frothing, cracking and breakup of solid fuel, and fuel vapor pressure driven dispersal. This report reviews the different modes of fuel disruption as seen in the experiments and then describes the mechanism responsible for the disruption. An analysis is presented that describes a set of conditions specifying the mode of fuel disruption and the heating conditions required to produce the disruption. The heating conditions are described in terms of heating rate (K/s), temperature gradient, and fuel temperature. A fuel disruption map is presented which plots heating rate as a function of fuel temperature to illustrate the different criteria for disruption. Although this approach to describing fuel disruption oversimplifies the fission gas processes modeled by SANDPIN, it does illustrate the criteria used to determine which fuel disruption mechanism is dominant and on what major fission gas parameters it depends

Overview of core disruptive accidents

International Nuclear Information System (INIS)

Marchaterre, J.F.

1977-01-01

An overview of the analysis of core-disruptive accidents is given. These analyses are for the purpose of understanding and predicting fast reactor behavior in severe low probability accident conditions, to establish the consequences of such conditions and to provide a basis for evaluating consequence limiting design features. The methods are used to analyze core-disruptive accidents from initiating event to complete core disruption, the effects of the accident on reactor structures and the resulting radiological consequences are described

Parents' Education, Personality, and Their Children's Disruptive Behaviour

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Purwati; Japar, Muhammad

2017-01-01

The aims of this study were (1) to understand the effects of parents' education and personality aspects on child disruptive behavior, (2) to know the correlation between the parents' personality aspects (N-Deference, N-Succorance, N-Dominance and N-Aggression) and the children' disruptive behavior. A quantitative approach to the correlational…

Tributyltin impaired reproductive success in female zebrafish through disrupting oogenesis, reproductive behaviors and serotonin synthesis.

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Xiao, Wei-Yang; Li, Ying-Wen; Chen, Qi-Liang; Liu, Zhi-Hao

2018-07-01

Tributyltin (TBT), an organotin acting as aromatase (Cyp19a1) inhibitor, has been found to disrupt gametogenesis and reproductive behaviors in several fish species. However, few studies addressing the mechanisms underlying the impaired gametogenesis and reproduction have been reported. In this study, female adults of zebrafish (Danio rerio) were continuously exposed to two nominal concentrations of TBT (100 and 500 ng/L, actual concentrations: 90.8 ± 1.3 ng/L and 470.3 ± 2.7 ng/L, respectively) for 28 days. After exposures, TBT decreased the total egg number, reduced the hatchability and elevated the mortality of the larvae. Decreased gonadosomatic index (GSI) and altered percentages of follicles in different developmental stages (increased early-stage follicles and reduced mid/late-stage follicles) were also observed in the ovary of TBT-treated fish. TBT also lowered the plasma level of 17β-estradiol and suppressed the expressions of cyp19a1a in the ovary. In treated fish, up-regulated expressions of aldhla2, sycp3 and dmc1 were present in the ovary, indicating an enhanced level of meiosis. The mRNA level of vtg1 was dramatically suppressed in the liver of TBT-treated fish, suggesting an insufficient synthesis of Vtg protein, consistent with the decreased percentage of mid/late-stage follicles in the ovaries. Moreover, TBT significantly suppressed the reproductive behaviors of the female fish (duration of both sexes simultaneously in spawning area, the frequency of meeting and the visit in spawning area) and down-regulated the mRNA levels of genes involved in the regulation of reproductive behaviors (cyp19a1b, gnrh-3 and kiss 2) in the brain. In addition, TBT significantly suppressed the expressions of serotonin-related genes, such as tph2 (encoding serotonin synthase), pet1 (marker of serotonin neuron) and kiss 1 (the modulator of serotonin synthesis), suggesting that TBT might disrupt the non-reproductive behaviors of zebrafish. The present

ADHD with comorbid oppositional defiant disorder or conduct disorder: discrete or nondistinct disruptive behavior disorders?

Science.gov (United States)

Connor, Daniel F; Doerfler, Leonard A

2008-09-01

In children with ADHD who have comorbid disruptive behavior diagnoses distinctions between oppositional defiant disorder (ODD) and conduct disorder (CD) remain unclear. The authors investigate differences between ODD and CD in a large clinical sample of children with ADHD. Consecutively referred and systematically assessed male children and adolescents with either ADHD (n = 65), ADHD with ODD (n = 85), or ADHD with CD (n = 50) were compared using structured diagnostic interviews and parent, teacher, and clinician rating scales. In children with ADHD, significant differences emerged between ODD and CD in the domains of delinquency, overt aggression, and ADHD symptom severity; ADHD with CD was most severe, followed by ADHD with ODD, and ADHD had the least severe symptoms. Distinctions between ADHD with CD and the other two groups were found for parenting, treatment history, and school variables. Within the limits of a cross-sectional methodology, results support clinically meaningful distinctions between ODD and CD in children with ADHD.

Enhanced eyeblink conditioning in behaviorally inhibited individuals is disrupted by proactive interference following US alone pre-exposures.

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Michael Todd Allen

2016-03-01

Full Text Available Anxiety vulnerable individuals exhibit enhanced acquisition of conditioned eyeblinks as well as enhanced proactive interference from CS or US alone pre-exposures (Holloway et al., 2012. US alone pre-exposures disrupt subsequent CR acquisition to CS-US paired trials as compared to context pre-exposure controls. While Holloway et al., (2012 reported enhanced acquisition in high trait anxiety individuals in the context condition, anxiety vulnerability effects were not reported for the US alone pre-exposure group. It appears from the published data that there were no differences between high and low anxiety individuals in the US alone condition. In the work reported here, we sought to extend the findings of enhanced proactive interference with US alone pre-exposures to determine if the enhanced conditioning was disrupted by proactive interference procedures. We also were interested in the spontaneous eyeblinks during the pre-exposure phase of training. We categorized individuals as anxiety vulnerability or non-vulnerable individuals based scores on the Adult Measure of Behavioural Inhibition (AMBI. Sixty six participants received 60 trials consisting of 30 US alone or context alone pre-exposures followed by 30 CS-US trials. US alone pre-exposures not only disrupted CR acquisition overall, but behaviorally inhibited (BI individuals exhibited enhanced proactive interference as compared to non-inhibited (NI individuals. In addition, US alone pre-exposures disrupted the enhanced acquisition observed in BI individuals as compared to NI individuals following context alone pre-exposures. Differences were also found in rates of spontaneous eyeblinks between BI and NI individuals during context pre-exposure. Our findings will be discussed in the light of the neural substrates of eyeblink conditioning as well as possible factors such as hypervigilance in the amygdala and hippocampal systems, and possible learned helplessness. Applications of these findings of

The use of the coping power program to treat a 10-year-old girl with disruptive behaviors.

Science.gov (United States)

Lochman, John E; Boxmeyer, Caroline; Powell, Nicole; Wojnaroski, Mary; Yaros, Anna

2007-01-01

This article describes the successful application of the Coping Power program by school-based clinicians to address a 10-year-old girl's disruptive behavior symptoms. Coping Power is an empirically supported cognitive-behavioral program for children at risk for serious conduct problems and their parents. The following case study illustrates the core features of the Coping Power child and parent components while describing the use of assessment data and clinical decision making during the implementation of a manualized intervention.

Prompts to disrupt sitting time and increase physical activity at work, 2011-2012.

Science.gov (United States)

Swartz, Ann M; Rote, Aubrianne E; Welch, Whitney A; Maeda, Hotaka; Hart, Teresa L; Cho, Young Ik; Strath, Scott J

2014-05-01

The objective of this study was to assess change in sitting and physical activity behavior in response to a workplace intervention to disrupt prolonged sitting time. Sixty office workers were randomized to either a Stand group (n = 29), which received hourly prompts (computer-based and wrist-worn) to stand up, or a Step group (n = 31), which received the same hourly prompts and an additional prompt to walk 100 steps or more upon standing. An ActivPAL monitor was used to assess sitting and physical activity behavior on the same 3 consecutive workdays during baseline and intervention periods. Mixed-effect models with random intercepts and random slopes for time were performed to assess change between groups and across time. Both groups significantly reduced duration of average sitting bouts (Stand group, by 16%; Step group, by 19%) and the number of sitting bouts of 60 minutes or more (Step group, by 36%; Stand group, by 54%). The Stand group significantly reduced total sitting time (by 6.6%), duration of the longest sitting bout (by 29%), and number of sitting bouts of 30 minutes or more (by 13%) and increased the number of sit-to-stand transitions (by 15%) and standing time (by 23%). Stepping time significantly increased in the Stand (by 14%) and Step (by 29%) groups, but only the Step group significantly increased (by 35%) the number of steps per workday. Differences in changes from baseline to intervention between groups were not significant for any outcome. Interventions that focus on disrupting sitting time only in the workplace may result in less sitting. When sitting time disruptions are paired with a physical activity prompt, people may be more likely to increase their workday physical activity, but the effect on sitting time may be attenuated.

A randomized, controlled, crossover trial of fish oil treatment for impulsive aggression in children and adolescents with disruptive behavior disorders.

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Dean, Angela J; Bor, William; Adam, Kareen; Bowling, Francis G; Bellgrove, Mark A

2014-04-01

Epidemiological research links aggression to low serum concentrations of omega-3 fatty acids, such as those found in fish oil. However, no studies have specifically examined whether fish oil supplementation can reduce the frequency and severity of impulsive aggression in children with disruptive behavior disorders. Children presenting with impulsive aggression and meeting research criteria for diagnosis of disruptive behavior disorders were randomized to receive either: 1) Fish oil capsules (4 g daily) for 6 weeks followed by placebo (identical-looking capsules) for 6 weeks; or 2) placebo for 6 weeks, followed by fish oil for 6 weeks, in a double-blind, crossover design. Primary outcomes were the Children's Aggression Scale and the Modified Overt Aggression Scale. Secondary outcomes included emotional and behavioral functioning (Strengths and Difficulties Questionnaire [SDQ]), hyperactivity symptoms (Attention-Deficit/Hyperactivity Disorder [ADHD] Rating Scale), family functioning (Family Assessment Device), and cognitive functioning (Stop Signal Task, Trail-Making Task, and Eriksen Flanker Task). Serum concentrations of omega-3 and omega-6 fatty acids were measured at baseline, and at 6 and 12 weeks. Twenty-one children participated (81% male; mean age 10.3±2.2 years; range 7-14). Fish oil treatment increased serum concentrations of eicosapentanoic acid (F=14.76, pConduct Subscale, F=4.34, p=0.06). Fish oil treatment was associated with an improvement in one rating of hyperactivity (SDQ Hyperactivity Subscale, F=2.22, pchildren with disruptive behavior disorders.

Maternal attitudinal inflexibility: longitudinal relations with mother-infant disrupted interaction and childhood hostile-aggressive behavior problems.

Science.gov (United States)

Najmi, Sadia; Bureau, Jean-Francois; Chen, Diyu; Lyons-Ruth, Karlen

2009-12-01

: The Personal Attitude Scale (PAS; Hooley, 2000) is a method that is under development for identifying individuals high in Expressed Emotion based on personality traits of inflexibility, intolerance, and norm-forming. In the current study, the goal was to measure the association between this maternal attitudinal inflexibility, early hostile or disrupted mother-infant interactions, and hostile-aggressive behavior problems in the child. In a prospective longitudinal study of 76 low-income mothers and their infants, it was predicted that maternal PAS scores, assessed at child age 20, would be related to difficulties in early observed mother-infant interaction and to hostile-aggressive behavioral difficulties in the child. Results indicated that maternal difficulties in interacting with the infant in the laboratory were associated with maternal PAS scores assessed 20 years later. Hostile-aggressive behavior problems in the child at age five were also predictive of PAS scores of mothers. However, contrary to prediction, these behavior problems did not mediate the association between mother-infant interaction difficulties and maternal PAS scores, indicating that the child's hostile-aggressive behavior problems did not produce the link between quality of early interaction and later maternal attitudinal inflexibility. The current results validate the PAS against observable mother-child interactions and child hostile-aggressive behavior problems and indicate the importance of future work investigating the maternal attitudes that are associated with, and may potentially precede, parent-infant interactive difficulties. These findings regarding the inflexible attitudes of mothers whose interactions with their infants are also disrupted have important clinical implications. First, once the stability of the PAS has been established, this measure may offer a valuable screening tool for the prenatal identification of parents at risk for difficult interactions with their children

Child behavior checklist dysregulation profile in children with disruptive behavior disorders: A longitudinal study.

Science.gov (United States)

Masi, Gabriele; Pisano, Simone; Milone, Annarita; Muratori, Pietro

2015-11-01

A Child Behavior Checklist (CBCL) profile defined as Dysregulation Profile (DP) (scores 2 standard deviations or more in anxiety/depression, aggression, attention subscales) has been correlated to poor emotional and behavioral self-regulation. The clinical meaning and the prognostic implications of CBCL-DP are still debated, although it seems associated with severe psychopathology and poor adjustment. In the present study, we used the CBCL-DP score to examine the adolescent outcomes (psychiatric diagnosis, substance use, psychiatric hospitalization) in 80 referred children with disruptive behavior disorders -DBD- (Oppositional Defiant Disorder or conduct disorder), aged 8-9 years, 72 males (90%) and 8 females (10%), followed-up until the age of 14-15 years. Children with higher score on the CBCL-DP profile were at increased risk for presenting ADHD and mood disorders in adolescence. While ADHD in adolescence was predicted also by an ADHD diagnosis during childhood, CBCL-DP score was the only significant predictor of a mood disorder at 14-15 years. On the contrary, CBCL-DP score was not associated with a higher risk of conduct disorder, substance use and hospitalizations in adolescence. A cost-effective and reliable diagnostic measure such as the CBCL may be a part of the diagnostic procedure aimed to capture these at-risk children, to monitor their natural history up to adolescence, and to prevent the risk of a full-blown mood disorder. The small sample size and a selection bias of severe patients with DBD limit the generalization of the findings. Copyright © 2015 Elsevier B.V. All rights reserved.

Music Taste Groups and Problem Behavior.

Science.gov (United States)

Mulder, Juul; Bogt, Tom Ter; Raaijmakers, Quinten; Vollebergh, Wilma

2007-04-01

Internalizing and externalizing problems differ by musical tastes. A high school-based sample of 4159 adolescents, representative of Dutch youth aged 12 to 16, reported on their personal and social characteristics, music preferences and social-psychological functioning, measured with the Youth Self-Report (YSR). Cluster analysis on their music preferences revealed six taste groups: Middle-of-the-road (MOR) listeners, Urban fans, Exclusive Rock fans, Rock-Pop fans, Elitists, and Omnivores. A seventh group of musically Low-Involved youth was added. Multivariate analyses revealed that when gender, age, parenting, school, and peer variables were controlled, Omnivores and fans within the Exclusive Rock groups showed relatively high scores on internalizing YSR measures, and social, thought and attention problems. Omnivores, Exclusive Rock, Rock-Pop and Urban fans reported more externalizing problem behavior. Belonging to the MOR group that highly appreciates the most popular, chart-based pop music appears to buffer problem behavior. Music taste group membership uniquely explains variance in both internalizing and externalizing problem behavior.

Identifying Differences in Cultural Behavior in Online Groups

Energy Technology Data Exchange (ETDEWEB)

Gregory, Michelle L.; Engel, David W.; Bell, Eric B.; Mcgrath, Liam R.

2012-07-23

We have developed methods to identify online communities, or groups, using a combination of structural information variables and content information variables from weblog posts and their comments to build a characteristic footprint for groups. We have worked with both explicitly connected groups and 'abstract' groups, in which the connection between individuals is in interest (as determined by content based features) and behavior (metadata based features) as opposed to explicit links. We find that these variables do a good job at identifying groups, placing members within a group, and helping determine the appropriate granularity for group boundaries. The group footprint can then be used to identify differences between the online groups. In the work described here we are interested in determining how an individual's online behavior is influenced by their membership in more than one group. For example, individuals belong to a certain culture; they may belong as well to a demographic group, and other 'chosen' groups such as churches or clubs. There is a plethora of evidence surrounding the culturally sensitive adoption, use, and behavior on the Internet. In this work we begin to investigate how culturally defined internet behaviors may influence behaviors of subgroups. We do this through a series of experiments in which we analyze the interaction between culturally defined behaviors and the behaviors of the subgroups. Our goal is to (a) identify if our features can capture cultural distinctions in internet use, and (b) determine what kinds of interaction there are between levels and types of groups.

Is It Incivility or Mental Illness? Understanding and Coping with Disruptive Student Behavior in the College Classroom

Science.gov (United States)

McNaughton-Cassill, Mary E.

2013-01-01

Rising rates of incivility in the college classroom can generate stress for both faculty and students. However, incivility can take multiple forms, have different causes and require different management techniques. In some cases disruptive behavior is the result of student faculty interactions, and can be ameliorated by improved communication or…

Disinfection of titanium dioxide nanotubes using super-oxidized water decrease bacterial viability without disrupting osteoblast behavior

Energy Technology Data Exchange (ETDEWEB)

Beltrán-Partida, Ernesto [Department of Biomaterials, Dental Materials and Tissue Engineering, Faculty of Dentistry Mexicali, Autonomous University of Baja California, Av. Zotoluca and Chinampas St., 21040 Mexicali, Baja California (Mexico); Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California (Mexico); Valdez-Salas, Benjamín, E-mail: benval@uabc.edu.mx [Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California (Mexico); Escamilla, Alan; Curiel, Mario [Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California (Mexico); Valdez-Salas, Ernesto [Ixchel Medical Centre, Av. Bravo y Obregón, 21000 Mexicali, Baja California (Mexico); Nedev, Nicola [Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California (Mexico); Bastidas, Jose M. [National Centre for Metallurgical Research, CSIC, Av. Gregorio del Amo 8, 28040 Madrid (Spain)

2016-03-01

Amorphous titanium dioxide (TiO{sub 2}) nanotubes (NTs) on Ti6Al4V alloy were synthesized by anodization using a commercially available super-oxidized water (SOW). The NT surfaces were sterilized by ultraviolet (UV) irradiation and disinfected using SOW. The adhesion and cellular morphology of pig periosteal osteoblast (PPO) cells and the behavior of Staphylococcus aureus (S. aureus) cultured on the sterilized and disinfected surfaces were investigated. A non-anodized Ti6Al4V disc sterilized by UV irradiation (without SOW) was used as control. The results of this study reveal that the adhesion, morphology and filopodia development of PPO cells in NTs are dramatically improved, suggesting that SOW cleaning may not disrupt the benefits obtained by NTs. Significantly decreased bacterial viability in NTs after cleaning with SOW and comparing with non-cleaned NTs was seen. The results suggest that UV and SOW could be a recommendable method for implant sterilization and disinfection without altering osteoblast behavior while decreasing bacterial viability. - Highlights: • The effect of super-oxidized water cleaning was studied on Ti6Al4V nanotubes. • Super oxidized-water cleaning caused a decline in S. aureus viability. • Osteoblast behavior was not disrupted after super-oxidized water disinfection. • Super-oxidized water is suggested as a cleaning protocol for TiO{sub 2} nanotubes.

Disinfection of titanium dioxide nanotubes using super-oxidized water decrease bacterial viability without disrupting osteoblast behavior

International Nuclear Information System (INIS)

Beltrán-Partida, Ernesto; Valdez-Salas, Benjamín; Escamilla, Alan; Curiel, Mario; Valdez-Salas, Ernesto; Nedev, Nicola; Bastidas, Jose M.

2016-01-01

Amorphous titanium dioxide (TiO_2) nanotubes (NTs) on Ti6Al4V alloy were synthesized by anodization using a commercially available super-oxidized water (SOW). The NT surfaces were sterilized by ultraviolet (UV) irradiation and disinfected using SOW. The adhesion and cellular morphology of pig periosteal osteoblast (PPO) cells and the behavior of Staphylococcus aureus (S. aureus) cultured on the sterilized and disinfected surfaces were investigated. A non-anodized Ti6Al4V disc sterilized by UV irradiation (without SOW) was used as control. The results of this study reveal that the adhesion, morphology and filopodia development of PPO cells in NTs are dramatically improved, suggesting that SOW cleaning may not disrupt the benefits obtained by NTs. Significantly decreased bacterial viability in NTs after cleaning with SOW and comparing with non-cleaned NTs was seen. The results suggest that UV and SOW could be a recommendable method for implant sterilization and disinfection without altering osteoblast behavior while decreasing bacterial viability. - Highlights: • The effect of super-oxidized water cleaning was studied on Ti6Al4V nanotubes. • Super oxidized-water cleaning caused a decline in S. aureus viability. • Osteoblast behavior was not disrupted after super-oxidized water disinfection. • Super-oxidized water is suggested as a cleaning protocol for TiO_2 nanotubes.

Why New Spinal Cord Plasticity Does Not Disrupt Old Motor Behaviors.

Science.gov (United States)

Chen, Yi; Chen, Lu; Wang, Yu; Chen, Xiang Yang; Wolpaw, Jonathan R

2017-08-23

When new motor learning changes the spinal cord, old behaviors are not impaired; their key features are preserved by additional compensatory plasticity. To explore the mechanisms responsible for this compensatory plasticity, we transected the spinal dorsal ascending tract before or after female rats acquired a new behavior-operantly conditioned increase or decrease in the right soleus H-reflex-and examined an old behavior-locomotion. Neither spinal dorsal ascending tract transection nor H-reflex conditioning alone impaired locomotion. Nevertheless, when spinal dorsal ascending tract transection and H-reflex conditioning were combined, the rats developed a limp and a tilted posture that correlated in direction and magnitude with the H-reflex change. When the right H-reflex was increased by conditioning, the right step lasted longer than the left and the right hip was higher than the left; when the right H-reflex was decreased by conditioning, the opposite occurred. These results indicate that ascending sensory input guides the compensatory plasticity that normally prevents the plasticity underlying H-reflex change from impairing locomotion. They support the concept of the state of the spinal cord as a negotiated equilibrium that reflects the concurrent influences of all the behaviors in an individual's repertoire; and they support the new therapeutic strategies this concept introduces. SIGNIFICANCE STATEMENT The spinal cord provides a reliable final common pathway for motor behaviors throughout life. Until recently, its reliability was explained by the assumption that it is hardwired; but it is now clear that the spinal cord changes continually as new behaviors are acquired. Nevertheless, old behaviors are preserved. This study shows that their preservation depends on sensory feedback from the spinal cord to the brain: if feedback is removed, the acquisition of a new behavior may disrupt an old behavior. In sum, when a new behavior changes the spinal cord, sensory

Classification of group behaviors in social media via social behavior grammars

Science.gov (United States)

Levchuk, Georgiy; Getoor, Lise; Smith, Marc

2014-06-01

The increasing use of online collaboration and information sharing in the last decade has resulted in explosion of criminal and anti-social activities in online communities. Detection of such behaviors are of interest to commercial enterprises who want to guard themselves from cyber criminals, and the military intelligence analysts who desire to detect and counteract cyberwars waged by adversarial states and organizations. The most challenging behaviors to detect are those involving multiple individuals who share actions and roles in the hostile activities and individually appear benign. To detect these behaviors, the theories of group behaviors and interactions must be developed. In this paper we describe our exploration of the data from collaborative social platform to categorize the behaviors of multiple individuals. We applied graph matching algorithms to explore consistent social interactions. Our research led us to a conclusion that complex collaborative behaviors can be modeled and detected using a concept of group behavior grammars, in a manner analogous to natural language processing. These grammars capture constraints on how people take on roles in virtual environments, form groups, and interact over time, providing the building blocks for scalable and accurate multi-entity interaction analysis and social behavior hypothesis testing.

Predicting Negative Life Outcomes from Early Aggressive-Disruptive Behavior Trajectories: Gender Differences in Maladaptation across Life Domains

Science.gov (United States)

Bradshaw, Catherine P.; Schaeffer, Cindy M.; Petras, Hanno; Ialongo, Nicholas

2010-01-01

Transactional theories of development suggest that displaying high levels of antisocial behavior early in life and persistently over time causes disruption in multiple life domains, which in turn places individuals at risk for negative life outcomes. We used longitudinal data from 1,137 primarily African American urban youth (49.1% female) to…

Sexual behavior in pregnancy: comparing between sexual education group and nonsexual education group.

Science.gov (United States)

Wannakosit, Salakjit; Phupong, Vorapong

2010-10-01

Sexuality usually decreases during pregnancy. To evaluate sexual behavior during pregnancy, comparing two groups. One had sexual education and the other had none. After randomizing two groups of pregnant women, they completed self-administered questionnaires regarding attitudes and sexual behavior before and during pregnancy. Sexual education was provided in one group and a second self-administered questionnaire was completed 12 weeks later. Responses were summarized using descriptive statistics. Comparison of change of sexual behavior between two groups was analyzed using chi-square and student t-tests. The change in frequency of coitus during pregnancy was compared between the sexual education group and the noneducation group. There was no statistically difference in changes of sexual behavior between the two groups. There was a reduction in frequency of coitus (90.6% vs. 94.9%, P>0.05) between the nonsexual education group and the sexual education group and no statistically significant change in mean reduction of sexual desire (8.9 vs. 4.4, P>0.05), sexual arousal (14.3 vs. 13.1, P>0.05), satisfaction from coitus (15.4 vs. 7.2, P>0.05), and orgasm from coitus (12.3 vs. 12.3, P>0.05). The change of sexual behavior during pregnancy in the sexual education group was not different from that in the nonsexual education group. © 2010 International Society for Sexual Medicine.

Bone mineral density in male adolescents with autism spectrum disorders and disruptive behavior disorder with or without antipsychotic treatment

NARCIS (Netherlands)

Roke, Yvette; van Harten, Peter N.; Buitelaar, Jan K.; Tenback, Diederik E.; Quekel, Lorentz G. B. A.; de Rijke, Yolanda B.; Boot, Annemieke M.

2012-01-01

Objective: To investigate the long-term effects of antipsychotic (AP) treatment and AP-induced hyperprolactinemia on bone mineral density (BMD) and body composition in male adolescents with autism spectrum disorders (ASDs) and/or disruptive behavior disorder (DBD). Design: Physically healthy 10- to

Parent Report of ADHD Symptoms of Early Adolescents: A Confirmatory Factor Analysis of the Disruptive Behavior Disorders Scale

Science.gov (United States)

Van Eck, Kathryn; Finney, Sara J.; Evans, Steven W.

2010-01-01

The Disruptive Behavior Disorders (DBD) scale includes the "Diagnostic and Statistical Manual of Mental Disorders" (4th ed.) criteria for attention deficit hyperactivity disorder (ADHD), oppositional defiant disorder, and conduct disorder. This study examined only the ADHD items of the DBD scale. This scale is frequently used for assessing parent-…

Neonatal disruption of serine racemase causes schizophrenia-like behavioral abnormalities in adulthood: clinical rescue by d-serine.

Directory of Open Access Journals (Sweden)

Hiroko Hagiwara

Full Text Available D-Serine, an endogenous co-agonist of the N-methyl-D-aspartate (NMDA receptor, is synthesized from L-serine by serine racemase (SRR. Given the role of D-serine in both neurodevelopment and the pathophysiology of schizophrenia, we examined whether neonatal disruption of D-serine synthesis by SRR inhibition could induce behavioral abnormalities relevant to schizophrenia, in later life.Neonatal mice (7-9 days were injected with vehicle or phenazine methosulfate (Met-Phen: 3 mg/kg/day, an SRR inhibitor. Behavioral evaluations, such as spontaneous locomotion, novel object recognition test (NORT, and prepulse inhibition (PPI were performed at juvenile (5-6 weeks old and adult (10-12 weeks old stages. In addition, we tested the effects of D-serine on PPI deficits in adult mice after neonatal Met-Phen exposure. Finally, we assessed whether D-serine could prevent the onset of schizophrenia-like behavior in these mice. Neonatal Met-Phen treatment reduced D-serine levels in the brain, 24 hours after the final dose. Additionally, this treatment caused behavioral abnormalities relevant to prodromal symptoms in juveniles and to schizophrenia in adults. A single dose of D-serine improved PPI deficits in adult mice. Interestingly, chronic administration of D-serine (900 mg/kg/day from P35 to P70 significantly prevented the onset of PPI deficits after neonatal Met-Phen exposure.This study shows that disruption of D-serine synthesis during developmental stages leads to behavioral abnormalities relevant to prodromal symptoms and schizophrenia, in later life. Furthermore, early pharmacological intervention with D-serine may prevent the onset of psychosis in adult.

Testing the Efficacy of INSIGHTS on Student Disruptive Behavior, Classroom Management, and Student Competence in Inner City Primary Grades

OpenAIRE

McClowry, Sandra Graham; Snow, David L.; Tamis-LeMonda, Catherine S.; Rodriguez, Eileen T.

2009-01-01

A prevention trial tested the efficacy of INSIGHTS into Children?s Temperament as compared to a Read Aloud attention control condition in reducing student disruptive behavior and enhancing student competence and teacher classroom management. Participants included 116 first and second grade students, their parents, and their 42 teachers in six inner city schools. Teachers completed the Sutter-Eyberg Student Behavior Inventory (SESBI) and the Teacher?s Rating Scale of Child?s Actual Competence ...

Group rational-emotive and cognitive-behavioral therapy.

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Ellis, A

1992-01-01

The theory of rational-emotive therapy (RET) and of cognitive-behavioral therapy (CBT) is briefly explained and is applied to group therapy. It is shown how RET and CBT therapy groups deal with transference, countertransference, levels of group intervention, process versus content orientation, identifying underlying group process themes, here-and-now activation, working with difficult group members, activity levels of therapist and group members, and other group problems. Although they particularly concentrate on people's tendencies to construct and create their own "emotional" difficulties, RET and CBT group procedures fully acknowledge the interactions of human thoughts, feelings, and actions and active-directively employ a variety of cognitive, emotive, and behavioral group therapy techniques.

Using mobile health technology to improve behavioral skill implementation through homework in evidence-based parenting intervention for disruptive behavior disorders in youth: study protocol for intervention development and evaluation.

Science.gov (United States)

Chacko, Anil; Isham, Andrew; Cleek, Andrew F; McKay, Mary M

2016-01-01

Disruptive behavior disorders (DBDs) (oppositional defiant disorder (ODD) and conduct disorder (CD)) are prevalent, costly, and oftentimes chronic psychiatric disorders of childhood. Evidence-based interventions that focus on assisting parents to utilize effective skills to modify children's problematic behaviors are first-line interventions for the treatment of DBDs. Although efficacious, the effects of these interventions are often attenuated by poor implementation of the skills learned during treatment by parents, often referred to as between-session homework. The multiple family group (MFG) model is an evidence-based, skills-based intervention model for the treatment of DBDs in school-age youth residing in urban, socio-economically disadvantaged communities. While data suggest benefits of MFG on DBD behaviors, similar to other skill-based interventions, the effects of MFG are mitigated by the poor homework implementation, despite considerable efforts to support parents in homework implementation. This paper focuses on the study protocol for the development and preliminary evaluation of a theory-based, smartphone mobile health (mHealth) application (My MFG) to support homework implementation by parents participating in MFG. This paper describes a study design proposal that begins with a theoretical model, uses iterative design processes to develop My MFG to support homework implementation in MFG through a series of pilot studies, and a small-scale pilot randomised controlled trial to determine if the intervention can demonstrate change (preliminary efficacy) of My MFG in outpatient mental health settings in socioeconomically disadvantaged communities. This preliminary study aims to understand the implementation of mHealth methods to improve the effectiveness of evidence-based interventions in routine outpatient mental health care settings for youth with disruptive behavior and their families. Developing methods to augment the benefits of evidence

School-based intervention for childhood disruptive behavior in disadvantaged settings: a randomized controlled trial with and without active teacher support.

Science.gov (United States)

Liber, Juliette M; De Boo, Gerly M; Huizenga, Hilde; Prins, Pier J M

2013-12-01

In this randomized controlled trial, we investigated the effectiveness of a school-based targeted intervention program for disruptive behavior. A child-focused cognitive behavioral therapy (CBT) program was introduced at schools in disadvantaged settings and with active teacher support (ATS) versus educational teacher support (ETS) (CBT + ATS vs. CBT + ETS). Screening (n = 1,929) and assessment (n = 224) led to the inclusion of 173 children ages 8-12 years from 17 elementary schools. Most of the children were boys (n = 136, 79%) of low or low-to-middle class socioeconomic status (87%); the sample was ethnically diverse (63% of non-Western origin). Children received CBT + ATS (n = 29) or CBT + ETS (n = 41) or were entered into a waitlist control condition (n = 103) to be treated afterward (CBT + ATS, n = 39, and CBT + ETS, n = 64). Effect sizes (ES), clinical significance (reliable change), and the results of multilevel modeling are reported. Ninety-seven percent of children completed treatment. Teachers and parents reported positive posttreatment effects (mean ES = .31) for CBT compared with the waitlist control condition on disruptive behavior. Multilevel modeling showed similar results. Clinical significance was modest. Changes had remained stable or had increased at 3-months follow-up (mean ES = .39). No consistent effect of teacher condition was found at posttreatment; however, at follow-up, children who received ETS fared significantly better. This study shows that a school-based CBT program is beneficial for difficult-to-reach children with disruptive behavior: The completion rate was remarkably high, ESs (mean ES = .31) matched those of previous studies with targeted intervention, and effects were maintained or had increased at follow-up.

Understanding and managing sleep disruption in children with fetal alcohol spectrum disorder.

Science.gov (United States)

Hanlon-Dearman, Ana; Chen, Maida Lynn; Olson, Heather Carmichael

2018-04-01

Accumulating evidence has revealed high rates of sleep disruption among children with fetal alcohol spectrum disorder (FASD). Multiple animal and clinical studies have found a clear association between sleep problems and prenatal alcohol exposure, and recent research is beginning to characterize the types and extent of sleep disruption in FASD. Nevertheless, sleep disruption in children with FASD often goes unrecognized or is treated without referring to an evidence base. Children's disrupted sleep interferes with parental sleep and increases caregiver burden, which is of particular importance for families raising children with FASD, a group with very high levels of caregiving stress. The literature supporting an association between sleep problems and deficits in emotional, behavioral, and cognitive function in children is compelling, but needs further investigation in children with FASD. This paper will review the current state of knowledge on sleep in FASD and recommend a rational approach to sleep interventions for affected children and their families.

Executive Functions and Child Problem Behaviors Are Sensitive to Family Disruption: A Study of Children of Mothers Working Overseas

Science.gov (United States)

Hewage, Chandana; Bohlin, Gunilla; Wijewardena, Kumudu; Lindmark, Gunilla

2011-01-01

Mothers in Sri Lanka are increasingly seeking overseas employment, resulting in disruption of the childcare environment. The present study was designed to evaluate the effects of maternal migration on executive function (EF) and behavior, thereby also contributing to the scientific understanding of environmental effects--or more specifically…

Using mobile health technology to improve behavioral skill implementation through homework in evidence-based parenting intervention for disruptive behavior disorders in youth: study protocol for intervention development and evaluation

OpenAIRE

Chacko, Anil; Isham, Andrew; Cleek, Andrew F.; McKay, Mary M.

2016-01-01

Background Disruptive behavior disorders (DBDs) (oppositional defiant disorder (ODD) and conduct disorder (CD)) are prevalent, costly, and oftentimes chronic psychiatric disorders of childhood. Evidence-based interventions that focus on assisting parents to utilize effective skills to modify children?s problematic behaviors are first-line interventions for the treatment of DBDs. Although efficacious, the effects of these interventions are often attenuated by poor implementation of the skills ...

The Trouble with Boys: Social Influences and the Gender Gap in Disruptive Behavior. NBER Working Paper No. 17541

Science.gov (United States)

Bertrand, Marianne; Pan, Jessica

2011-01-01

This paper explores the importance of the home and school environments in explaining the gender gap in disruptive behavior. We document large differences in the gender gap across key features of the home environment--boys do especially poorly in broken families. In contrast, we find little impact of the early school environment on non-cognitive…

Observations of Student Behavior in Collaborative Learning Groups

Science.gov (United States)

Adams, Jeffrey P.; Brissenden, Gina; Lindell, Rebecca S.; Slater, Timothy F.; Wallace, Joy

In an effort to determine how our students were responding to the use of collaborative learning groups in our large enrollment introductory astronomy (ASTRO 101) courses, we systematically observed the behavior of 270 undergraduate students working in 48 self-formed groups. Their observed behaviors were classified as: (i) actively engaged; (ii) watching actively; (iii) watching passively; and (iv) disengaged. We found that male behavior is consistent regardless of the sex-composition of the groups. However, females were categorized as watching passively and or disengaged significantly more frequently when working in groups that contained uneven numbers of males and females. This case study observation suggests that faculty who use collaborative learning groups might find that the level of student participation in collaborative group learning activities can depend on the sex-composition of the group.

Which dimension of parenting predicts the change of callous unemotional traits in children with disruptive behavior disorder?

Science.gov (United States)

Muratori, Pietro; Lochman, John E; Lai, Elisa; Milone, Annarita; Nocentini, Annalaura; Pisano, Simone; Righini, Elisabetta; Masi, Gabriele

2016-08-01

Several studies suggested that in addition to child-driven factors (i.e., temperamental style), parenting behavior can, at least in part, influence the maintenance of Callous Unemotional (CU) traits in children; however, more information is needed to distinguish which styles (negative parenting or lack of positive parenting) predict increased levels of CU traits. The aim of the present treatment study was to examine which components of parenting are longitudinally associated with levels of CU traits in children with a disruptive behavior disorder diagnosis. The current study examined cross-lagged reciprocal effects models between positive and negative parenting practices, and the levels of child CU traits over three time points, including both positive and negative dimensions of parenting in the same model. Participants were 126 Italian children with diagnosis of disruptive behavior disorder (oppositional defiant disorder or conduct disorder), 113 boys and 13 girls, 110 Caucasian, 48 with conduct disorder, and 78 with oppositional defiant disorder, treated with a multi-component intervention, based on cognitive behavioral principles and practices. Participants were all 9-10 years of age at the beginning of the study, and were followed-up until the age of 11-12 years (24 months in total, the first 12 under treatment) using parent report (Alabama Parenting Questionnaire and Child Behavior Check List) and child report (Inventory of Callous-Unemotional Traits) measures. No significant cross-lagged path was found between negative parenting and CU traits; these two variables were also unrelated when positive parenting was considered in the same model. In contrast, reciprocal effects between positive parenting and CU were found: higher levels of positive parenting predicted lower levels of CU traits. The current findings suggest that the positive dimension of parenting may need to be targeted in the treatment of DBD children with higher CU traits. Copyright © 2016

From evolution to revolution: understanding mutability in large and disruptive human groups

Science.gov (United States)

Whitaker, Roger M.; Felmlee, Diane; Verma, Dinesh C.; Preece, Alun; Williams, Grace-Rose

2017-05-01

Over the last 70 years there has been a major shift in the threats to global peace. While the 1950's and 1960's were characterised by the cold war and the arms race, many security threats are now characterised by group behaviours that are disruptive, subversive or extreme. In many cases such groups are loosely and chaotically organised, but their ideals are sociologically and psychologically embedded in group members to the extent that the group represents a major threat. As a result, insights into how human groups form, emerge and change are critical, but surprisingly limited insights into the mutability of human groups exist. In this paper we argue that important clues to understand the mutability of groups come from examining the evolutionary origins of human behaviour. In particular, groups have been instrumental in human evolution, used as a basis to derive survival advantage, leaving all humans with a basic disposition to navigate the world through social networking and managing their presence in a group. From this analysis we present five critical features of social groups that govern mutability, relating to social norms, individual standing, status rivalry, ingroup bias and cooperation. We argue that understanding how these five dimensions interact and evolve can provide new insights into group mutation and evolution. Importantly, these features lend themselves to digital modeling. Therefore computational simulation can support generative exploration of groups and the discovery of latent factors, relevant to both internal group and external group modelling. Finally we consider the role of online social media in relation to understanding the mutability of groups. This can play an active role in supporting collective behaviour, and analysis of social media in the context of the five dimensions of group mutability provides a fresh basis to interpret the forces affecting groups.

Leader Behaviors, Group Cohesion, and Participation in a Walking Group Program.

Science.gov (United States)

Izumi, Betty T; Schulz, Amy J; Mentz, Graciela; Israel, Barbara A; Sand, Sharon L; Reyes, Angela G; Hoston, Bernadine; Richardson, Dawn; Gamboa, Cindy; Rowe, Zachary; Diaz, Goya

2015-07-01

Less than half of all U.S. adults meet the 2008 Physical Activity Guidelines. Leader behaviors and group cohesion have been associated with increased participation or adherence in sports team and exercise class settings. Physical activity interventions in community settings that encompass these factors may enhance intervention adherence. The purpose of this study is to examine the impact of Community Health Promoter leader behaviors and group cohesion on participation in a walking group intervention among racially/ethnically diverse adults in low to moderate-income communities in Detroit, Michigan. Data for the current study were drawn from the Walk Your Heart to Health (WYHH) data set. WYHH was a multisite cluster RCT with a lagged intervention and outcome measurements at baseline and 4, 8, and 32 weeks. Pooled survey data from both intervention arms were used for the current study. Data were analyzed between August 2013 and October 2014. A total of 603 non-Hispanic black, non-Hispanic white, and Hispanic adults across five cohorts that began the 32-week WYHH intervention between March 2009 and October 2011. The intervention was a 32-week walking group program hosted by community- and faith-based organizations and facilitated by Community Health Promoters. Walking groups met three times per week for 90 minutes per session. To promote participation in or adherence to WYHH, Community Health Promoters used evidence-based strategies to facilitate group cohesion. Group members assumed increasing leadership responsibility for facilitating sessions over time. Participation in WYHH as measured by consistency of attendance. Community Health Promoter leader behaviors were positively associated with participation in WYHH. Social but not task cohesion was significantly associated with consistent participation. Social cohesion may mediate the relationship between leader behaviors and walking group participation. Providing leaders with training to build socially cohesive groups

The Co-Development of Relational Aggression and Disruptive Behavior Symptoms from Late Childhood through Adolescence.

Science.gov (United States)

Aizpitarte, Alazne; Atherton, Olivia E; Robins, Richard W

2017-09-01

Researchers have debated whether relational aggression is a developmentally-normative behavior or a sign of some underlying psychopathology. However, due to the dearth of longitudinal studies, we know little about how relational aggression and more severe forms of disruptive behavior co-develop. The present study examined bidirectional associations between relational aggression and two psychiatric disorders, Oppositional Defiant Disorder (ODD) and Conduct Disorder (CD), using data from a longitudinal study of 674 Mexican-origin youth followed from age 10 to 16. Results showed that individuals who engaged in relational aggression tended to increase over time in ODD and CD symptoms, and conversely, individuals exhibiting symptoms of ODD and CD tended to increase in relational aggression. These findings held for boys and girls, for youth born in Mexico and the U.S., and after controlling for physical aggression. Thus, relational aggression seems to be both a developmentally-normative behavior and a predictor of future mental health problems.

Sleep disruption and the sequelae associated with traumatic brain injury.

Science.gov (United States)

Lucke-Wold, Brandon P; Smith, Kelly E; Nguyen, Linda; Turner, Ryan C; Logsdon, Aric F; Jackson, Garrett J; Huber, Jason D; Rosen, Charles L; Miller, Diane B

2015-08-01

Sleep disruption, which includes a loss of sleep as well as poor quality fragmented sleep, frequently follows traumatic brain injury (TBI) impacting a large number of patients each year in the United States. Fragmented and/or disrupted sleep can worsen neuropsychiatric, behavioral, and physical symptoms of TBI. Additionally, sleep disruption impairs recovery and can lead to cognitive decline. The most common sleep disruption following TBI is insomnia, which is difficulty staying asleep. The consequences of disrupted sleep following injury range from deranged metabolomics and blood brain barrier compromise to altered neuroplasticity and degeneration. There are several theories for why sleep is necessary (e.g., glymphatic clearance and metabolic regulation) and these may help explain how sleep disruption contributes to degeneration within the brain. Experimental data indicate disrupted sleep allows hyperphosphorylated tau and amyloid β plaques to accumulate. As sleep disruption may act as a cellular stressor, target areas warranting further scientific investigation include the increase in endoplasmic reticulum and oxidative stress following acute periods of sleep deprivation. Potential treatment options for restoring the normal sleep cycle include melatonin derivatives and cognitive behavioral therapy. Published by Elsevier Ltd.

Parents’ Education, Personality, and Their Children’s Disruptive Behaviour

OpenAIRE

Purwati; Muhammad Japar

2017-01-01

The aims of this study were (1) to understand the effects of parents' education and personality aspects on child disruptive behavior, (2) to know the correlation between the parents' personality aspects (N-Deference, N-Succorance, NDominance and N-Aggression) and the children' disruptive behavior. A quantitative approach to the correlational design was employed. Three variables were studied, namely parents' education and personality as the independent variables and child dis...

Protest behavior: Individual and group factors

Directory of Open Access Journals (Sweden)

Agadullina E.R.

2014-12-01

Full Text Available Normative and nonnormative collective actions are the consequence of differences in estimation of political situation. The article regards the predictors in selection of normative (participation in meetings, signing petitions, etc. vs. nonnormative (strike, violent actions, etc. forms of protest behavior (perception of unfairness, self-efficacy, social identity, ideas of out-group. The carried out analysis showed that high self-efficacy, idea of out-group members as equal participants of interaction and experiencing of emotion of anger lead to the choice of various normative protest behavior. Low self-efficacy, steady social identity (including politicized identity, experiencing the emotion of contempt to out-group members often lead to choice of nonnormative forms. In conclusion the article regards the link of various predictors with the choice of individual and group forms of protest and analyzes the possible directions for further empirical studies.

Naloxone injections into CA3 disrupt pattern completion associated with relapse from cocaine seeking

Science.gov (United States)

Kirk, Ryan A.; Clark, Jascha K.; Moore, Angela; Keefe, Kristen

2016-01-01

The goal of the present research was to assess the degree to which a pattern completion process operates in cue-induced relapse to cocaine-seeking behavior. Using a novel cue-preference version of the place preference task, rats were administered cocaine or saline, which resulted in a preference for the cocaine-paired cues. After 21 days of abstinence and prior to the preference test, for one group, PBS or naloxone was injected into the CA3 subregion of the hippocampus and for a second group, saline or naloxone was injected systemically. The results indicated that infusions of naloxone into CA3 or systemic injections produced a marked disruption for one and two cues, but had minimal disruptive effect for three or four cues, suggesting that naloxone injections disrupt CA3 function and trigger a deficit in a pattern completion process. Thus, it appears that cue-based activation of the dorsal CA3 might be a critical trigger via a pattern completion process. Based on additional analyses it appears that there is a disruption primarily for object touches for one cue naloxone injections into the CA3 or systemic injections, but no effect on time (spatial context). PMID:26815290

The Relationship between Organizational Citizenship Behavior, Group Cohesiveness and Workplace Deviance Behavior of Turkish Teachers

Science.gov (United States)

Apaydin, Çigdem; Sirin, Hüseyin

2016-01-01

This study aims to develop a structural model for organizational citizenship behavior, group cohesiveness and workplace deviance behavior. The study group consists of 639 Turkish teachers working in primary and secondary public schools. In the study, the "Organizational Citizenship Behavior Scale" and the "Group Cohesiveness…

Prosocial skills may be necessary for better peer functioning in children with symptoms of disruptive behavior disorders

OpenAIRE

Brendan F. Andrade; Dillon T. Browne; Rosemary Tannock

2014-01-01

Children with disruptive behavior disorders experience substantial social challenges; however, the factors that account for (i.e., mediate), or influence (i.e., moderate), peer problems are not well understood. This study tested whether symptoms of Oppositional Defiant Disorder and Conduct Disorder were associated with peer impairment and whether prosocial skills mediated or moderated these associations. Teacher ratings were gathered for 149 children (Mage = 9.09, SD = 1.71, 26% female) refer...

Effect of Group Cognitive-Behavioral Therapy on Depression

Directory of Open Access Journals (Sweden)

F Ranjbar

2010-09-01

Full Text Available Introduction: Depression is the most prevalent psychotic disorder. In order to cure and prevent the recurrence of this disease, it is necessary to gain more information about remedial methods like Group Cognitive- Behavior Therapy. The aim of this study was to investigate the effects of group cognitive-behavioral therapy on the amount of depression on the patients. Methods: This study was experimental and it included both experimental and control group with a pre test. The subjects were selected from patients with mild depression. Their Beck inventory score ranged between 17-20. Patients were randomly divided in two groups. The subjects of experimental group received eight sessions of group cognitive-behavioral therapy. The Beck depression test was completed by the subjects in three phases before the intervention, after the intervention and one month after that. The data was transferred to SPSS program and analyzed. Results: The results indicated a significant difference between the experimental and control group after the intervention at Beck tests (P=0.043. Furthermore, there was a significant difference in the experimental group between the depression score in patients before and after the intervention (p=0.033 and the score of patients before and one month after the intervention (p=0.492. Conclusion: Group Cognitive-Behavioral therapy decreases depression in patients who suffer from mild depression.

Disruption of model-based behavior and learning by cocaine self-administration in rats.

Science.gov (United States)

Wied, Heather M; Jones, Joshua L; Cooch, Nisha K; Berg, Benjamin A; Schoenbaum, Geoffrey

2013-10-01

Addiction is characterized by maladaptive decision-making, in which individuals seem unable to use adverse outcomes to modify their behavior. Adverse outcomes are often infrequent, delayed, and even rare events, especially when compared to the reliable rewarding drug-associated outcomes. As a result, recognizing and using information about their occurrence put a premium on the operation of so-called model-based systems of behavioral control, which allow one to mentally simulate outcomes of different courses of action based on knowledge of the underlying associative structure of the environment. This suggests that addiction may reflect, in part, drug-induced dysfunction in these systems. Here, we tested this hypothesis. This study aimed to test whether cocaine causes deficits in model-based behavior and learning independent of requirements for response inhibition or perception of costs or punishment. We trained rats to self-administer sucrose or cocaine for 2 weeks. Four weeks later, the rats began training on a sensory preconditioning and inferred value blocking task. Like devaluation, normal performance on this task requires representations of the underlying task structure; however, unlike devaluation, it does not require either response inhibition or adapting behavior to reflect aversive outcomes. Rats trained to self-administer cocaine failed to show conditioned responding or blocking to the preconditioned cue. These deficits were not observed in sucrose-trained rats nor did they reflect any changes in responding to cues paired directly with reward. These results imply that cocaine disrupts the operation of neural circuits that mediate model-based behavioral control.

Disrupted Disclosure

DEFF Research Database (Denmark)

Krause Hansen, Hans; Uldam, Julie

appearances become challenged through disruptive disclosures in mediaenvironments characterized by multiple levels of visibility, with companies both observing andbeing observed by civil society groups that criticize them; (c) why and how the mobilization aroundtransparency and ensuing practices...

Group Play Therapy with Sexually Abused Preschool Children: Group Behaviors and Interventions

Science.gov (United States)

Jones, Karyn Dayle

2002-01-01

Group play therapy is a common treatment modality for children who have been sexually abused. Sexually abused preschoolers exhibit different group play therapy behaviors than do nonabused children. Group workers need to be aware of these differences and know the appropriate group interventions. This article describes group play therapy with…

Behavioral and Neural Sustained Attention Deficits in Disruptive Mood Dysregulation Disorder and Attention-Deficit/Hyperactivity Disorder.

Science.gov (United States)

Pagliaccio, David; Wiggins, Jillian Lee; Adleman, Nancy E; Curhan, Alexa; Zhang, Susan; Towbin, Kenneth E; Brotman, Melissa A; Pine, Daniel S; Leibenluft, Ellen

2017-05-01

Disruptive mood dysregulation disorder (DMDD), characterized by severe irritability, and attention-deficit/hyperactivity disorder (ADHD) are highly comorbid. This is the first study to characterize neural and behavioral similarities and differences in attentional functioning across these disorders. Twenty-seven healthy volunteers, 31 patients with DMDD, and 25 patients with ADHD (8 to 18 years old) completed a functional magnetic resonance imaging attention task. Group differences in intra-subject variability in reaction time (RT) were examined. The present functional magnetic resonance imaging analytic approach precisely quantified trial-wise associations between RT and brain activity. Group differences manifested in the relation between RT and brain activity (all regions: p  2.54, partial eta-squared [η p 2 ] > 0.06). Patients with DMDD showed specific alterations in the right paracentral lobule, superior parietal lobule, fusiform gyrus, and cerebellar culmen. In contrast, patients with DMDD and those with ADHD exhibited blunted compensatory increases in activity on long RT trials. In addition, youth with DMDD exhibited increased activity in the postcentral gyrus, medial frontal gyrus, and cerebellar tonsil and declive (all regions: p  2.46, η p 2 > 0.06). Groups in the imaging sample did not differ significantly in intra-subject variability in RT (F 2,79  = 2.664, p = .076, η p 2  = 0.063), although intra-subject variability in RT was significantly increased in youth with DMDD and ADHD when including those not meeting strict motion and accuracy criteria for imaging analysis (F 2,96  = 4.283, p = .017, η p 2  = 0.083). Patients with DMDD exhibited specific alterations in the relation between pre-stimulus brain activity and RT. Patients with DMDD and those with ADHD exhibited similar blunting of compensatory neural activity in frontal, parietal, and other regions. In addition, patients with DMDD showed increased RT variability compared with healthy

Distinctive hippocampal and amygdalar cytoarchitectural changes underlie specific patterns of behavioral disruption following stress exposure in an animal model of PTSD.

Science.gov (United States)

Cohen, Hagit; Kozlovsky, Nitsan; Matar, Michael A; Zohar, Joseph; Kaplan, Zeev

2014-12-01

Alterations in cytoarchitecture and molecular signaling have been observed in adaptive and maladaptive responses to stress and presumably underlie the physiological and behavioral changes observed. The relationship between behavioral responses to stress exposure and changes in cytoarchitecture of subregions of the hippocampus and amygdala was investigated in an animal model of PTSD. Behaviors in elevated plus-maze and acoustic startle response tests were assessed in rats 7 days after exposure to predator scent stress. Brains were harvested 24h later. Neurons from CA1, CA3, and dentate gyrus subregions and basolateral amygdala were reconstructed and subjected to Sholl analysis and spine density estimation. Glucocorticoid receptor, brain-derived neurotrophic factor, phospho-NR1-Ser-889, phospho-GluR1-Ser-845, phospho-calcium/calmodulin dependent protein kinase II-Thy-286, post-synaptic density protein 95 and phospho-CREB-Ser-133 were evaluated in the hippocampus. Data were analyzed by retrospective classification of individual rats into three behavioral response groups. The extent and distribution of changes in the morphology of hippocampal and amygdalar dendrites was significantly associated with stress-induced behavioral response classification. Extreme (PTSD-like) behavioral disruption was associated with extensive neuronal retraction in the hippocampus and proliferation in the amygdala. Neither structure displayed such changes in minimal behavioral responders. Partial behavioral response was associated with identical changes in the hippocampus only. Patterns of change in requisite molecular signaling genes and endophenotypic markers corresponded to the structural and behavioral responses. The extent and distribution of changes in the cytoarchitecture of hippocampal and amygdalar subregions is directly related to the pattern of behavioral response of the individual to stress exposure. Copyright © 2014 Elsevier B.V. and ECNP. All rights reserved.

Adolescent social isolation increases anxiety-like behavior and ethanol intake and impairs fear extinction in adulthood: Possible role of disrupted noradrenergic signaling.

Science.gov (United States)

Skelly, M J; Chappell, A E; Carter, E; Weiner, J L

2015-10-01

Alcohol use disorder, anxiety disorders, and post-traumatic stress disorder (PTSD) are highly comorbid, and exposure to chronic stress during adolescence may increase the incidence of these conditions in adulthood. Efforts to identify the common stress-related mechanisms driving these disorders have been hampered, in part, by a lack of reliable preclinical models that replicate their comorbid symptomatology. Prior work by us, and others, has shown that adolescent social isolation increases anxiety-like behaviors and voluntary ethanol consumption in adult male Long-Evans rats. Here we examined whether social isolation also produces deficiencies in extinction of conditioned fear, a hallmark symptom of PTSD. Additionally, as disrupted noradrenergic signaling may contribute to alcoholism, we examined the effect of anxiolytic medications that target noradrenergic signaling on ethanol intake following adolescent social isolation. Our results confirm and extend previous findings that adolescent social isolation increases anxiety-like behavior and enhances ethanol intake and preference in adulthood. Additionally, social isolation is associated with a significant deficit in the extinction of conditioned fear and a marked increase in the ability of noradrenergic therapeutics to decrease ethanol intake. These results suggest that adolescent social isolation not only leads to persistent increases in anxiety-like behaviors and ethanol consumption, but also disrupts fear extinction, and as such may be a useful preclinical model of stress-related psychopathology. Our data also suggest that disrupted noradrenergic signaling may contribute to escalated ethanol drinking following social isolation, thus further highlighting the potential utility of noradrenergic therapeutics in treating the deleterious behavioral sequelae associated with early life stress. Copyright © 2015 Elsevier Ltd. All rights reserved.

Behaviors of Problem-Solving Groups

National Research Council Canada - National Science Library

Bennis, Warren G

1958-01-01

The results of two studies are contained in this report in summary form. They represent the first parts of a program of research designed to study the effects of change and history on the on the behaviors of problem-solving Groups...

Outcomes and Stages of Child-Centered Play Therapy for a Child with Highly Disruptive Behavior Driven by Self-Concept Issues

Science.gov (United States)

Cochran, Jeff L.; Cochran, Nancy H.; Fuss, Angela; Nordling, William J.

2010-01-01

Children with highly disruptive behavior present problems for their peers and are often a heavy burden to the schools, teachers, counselors, and other adults who care for them. Without successful intervention, such children certainly face lives of high risk, emotional pain, and ever-increasing difficulty; from a humanistic perspective, such an…

Disruptive Behavior Disorders and Marijuana Use: The Role of Depressive Symptoms

Directory of Open Access Journals (Sweden)

Melanie C. Morse

2015-01-01

Full Text Available Objective The present study sought to examine the relations among disruptive behavior disorders (DBDs; ie, attention-deficit/hyperactivity disorder [ADHD], conduct disorder [CD], oppositional defiant disorder [ODD], depressive symptoms, and marijuana use among a sample of late adolescents and emerging adults. Method A total of 900 students (75.8% female, 80.3% Caucasian, M age = 20 from a large public university completed an online survey. Results Findings indicated that depressive symptoms mediated the relation between the marijuana use and past symptoms of ADHD, past diagnosis of ADHD, CD symptoms, CD diagnosis, and ODD diagnosis. Conclusion Depressive symptoms represent a link between DBDs and marijuana use that is suggested, but not well documented in the existing literature. The current findings add to this evidence and suggest a need to assess individuals presenting with symptoms of DBDs for depressive symptoms, as this symptom pattern may result in a greater likelihood of marijuana use.

A risk function for behavioral disruption of Blainville's beaked whales (Mesoplodon densirostris from mid-frequency active sonar.

Directory of Open Access Journals (Sweden)

David Moretti

Full Text Available There is increasing concern about the potential effects of noise pollution on marine life in the world's oceans. For marine mammals, anthropogenic sounds may cause behavioral disruption, and this can be quantified using a risk function that relates sound exposure to a measured behavioral response. Beaked whales are a taxon of deep diving whales that may be particularly susceptible to naval sonar as the species has been associated with sonar-related mass stranding events. Here we derive the first empirical risk function for Blainville's beaked whales (Mesoplodon densirostris by combining in situ data from passive acoustic monitoring of animal vocalizations and navy sonar operations with precise ship tracks and sound field modeling. The hydrophone array at the Atlantic Undersea Test and Evaluation Center, Bahamas, was used to locate vocalizing groups of Blainville's beaked whales and identify sonar transmissions before, during, and after Mid-Frequency Active (MFA sonar operations. Sonar transmission times and source levels were combined with ship tracks using a sound propagation model to estimate the received level (RL at each hydrophone. A generalized additive model was fitted to data to model the presence or absence of the start of foraging dives in 30-minute periods as a function of the corresponding sonar RL at the hydrophone closest to the center of each group. This model was then used to construct a risk function that can be used to estimate the probability of a behavioral change (cessation of foraging the individual members of a Blainville's beaked whale population might experience as a function of sonar RL. The function predicts a 0.5 probability of disturbance at a RL of 150 dBrms re µPa (CI: 144 to 155 This is 15dB lower than the level used historically by the US Navy in their risk assessments but 10 dB higher than the current 140 dB step-function.

Effectively Utilizing the "Behavioral" in Cognitive-Behavioral Group Therapy of Sex Offenders

Science.gov (United States)

Jennings, Jerry L.; Deming, Adam

2013-01-01

Although cognitive-behavioral therapy (CBT) is touted as the predominant approach in sex offender-specific group treatment, a review of the field shows that the "behavioral" part of CBT has become minimal in relation to that which is cognitive. The authors show how a revitalized "behavioral sensibility" may help to enhance…

Cognitive Behavior Therapy: A Comparison of Group and Individual Formats.

Science.gov (United States)

Shaffer, Carolyn S.; And Others

The relative efficacy of both group and individual cognitive behavior therapeutic approaches in treating anxiety and depression are evaluated and then compared to an interpersonal group therapy approach. The two major hypotheses are that group cognitive behavior therapy is at least as effective as individual cognitive behavior therapy, and that…

Short- and long-term health consequences of sleep disruption.

Science.gov (United States)

Medic, Goran; Wille, Micheline; Hemels, Michiel Eh

2017-01-01

Sleep plays a vital role in brain function and systemic physiology across many body systems. Problems with sleep are widely prevalent and include deficits in quantity and quality of sleep; sleep problems that impact the continuity of sleep are collectively referred to as sleep disruptions. Numerous factors contribute to sleep disruption, ranging from lifestyle and environmental factors to sleep disorders and other medical conditions. Sleep disruptions have substantial adverse short- and long-term health consequences. A literature search was conducted to provide a nonsystematic review of these health consequences (this review was designed to be nonsystematic to better focus on the topics of interest due to the myriad parameters affected by sleep). Sleep disruption is associated with increased activity of the sympathetic nervous system and hypothalamic-pituitary-adrenal axis, metabolic effects, changes in circadian rhythms, and proinflammatory responses. In otherwise healthy adults, short-term consequences of sleep disruption include increased stress responsivity, somatic pain, reduced quality of life, emotional distress and mood disorders, and cognitive, memory, and performance deficits. For adolescents, psychosocial health, school performance, and risk-taking behaviors are impacted by sleep disruption. Behavioral problems and cognitive functioning are associated with sleep disruption in children. Long-term consequences of sleep disruption in otherwise healthy individuals include hypertension, dyslipidemia, cardiovascular disease, weight-related issues, metabolic syndrome, type 2 diabetes mellitus, and colorectal cancer. All-cause mortality is also increased in men with sleep disturbances. For those with underlying medical conditions, sleep disruption may diminish the health-related quality of life of children and adolescents and may worsen the severity of common gastrointestinal disorders. As a result of the potential consequences of sleep disruption, health care

Prenatal undernutrition disrupted the sexual maturation, but not the sexual behavior, in male rats.

Science.gov (United States)

Matsuzaki, Toshiya; Munkhzaya, Munkhsaikhan; Tungalagsuvd, Altankhuu; Mayila, Yiliyasi; Iwasa, Takeshi; Yano, Kiyohito; Yanagihara, Rie; Tokui, Takako; Kato, Takeshi; Kuwahara, Akira; Matsui, Sumika; Irahara, Minoru

2017-10-01

Exposure to various stressors, including psychological, metabolic, and immune, in the perinatal period induces long-lasting effects in physiological function and increase the risk of metabolic disorders in later life. In the present study, sexual maturation and sexual behavior were assessed in prenatally undernourished mature male rats. All the pregnant rats were divided into the maternal normal nutrition (mNN) group and the maternal undernutrition (mUN) group. The mUN mothers received 50% of the amount of the daily food intake of the mNN mothers. Preputial separation and sexual behavior were observed in randomly selected pups of the mNN and mUN groups. The body weight of the mothers was significantly lighter in the mUN group than in the mNN group. Similarly, the pups in the mUN group showed a significantly lower body weight than those in the mNN group from postnatal day (PND) 1 to PND 15. The preputial separation day was significantly delayed in the mUN group, compared to the mNN group. Sexual behavior did not show any significant difference between the two groups. These findings indicated that prenatal undernutrition delayed sexual maturation, but did not suppress sexual behavior, in mature male rats.

Impact of a universal intervention targeting childhood disruptive behavior problems on tobacco and alcohol initiation from age 10 to 13 years

NARCIS (Netherlands)

van Lier, P.A.C.; Huizink, A.C.; Crijnen, A.A.M.

2008-01-01

The distal impact of a school based universal preventive intervention targeting disruptive behavior problems on tobacco and alcohol use from age 10 to 13 years was explored. Second grade classrooms (children aged 7 years) were randomly assigned to the intervention or a control condition. Tobacco and

Impact of a preventive intervention targeting childhood disruptive behavior problems on tobacco and alcohol initiation from age 10 to 13 years

NARCIS (Netherlands)

van Lier, P.A.C.; Huizink, A.; Crijnen, A.A.

2009-01-01

The distal impact of a school based universal preventive intervention targeting disruptive behavior problems on tobacco and alcohol use from age 10 to 13 years was explored. Second grade classrooms (children aged 7 years) were randomly assigned to the intervention or a control condition. Tobacco and

The neurogenetics of group behavior in Drosophila melanogaster.

Science.gov (United States)

Ramdya, Pavan; Schneider, Jonathan; Levine, Joel D

2017-01-01

Organisms rarely act in isolation. Their decisions and movements are often heavily influenced by direct and indirect interactions with conspecifics. For example, we each represent a single node within a social network of family and friends, and an even larger network of strangers. This group membership can affect our opinions and actions. Similarly, when in a crowd, we often coordinate our movements with others like fish in a school, or birds in a flock. Contributions of the group to individual behaviors are observed across a wide variety of taxa but their biological mechanisms remain largely unknown. With the advent of powerful computational tools as well as the unparalleled genetic accessibility and surprisingly rich social life of Drosophila melanogaster, researchers now have a unique opportunity to investigate molecular and neuronal determinants of group behavior. Conserved mechanisms and/or selective pressures in D. melanogaster can likely inform a much wider phylogenetic scale. Here, we highlight two examples to illustrate how quantitative and genetic tools can be combined to uncover mechanisms of two group behaviors in D. melanogaster: social network formation and collective behavior. Lastly, we discuss future challenges towards a full understanding how coordinated brain activity across many individuals gives rise to the behavioral patterns of animal societies. © 2017. Published by The Company of Biologists Ltd.

Dissociation of sad facial expressions and autonomic nervous system responding in boys with disruptive behavior disorders

Science.gov (United States)

Marsh, Penny; Beauchaine, Theodore P.; Williams, Bailey

2009-01-01

Although deficiencies in emotional responding have been linked to externalizing behaviors in children, little is known about how discrete response systems (e.g., expressive, physiological) are coordinated during emotional challenge among these youth. We examined time-linked correspondence of sad facial expressions and autonomic reactivity during an empathy-eliciting task among boys with disruptive behavior disorders (n = 31) and controls (n = 23). For controls, sad facial expressions were associated with reduced sympathetic (lower skin conductance level, lengthened cardiac preejection period [PEP]) and increased parasympathetic (higher respiratory sinus arrhythmia [RSA]) activity. In contrast, no correspondence between facial expressions and autonomic reactivity was observed among boys with conduct problems. Furthermore, low correspondence between facial expressions and PEP predicted externalizing symptom severity, whereas low correspondence between facial expressions and RSA predicted internalizing symptom severity. PMID:17868261

Abnormal energy deposition on the wall through plasma disruptions

International Nuclear Information System (INIS)

Yamazaki, K.; Schmidt, G.L.

1984-07-01

The dissipation of plasma kinetic and magnetic energy during sawtooth oscillstions and disruptions in tokamaks is analyzed using Kadomtsev's disruption model and the plasma-circuit equations. New simple scalings of several characteristic times are obtained for sawteeth and for thermal and magnetic energy quenches of disruptions. The abnormal energy deposition on the wall during major or minor disruptions, estimated from this analysis, is compared with bolometric measurements in the PDX tokamak. Especially, magnetic energy dissipation during current termination period is shown to be reduced by the strong coupling of the plasma current with external circuits. These analyses are found to be useful to predict the phenomenological behavior of plasma disruptions in large future tokamaks, and to estimate abnormal heat deposition on the wall during plasma disruptions. (author)

The Use of Group Therapy as a Means of Facilitating Cognitive-Behavioural Instruction for Adolescents with Disruptive Behaviour

Science.gov (United States)

Larmar, Stephen

2006-01-01

This article reports on the findings of an action research enquiry examining the efficacy of group therapy as a means of facilitating cognitive-behavioural instruction for students who exhibit disruptive behaviours. A curriculum comprising the key tenets of cognitive-behaviour modification was developed and taught over a 9-week period to a group…

Maternal and littermate deprivation disrupts maternal behavior and social-learning of food preference in adulthood: tactile stimulation, nest odor, and social rearing prevent these effects.

Science.gov (United States)

Melo, Angel I; Lovic, Vedran; Gonzalez, Andrea; Madden, Melissa; Sinopoli, Katia; Fleming, Alison S

2006-04-01

Maternal and littermate (social) separation, through artificial rearing (AR), disrupts the development of subsequent maternal behavior and social learning in rats. The addition of maternal-licking-like stimulation during AR, partially reverses some of these effects. However, little is know about the role of social stimuli from littermates and nest odors during the preweaning period, in the development of the adult maternal behavior and social learning. The purpose of this study was to examine the effects of peer- and peer-and-odor rearing on the development of maternal behavior and social learning in rats. Female pups were reared with mothers (mother reared-MR) or without mothers (AR) from postnatal day (PND) 3. AR rats received three different treatments: (1) AR-CONTROL group received minimal tactile stimulation, (2) AR-ODOR females received exposure to maternal nest material inside the AR-isolation-cup environment, (3) AR-SOCIAL group was reared in the cup with maternal nest material and a conspecific of the same-age and same-sex and received additional tactile stimulation. MR females were reared by their mothers in the nest and with conspecifics. In adulthood, rats were tested for maternal behavior towards their own pups and in a social learning task. Results confirm our previous report that AR impairs performance of maternal behavior and the development of a social food preference. Furthermore, social cues from a littermate, in combination with tactile stimulation and the nest odor, reversed the negative effects of complete isolation (AR-CONTROL) on some of the above behaviors. Exposure to the odor alone also had effects on some of these olfactory-mediated behaviors. These studies indicate that social stimulation from littermates during the preweaning period, in combination with odor from the nest and tactile stimulation, contributes to the development of affiliative behaviors. Copyright (c) 2006 Wiley Periodicals, Inc.

A Preliminary Investigation of a Randomized Dependent Group Contingency for Hallway Transitions

Science.gov (United States)

Deshais, Meghan A.; Fisher, Alyssa B.; Kahng, SungWoo

2018-01-01

We conducted a preliminary investigation of a randomized dependent group contingency to decrease disruptive behavior during hallway transitions. Two first-graders, identified by their classroom teacher, participated in this study. A multiple baseline across transitions was used to evaluate the effects of the randomized dependent group contingency…

Astrocyte-specific disruption of SynCAM1 signaling results in ADHD-like behavioral manifestations.

Directory of Open Access Journals (Sweden)

Ursula S Sandau

Full Text Available SynCAM1 is an adhesion molecule involved in synaptic differentiation and organization. SynCAM1 is also expressed in astroglial cells where it mediates astrocyte-to astrocyte and glial-neuronal adhesive communication. In astrocytes, SynCAM1 is functionally linked to erbB4 receptors, which are involved in the control of both neuronal/glial development and mature neuronal and glial function. Here we report that mice carrying a dominant-negative form of SynCAM1 specifically targeted to astrocytes (termed GFAP-DNSynCAM1 mice exhibit disrupted diurnal locomotor activity with enhanced and more frequent episodes of activity than control littermates during the day (when the animals are normally sleeping accompanied by shorter periods of rest. GFAP-DNSynCAM1 mice also display high levels of basal activity in the dark period (the rodent's awake/active time that are attenuated by the psychostimulant D,L-amphetamine, and reduced anxiety levels in response to both avoidable and unavoidable provoking stimuli. These results indicate that disruption of SynCAM1-dependent astroglial function results in behavioral abnormalities similar to those described in animals model of attention-deficit hyperactive disorder (ADHD, and suggest a hitherto unappreciated contribution of glial cells to the pathophysiology of this disorder.

Behavioral responses in structured populations pave the way to group optimality.

Science.gov (United States)

Akçay, Erol; Van Cleve, Jeremy

2012-02-01

An unresolved controversy regarding social behaviors is exemplified when natural selection might lead to behaviors that maximize fitness at the social-group level but are costly at the individual level. Except for the special case of groups of clones, we do not have a general understanding of how and when group-optimal behaviors evolve, especially when the behaviors in question are flexible. To address this question, we develop a general model that integrates behavioral plasticity in social interactions with the action of natural selection in structured populations. We find that group-optimal behaviors can evolve, even without clonal groups, if individuals exhibit appropriate behavioral responses to each other's actions. The evolution of such behavioral responses, in turn, is predicated on the nature of the proximate behavioral mechanisms. We model a particular class of proximate mechanisms, prosocial preferences, and find that such preferences evolve to sustain maximum group benefit under certain levels of relatedness and certain ecological conditions. Thus, our model demonstrates the fundamental interplay between behavioral responses and relatedness in determining the course of social evolution. We also highlight the crucial role of proximate mechanisms such as prosocial preferences in the evolution of behavioral responses and in facilitating evolutionary transitions in individuality.

ADHD and Disruptive behavior scores – associations with MAO-A and 5-HTT genes and with platelet MAO-B activity in adolescents

Directory of Open Access Journals (Sweden)

Larsson Jan-Olov

2008-04-01

Full Text Available Abstract Background Pharmacological and genetic studies suggest the importance of the dopaminergic, serotonergic, and noradrenergic systems in the pathogenesis of Attention Deficit Hyperactivity Disorder (ADHD and Disruptive Behavior Disorder (DBD. We have, in a population-based sample, studied associations between dimensions of the ADHD/DBD phenotype and Monoamine Oxidase B (MAO-B activity in platelets and polymorphisms in two serotonergic genes: the Monoamine Oxidase A Variable Number of Tandem Repeats (MAO-A VNTR and the 5-Hydroxytryptamine Transporter gene-Linked Polymorphic Region (5-HTT LPR. Methods A population-based sample of twins, with an average age of 16 years, was assessed for ADHD/DBD with a clinical interview; Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version (K-SADS-PL. Blood was drawn from 247 subjects and analyzed for platelet MAO-B activity and polymorphisms in the MAO-A and 5-HTT genes. Results We found an association in girls between low platelet MAO-B activity and symptoms of Oppositional Defiant Disorder (ODD. In girls, there was also an association between the heterozygote long/short 5-HTT LPR genotype and symptoms of conduct disorder. Furthermore the heterozygote 5-HTT LPR genotype in boys was found to be associated with symptoms of Conduct Disorder (CD. In boys, hemizygosity for the short MAO-A VNTR allele was associated with disruptive behavior. Conclusion Our study suggests that the serotonin system, in addition to the dopamine system, should be further investigated when studying genetic influences on the development of Disruptive Behavior Disorders.

Disruption mitigation studies in DIII-D

International Nuclear Information System (INIS)

Taylor, P.L.; Kellman, A.G.; Evans, T.E.

1999-01-01

Data on the discharge behavior, thermal loads, halo currents, and runaway electrons have been obtained in disruptions on the DIII-D tokamak. These experiments have also evaluated techniques to mitigate the disruptions while minimizing runaway electron production. Experiments injecting cryogenic impurity killer pellets of neon and argon and massive amounts of helium gas have successfully reduced these disruption effects. The halo current generation, scaling, and mitigation are understood and are in good agreement with predictions of a semianalytic model. Results from killer pellet injection have been used to benchmark theoretical models of the pellet ablation and energy loss. Runaway electrons are often generated by the pellets and new runaway generation mechanisms, modifications of the standard Dreicer process, have been found to explain the runaways. Experiments with the massive helium gas puff have also effectively mitigated disruptions without the formation of runaway electrons that can occur with killer pellets

Nervous system disruption and concomitant behavioral abnormality in early hatched pufferfish larvae exposed to heavy oil.

Science.gov (United States)

Kawaguchi, Masahumi; Sugahara, Yuki; Watanabe, Tomoe; Irie, Kouta; Ishida, Minoru; Kurokawa, Daisuke; Kitamura, Shin-Ichi; Takata, Hiromi; Handoh, Itsuki C; Nakayama, Kei; Murakami, Yasunori

2011-08-01

Spills of heavy oil (HO) over the oceans have been proven to have an adverse effect on marine life. It has been hypothesized that exposure of early larvae of sinking eggs to HO leads largely to normal morphology, whereas abnormal organization of the developing neural scaffold is likely to be found. HO-induced disruption of the nervous system, which controls animal behavior, may in turn cause abnormalities in the swimming behavior of hatched larvae. To clarify the toxicological effects of HO, we performed exposure experiments and morphological and behavioral analyses in pufferfish (Takifugu rubripes) larvae. Fertilized eggs of pufferfish were exposed to 50 mg/L of HO for 8 days and transferred to fresh seawater before hatching. The hatched larvae were observed for their swimming behavior, morphological appearance, and construction of muscles and nervous system. In HO-exposed larvae, we did not detect any anomaly of body morphology. However, they showed an abnormal swimming pattern and disorganized midbrain, a higher center controlling movement. Our results suggest that HO-exposed fishes suffer developmental disorder of the brain that triggers an abnormal swimming behavior and that HO may be selectively toxic to the brain and cause physical disability throughout the life span of these fishes.

Mind wandering and motor control: off-task thinking disrupts the online adjustment of behavior.

Science.gov (United States)

Kam, Julia W Y; Dao, Elizabeth; Blinn, Patricia; Krigolson, Olav E; Boyd, Lara A; Handy, Todd C

2012-01-01

Mind wandering episodes have been construed as periods of "stimulus-independent" thought, where our minds are decoupled from the external sensory environment. In two experiments, we used behavioral and event-related potential (ERP) measures to determine whether mind wandering episodes can also be considered as periods of "response-independent" thought, with our minds disengaged from adjusting our behavioral outputs. In the first experiment, participants performed a motor tracking task and were occasionally prompted to report whether their attention was "on-task" or "mind wandering." We found greater tracking error in periods prior to mind wandering vs. on-task reports. To ascertain whether this finding was due to attenuation in visual perception per se vs. a disruptive effect of mind wandering on performance monitoring, we conducted a second experiment in which participants completed a time-estimation task. They were given feedback on the accuracy of their estimations while we recorded their EEG, and were also occasionally asked to report their attention state. We found that the sensitivity of behavior and the P3 ERP component to feedback signals were significantly reduced just prior to mind wandering vs. on-task attentional reports. Moreover, these effects co-occurred with decreases in the error-related negativity elicited by feedback signals (fERN), a direct measure of behavioral feedback assessment in cortex. Our findings suggest that the functional consequences of mind wandering are not limited to just the processing of incoming stimulation per se, but extend as well to the control and adjustment of behavior.

Abnormal energy deposition on the wall through plasma disruptions

International Nuclear Information System (INIS)

Yamazaki, K.; Schmidt, G.L.

1984-01-01

The dissipation of plasma kinetic and magnetic energy during sawtooth oscillations and disruptions in tokamak is analyzed using Kadomtsev's disruption model and the plasma-circuit equations. New simple scalings of several characteristic times are obtained for sawteeth and for thermal and magnetic energy quenches of disruptions. The abnormal energy deposition on the wall during major or minor disruptions, estimated from this analysis, is compared with bolometric measurements in the PDX tokamak. Especially, magnetic energy dissipation during the current termination period is shown to be reduced by the strong coupling of the plasma current with external circuits. These analyses are found to be useful to predict the phenomenological behavior of plasma disruptions in large future tokamaks, and to estimate abnormal heat deposition on the wall during plasma disruptions. (orig.)

Patterns of change in early childhood aggressive-disruptive behavior: gender differences in predictions from early coercive and affectionate mother-child interactions.

Science.gov (United States)

McFadyen-Ketchum, S A; Bates, J E; Dodge, K A; Pettit, G S

1996-10-01

The present study focused on mother-child interaction predictors of initial levels and change in child aggressive and disruptive behavior at school from kindergarten to third grade. Aggression-disruption was measured via annual reports from teachers and peers. Ordinary least-squares regression was used to identify 8 separate child aggression trajectories, 4 for each gender: high initial levels with increases in aggression, high initial levels with decrease in aggression, low initial levels with increases in aggression, and low initial levels with decreases in aggression. Mother-child interaction measures of coercion and nonaffection collected prior to kindergarten were predictive of initial levels of aggression-disruption in kindergarten in both boys and girls. However, boys and girls differed in how coercion and nonaffection predicted change in aggression-disruption across elementary school years. For boys, high coercion and nonaffection were particularly associated with the high-increasing-aggression trajectory, but for girls, high levels of coercion and nonaffection were associated with the high-decreasing-aggression trajectory. This difference is discussed in the context of Patterson et al.'s coercion training theory, and the need for gender-specific theories of aggressive development is noted.

Circadian Rhythm and Sleep Disruption: Causes, Metabolic Consequences, and Countermeasures

Science.gov (United States)

Skene, Debra J.; Arendt, Josephine; Cade, Janet E.; Grant, Peter J.; Hardie, Laura J.

2016-01-01

Circadian (∼24-hour) timing systems pervade all kingdoms of life and temporally optimize behavior and physiology in humans. Relatively recent changes to our environments, such as the introduction of artificial lighting, can disorganize the circadian system, from the level of the molecular clocks that regulate the timing of cellular activities to the level of synchronization between our daily cycles of behavior and the solar day. Sleep/wake cycles are intertwined with the circadian system, and global trends indicate that these, too, are increasingly subject to disruption. A large proportion of the world's population is at increased risk of environmentally driven circadian rhythm and sleep disruption, and a minority of individuals are also genetically predisposed to circadian misalignment and sleep disorders. The consequences of disruption to the circadian system and sleep are profound and include myriad metabolic ramifications, some of which may be compounded by adverse effects on dietary choices. If not addressed, the deleterious effects of such disruption will continue to cause widespread health problems; therefore, implementation of the numerous behavioral and pharmaceutical interventions that can help restore circadian system alignment and enhance sleep will be important. PMID:27763782

Circadian Rhythm and Sleep Disruption: Causes, Metabolic Consequences, and Countermeasures.

Science.gov (United States)

Potter, Gregory D M; Skene, Debra J; Arendt, Josephine; Cade, Janet E; Grant, Peter J; Hardie, Laura J

2016-12-01

Circadian (∼24-hour) timing systems pervade all kingdoms of life and temporally optimize behavior and physiology in humans. Relatively recent changes to our environments, such as the introduction of artificial lighting, can disorganize the circadian system, from the level of the molecular clocks that regulate the timing of cellular activities to the level of synchronization between our daily cycles of behavior and the solar day. Sleep/wake cycles are intertwined with the circadian system, and global trends indicate that these, too, are increasingly subject to disruption. A large proportion of the world's population is at increased risk of environmentally driven circadian rhythm and sleep disruption, and a minority of individuals are also genetically predisposed to circadian misalignment and sleep disorders. The consequences of disruption to the circadian system and sleep are profound and include myriad metabolic ramifications, some of which may be compounded by adverse effects on dietary choices. If not addressed, the deleterious effects of such disruption will continue to cause widespread health problems; therefore, implementation of the numerous behavioral and pharmaceutical interventions that can help restore circadian system alignment and enhance sleep will be important.

Diminishing parochialism in intergroup conflict by disrupting the right temporo-parietal junction.

Science.gov (United States)

Baumgartner, Thomas; Schiller, Bastian; Rieskamp, Jörg; Gianotti, Lorena R R; Knoch, Daria

2014-05-01

Individuals react to violation of social norms by outgroup members differently than to transgressions of those same norms by ingroup members: namely outgroup perpetrators are punished much more harshly than ingroup perpetrators. This parochial punishment pattern has been observed and extensively studied in social psychology and behavioral economics. Despite progress in recent years, however, little is known about the neural underpinnings of this intergroup bias. Here, we demonstrate by means of transcranial magnetic stimulation (TMS) that the transient disruption of the right, but not the left temporo-parietal junction (TPJ), reduces parochial punishment in a third-party punishment paradigm with real social groups. Moreover, we show that this observed TMS effect on parochial punishment is mediated by a classical punishment motive, i.e. retaliation. Finally, our data suggests that a change in perspective-taking might be the underlying mechanism that explains the impact of right TPJ disruption on retaliation motivation and parochial punishment. These findings provide the first causal evidence that the right TPJ plays a pivotal role in the implementation of parochial behaviors.

Cooperative behavior evolution of small groups on interconnected networks

International Nuclear Information System (INIS)

Huang, Keke; Cheng, Yuan; Zheng, Xiaoping; Yang, Yeqing

2015-01-01

Highlights: • Small groups are modeled on interconnected networks. • Players face different dilemmas inside and outside small groups. • Impact of the ratio and strength of link on the behavioral evolution are studied. - Abstract: Understanding the behavioral evolution in evacuation is significant for guiding and controlling the evacuation process. Based on the fact that the population consists of many small groups, here we model the small groups which are separated in space but linked by other methods, such as kinship, on interconnected networks. Namely, the players in the same layer belong to an identical small group, while the players located in different layers belong to different small groups. And the players of different layers establish interaction by edge crossed layers. In addition, players face different dilemmas inside and outside small groups, in detail, the players in the same layer play prisoner’s dilemma, but players in different layers play harmony game. By means of numerous simulations, we study the impact of the ratio and strength of link on the behavioral evolution. Because the framework of this work takes the space distribution into account, which is close to the realistic life, we hope that it can provide a new insight to reveal the law of behavioral evolution of evacuation population.

Prefrontal cortex modulates desire and dread generated by nucleus accumbens glutamate disruption.

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Richard, Jocelyn M; Berridge, Kent C

2013-02-15

Corticolimbic circuits, including direct projections from prefrontal cortex to nucleus accumbens (NAc), permit top-down control of intense motivations generated by subcortical circuits. In rats, localized disruptions of glutamate signaling within medial shell of NAc generate desire or dread, anatomically organized along a rostrocaudal gradient analogous to a limbic keyboard. At rostral locations in shell, these disruptions generate appetitive eating, but at caudal locations the disruptions generate progressively fearful behaviors (distress vocalizations, escape attempts, and antipredator reactions). Here, we asked whether medial prefrontal cortex can modulate intense motivations generated by subcortical NAc disruptions. We used simultaneous microinjections in medial prefrontal cortex regions and in NAc shell to examine whether the desire or dread generated by NAc shell disruptions is modulated by activation/inhibition of three specific regions of prefrontal cortex: medial orbitofrontal cortex, infralimbic cortex (homologous to area 25 or subgenual anterior cingulate in the human), or prelimbic cortex (midventral anterior cingulate). We found that activation of medial orbitofrontal cortex biased intense bivalent motivation in an appetitive direction by amplifying generation of eating behavior by middle to caudal NAc disruptions, without altering fear. In contrast, activation of infralimbic prefrontal cortex powerfully and generally suppressed both appetitive eating and fearful behaviors generated by NAc shell disruptions. These results suggest that corticolimbic projections from discrete prefrontal regions can either bias motivational valence or generally suppress subcortically generated intense motivations of desire or fear. Copyright © 2013 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.

Affective Disruption from Social Rhythm and Behavioral Approach System (BAS) Sensitivities: A Test of the Integration of the Social Zeitgeber and BAS Theories of Bipolar Disorder.

Science.gov (United States)

Boland, Elaine M; Stange, Jonathan P; Labelle, Denise R; Shapero, Benjamin G; Weiss, Rachel B; Abramson, Lyn Y; Alloy, Lauren B

2016-05-01

The Behavioral Approach System (BAS)/Reward Hypersensitivity Theory and the Social Zeitgeber Theory are two biopsychosocial theories of bipolar spectrum disorders (BSD) that may work together to explain affective dysregulation. The present study examined whether BAS sensitivity is associated with affective symptoms via a) increased social rhythm disruption in response to BAS-relevant life events, or b) greater exposure to BAS events leading to social rhythm disruption and subsequent symptoms. Results indicated that high BAS individuals were more likely to experience social rhythm disruption following BAS-relevant events. Social rhythm disruption mediated the association between BAS-relevant events and symptoms (hypothesis a). High BAS individuals experienced significantly more BAS-relevant events, which predicted greater social rhythm disruption, which predicted greater levels of affective symptoms (hypothesis b). Individuals at risk for BSD may be sensitive to BAS-relevant stimuli, experience more BAS-relevant events, and experience affective dysregulation due to the interplay of the BAS and circadian rhythms.

Group treatment for trichotillomania: cognitive-behavioral therapy versus supportive therapy.

Science.gov (United States)

Toledo, Edson Luiz; De Togni Muniz, Enilde; Brito, Antônio Marcelo Cabrita; de Abreu, Cristiano Nabuco; Tavares, Hermano

2015-04-01

Trichotillomania is a psychiatric condition characterized by the chronic pulling and plucking of one's own hair. Cognitive-behavioral therapy shows promise as a treatment for trichotillomania and might be preferable to pharmacotherapy. However, there have been no randomized, controlled studies of the efficacy of group cognitive-behavioral therapy. We evaluated 44 subjects, recruited from April 2009 to May 2010, all of whom met DSM-IV criteria for a diagnosis of trichotillomania. Subjects were randomized to receive 22 sessions of either group cognitive-behavioral therapy or group supportive therapy (control). Treatment evaluation was non-blind and used self-report scales. The primary outcome measure was the improvement of hair-plucking behavior as assessed by the Massachusetts General Hospital Hairpulling Scale. Secondary measures included scores on the Beck Depression Inventory, the Beck Anxiety Inventory, and the Social Adjustment Scale-Self-Report. Both groups showed significant posttreatment improvement in the scores from the Massachusetts General Hospital Hairpulling Scale (F = 23.762, P behavior over time was significantly greater in the study group than in the control group (F = 3.545, P cognitive-behavioral therapy is a valid treatment for trichotillomania. This treatment model should be further revised and expanded to address comorbidities such as anxiety and social maladjustment. ClinicalTrials.gov identifier: NCT01968343. © Copyright 2015 Physicians Postgraduate Press, Inc.

Merely Misunderstood? Receptive, Expressive, and Pragmatic Language in Young Children With Disruptive Behavior Disorders

Science.gov (United States)

Gremillion, Monica L.; Martel, Michelle M.

2015-01-01

Children with disruptive behavior disorders (DBDs) often seem to have poorer language skills compared to same-age peers; however, language as an early risk factor for DBD has received little empirical attention. The present study provides an empirical examination of associations between normal language variation and DBD by investigating receptive, expressive, and pragmatic language skills and preschool DBD symptoms. The sample consisted of 109 preschoolers ages 3 to 6 (M = 4.77 years, SD = 1.10, 59% boys; 73% with DBD, including oppositional defiant disorder [ODD] and attention-deficit/hyperactivity disorder [ADHD]) along with their primary caregivers, who completed a clinician-administered interview, symptom questionnaires, and a questionnaire measure of pragmatic language, and teacher and/or daycare providers completed symptom questionnaires. Children completed objective tests of receptive and expressive vocabulary. Preschoolers with DBD showed poorer receptive, expressive, and pragmatic skills compared to preschoolers without DBD. Preschoolers with ADHD-only or ADHD+ODD exhibited poorer language skills, compared to ODD and non-DBD groups. Specificity analyses suggested that parent-rated hyperactivity-impulsivity were particularly associated with poorer language skills. Thus, preschoolers with DBD exhibited poorer language skills compared to preschoolers without DBD, and preschoolers with increased hyperactivity-impulsivity exhibited particular problems with language skills. This work suggests the need for early assessment of language in preschoolers, particularly those with ADHD, as well as the possible utility of tailored interventions focused on improving language skills, particularly for those with high hyperactivity-impulsivity. PMID:23924073

Tracking Effects of Problematic Social Networking on Adolescent Psychopathology: The Mediating Role of Sleep Disruptions.

Science.gov (United States)

Vernon, Lynette; Modecki, Kathryn L; Barber, Bonnie L

2017-01-01

Concerns are growing about adolescents' problematic social networking and possible links to depressed mood and externalizing behavior. Yet there remains little understanding of underlying processes that may account for these associations, including the mediating role of sleep disruption. This study tests this putative mediating process and examines change in problematic social networking investment and disrupted sleep, in relation to change in depressed mood and externalizing behavior. A sample of 874 students (41% male; 57.2% Caucasian; baseline M age = 14.4 years) from 27 high schools were surveyed. Participants' problematic social networking, sleep disruption, and psychopathology (depressed mood, externalizing behaviors) were measured annually over 3 years. Longitudinal mediation was tested using latent trajectories of problematic social networking use, sleep disruption, and psychopathology. Both problematic social networking and sleep disruption underwent positive linear growth over time. Adolescents who increasingly invested in social networking reported increased depressed mood, with around 53% of this association explained by the indirect effect of increased sleep disruptions. Further, adolescents who increasingly invested in social networking also reported increased externalizing behavior; some of this relation was explained (13%) via increased sleep disruptions. However an alternative model in which increased externalizing was associated with increased social networking, mediated by sleep disruptions, indicated a reciprocal relation of similar magnitude. It is important for parents, teachers, and psychologists to minimize the negative effects of social networking on adolescents' psychopathology. Interventions should potentially target promoting healthy sleep habits through reductions in social networking investment and rescheduling usage away from bedtime.

An overview of estrogen-associated endocrine disruption in fishes: evidence of effects on reproductive and immune physiology

Science.gov (United States)

Iwanowicz, L.R.; Blazer, V.S.

2011-01-01

Simply and perhaps intuitively defined, endocrine disruption is the abnormal modulation of normal hormonal physiology by exogenous chemicals. In fish, endocrine disruption of the reproductive system has been observed worldwide in numerous species and is known to affect both males and females. Observations of biologically relevant endocrine disruption most commonly occurs near waste water treatment plant outfalls, pulp and paper mills, and areas of high organic loading sometimes associated with agricultural practices. Estrogenic endocrine disrupting chemicals (EEDCs) have received an overwhelmingly disproportionate amount of scientific attention compared to other EDCs in recent years. In male fishes, exposure to EEDCs can lead to the induction of testicular oocytes (intersex), measurable plasma vitellogenin protein, altered sex steroid profiles, abnormal spawning behavior, skewed population sex ratios, and lessened reproductive success. Interestingly, contemporary research purports that EDCs modulate aspects of non-reproductive physiology including immune function. Here we present an overview of endocrine disruption in fishes associated with estrogenic compounds, implications of this phenomenon, and examples of EDC related research findings by our group in the Potomac River Watershed, USA.

Gender and age differences in expressing disruptive behavior during class

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Pekić Jasmina M.

2016-01-01

Full Text Available The article focuses on the phenomenon of school indiscipline which proved to be an important factor of disruption in the teaching process. The aims of our research were to determine whether there were gender and age differences in expressing indiscipline during a class, as well as to examine the latent space of the School Indiscipline Scale. The sample included 897 students (42.1% boys and 57.9% girls who attend elementary (46.6% or secondary (53.4% school, aged 12 - 19. The instrument used was the Scale of School Indiscipline. The results of the component analysis indicated four components: nonparticipation, aggression, defiance to authority and cheating. By applying the MANOVA test we detected gender differences in all four subscales: that girls tend to cheat or not participate in the teaching process, while boys are more inclined to aggression and authority defiance. Regarding age differences it was noted that elementary school students are more inclined to behave aggressively while secondary school students tend not to participate and cheat. Bearing in mind that knowing gender and age differences of expressing unwanted behavior in school is very important it seems that the success of any prevention programs depend, to a large extent, upon their congruence with the students with different characteristics.

Disruptive School Peers and Student Outcomes

DEFF Research Database (Denmark)

Kristoffersen, Jannie H. G.; Krægpøth, Morten; Nielsen, Helena Skyt

2015-01-01

This paper estimates how peers’ achievement gains are affected by the presence of potentially disruptive and emotionally sensitive children in the school-cohort. We exploit that some children move between schools and thus generate variation in peer composition in the receiving school-cohort. We...... identify three groups of potentially disruptive and emotionally sensitive children from detailed Danish register data: children with divorced parents, children with parents convicted of crime, and children with a psychiatric diagnosis. We find that adding potentially disruptive children lowers the academic...

Disruptive School Peers and Student Outcomes

DEFF Research Database (Denmark)

Kristoffersen, Jannie H. Grøne; Krægpøth, Morten; Nielsen, Helena Skyt

This paper estimates how peers’ achievement gains are affected by the presence of potentially disruptive and emotionally sensitive children in the school-cohort. We exploit that some children move between schools and thus generate variation in peer composition in the receiving school-cohort. We...... identify three groups of potentially disruptive and emotionally sensitive children from detailed Danish register data: children with divorced parents, children with parents convicted of crime, and children with a psychiatric diagnosis. We find that adding potentially disruptive children lowers the academic...

Disruptive School Peers and Student Outcomes

DEFF Research Database (Denmark)

Kristoffersen, Jannie H. G.; Krægpøth, Morten Visby; Skyt Nielsen, Helena

This paper estimates how peers’ achievement gains are affected by the presence of potentially disruptive and emotionally sensitive children in the school-cohort. We exploit that some children move between schools and thus generate variation in peer composition in the receiving schoolcohort. We...... identify three groups of potentially disruptive and emotionally sensitive children from detailed Danish register data: children with divorced parents, children with parents convicted of crime, and children with a psychiatric diagnosis. We find that adding potentially disruptive children lowers the academic...

Assessing Socioeconomic Impacts of Cascading Infrastructure Disruptions in a Dynamic Human-Infrastructure Network

Science.gov (United States)

2016-07-01

community behavior as part of a game-theoretical model , and (c) evaluates the cascading propagation of disruptions (due to interdependencies) and... businesses . The conceptual model represents this by placing a generator at each of 137 commercial locations identified by the UTP across the city, each...layered network model , addressing mechanisms of community behavior, mechanisms of disruption propagation, representations of system equilib- rium, and

Clerodendrum inerme Leaf Extract Alleviates Animal Behaviors, Hyperlocomotion, and Prepulse Inhibition Disruptions, Mimicking Tourette Syndrome and Schizophrenia

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Hon-Lie Chen

2012-01-01

Full Text Available Previously, we found a patient with intractable motor tic disorder, a spectrum of Tourette syndrome (TS, responsive to the ground leaf juice of Clerodendrum inerme (CI. Here, we examined the effect of the ethanol extract of CI leaves (CI extract on animal behaviors mimicking TS, hyperlocomotion, and sensorimotor gating deficit. The latter is also observed in schizophrenic patients and can be reflected by a disruption of prepulse inhibition of acoustic startle response (PPI in animal models induced by methamphetamine and NMDA channel blockers (ketamine or MK-801, based on hyperdopaminergic and hypoglutamatergic hypotheses, respectively. CI extract (10–300 mg/kg, i.p. dose-dependently inhibited hyperlocomotion induced by methamphetamine (2 mg/kg, i.p. and PPI disruptions induced by methamphetamine, ketamine (30 mg/kg, i.p., and MK-801 (0.3 mg/kg, i.p. but did not affect spontaneous locomotor activity, rotarod performance, and grip force. These results suggest that CI extract can relieve hyperlocomotion and improve sensorimotor gating deficit, supporting the therapeutic potential of CI for TS and schizophrenia.

Effect of music on mealtime disruptions.

Science.gov (United States)

Hooper, Jeff; Carson, Derek; Lindsay, Bill

People with learning disabilities can disrupt mealtimes with non-cooperative, aggressive and self-injurious behaviours that challenge other people to tolerate and manage them. These behaviours appear to arise because the proximity of other people, and the heightened activity and noise of a dining room, causes anxiety and agitation. To examine how delivering calming background music via headphones affected anxiety-driven behaviours that disrupted mealtimes. A sample of 30 adults with mild, moderate or severe learning disabilities were videotaped during mealtimes on two consecutive days. On the first day, half the group ate without any calming music while the other half sat opposite them wearing earphones and listening to calming music. On the second day, the non-music and music groups swapped around. Of the participants who tolerated the earphones, only three showed disruptive behaviour; all three had been sitting at the table waiting for their food. With so few examples, meaningful inferential analysis was not possible. However, there were signs that calming music had a positive effect on disruptive mealtime behaviours. It eliminated physical harm, complaining and verbal repetition in one person, and stopped another from shouting/swearing. It also reduced the incidence of shouting/swearing, restlessness and vocalising. Calming music and reduced waiting at tables for food may reduce disruptive behaviours.

Group Norms and the Attitude-Behavior Relationship: A Role for Group Identification.

Science.gov (United States)

Terry, Deborah J.; Hogg, Michael A.

1996-01-01

Two studies provided support for the proposal that the role of norms in attitude-behavior relations can be useful reconceptualized for the perspective of social identity/self- categorization theory. Study one examined group norms as they influenced subjects to engage in regular exercise. Study two examined group norms as they influenced subjects…

Short- and long-term health consequences of sleep disruption

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Medic G

2017-05-01

Full Text Available Goran Medic,1,2 Micheline Wille,1 Michiel EH Hemels1 1Market Access, Horizon Pharma B.V., Utrecht, 2Unit of Pharmacoepidemiology & Pharmacoeconomics, Department of Pharmacy, University of Groningen, Groningen, The Netherlands Abstract: Sleep plays a vital role in brain function and systemic physiology across many body systems. Problems with sleep are widely prevalent and include deficits in quantity and quality of sleep; sleep problems that impact the continuity of sleep are collectively referred to as sleep disruptions. Numerous factors contribute to sleep disruption, ranging from lifestyle and environmental factors to sleep disorders and other medical conditions. Sleep disruptions have substantial adverse short- and long-term health consequences. A literature search was conducted to provide a nonsystematic review of these health consequences (this review was designed to be nonsystematic to better focus on the topics of interest due to the myriad parameters affected by sleep. Sleep disruption is associated with increased activity of the sympathetic nervous system and hypothalamic–pituitary–adrenal axis, metabolic effects, changes in circadian rhythms, and proinflammatory responses. In otherwise healthy adults, short-term consequences of sleep disruption include increased stress responsivity, somatic pain, reduced quality of life, emotional distress and mood disorders, and cognitive, memory, and performance deficits. For adolescents, psychosocial health, school performance, and risk-taking behaviors are impacted by sleep disruption. Behavioral problems and cognitive functioning are associated with sleep disruption in children. Long-term consequences of sleep disruption in otherwise healthy individuals include hypertension, dyslipidemia, cardiovascular disease, weight-related issues, metabolic syndrome, type 2 diabetes mellitus, and colorectal cancer. All-cause mortality is also increased in men with sleep disturbances. For those with

Disruptions in aromatase expression in the brain, reproductive behavior, and secondary sexual characteristics in male guppies (Poecilia reticulata) induced by tributyltin.

Science.gov (United States)

Tian, Hua; Wu, Peng; Wang, Wei; Ru, Shaoguo

2015-05-01

Although bioaccumulation of tributyltin (TBT) in fish has been confirmed, information on possible effects of TBT on reproductive system of fish is still relatively scarce, particularly at environmentally relevant levels. To evaluate the adverse effects and intrinsic toxicological properties of TBT in male fish, we studied aromatase gene expression in the brain, sex steroid contents, primary and secondary sexual characteristics, and reproductive behavior in male guppies (Poecilia reticulata) exposed to tributyltin chloride at the nominal concentrations of 5, 50, and 500 ng/L for 28 days in a semi-static exposure system. Radioimmunoassay demonstrated that treatment with 50 ng/L TBT caused an increase in systemic levels of testosterone of male guppies. Gonopodial index, which showed a positive correlation with testosterone levels, was elevated in the 5 ng/L and 50 ng/L TBT treated groups. Real-time PCR revealed that TBT exposure had inhibiting effects on expression of two isoforms of guppy aromatase in the brain, and these changes at the molecular levels were associated with a disturbance of reproductive behavior of the individuals, as measured by decreases in frequencies of posturing, sigmoid display, and chase activities when males were paired with females. This study provides the first evidence that TBT can cause abnormalities of secondary sexual characteristics in teleosts and that suppression of reproductive behavior in teleosts by TBT is due to its endocrine-disrupting action as an aromatase inhibitor targeting the nervous system. Copyright © 2015 Elsevier B.V. All rights reserved.

Study of runaway current generation following disruptions in KSTAR

International Nuclear Information System (INIS)

Chen, Z Y; Kim, W C; Yu, Y W; England, A C; Yoo, J W; Hahn, S H; Yoon, S W; Lee, K D; Oh, Y K; Kwak, J G; Kwon, M

2013-01-01

The high fraction of runaway current conversion following disruptions has an important effect on the first wall for next-generation tokamaks. Because of the potentially severe consequences of a large full current runaway beam on the first wall in an unmitigated disruption, runaway suppression is given a high priority. The behavior of runaway currents both in spontaneous disruptions and in D 2 massive gas injection (MGI) shutdown experiments is investigated in the KSTAR tokamak. The experiments in KSTAR show that the toroidal magnetic field threshold, B T >2 T, for runaway generation is not absolute. A high fraction of runaway current conversion following spontaneous disruptions is observed at a much lower toroidal magnetic field of B T = 1.3 T. A dedicated fast valve for high-pressure gas injection with 39.7 bar is developed for the study of disruptions. A study of runaway current parameters shows that the conversion efficiency of pre-disruptive plasma currents into runaway current can reach over 80% both in spontaneous disruptions and in D 2 MGI shutdown experiments in KSTAR. (paper)

Committee Opinion No. 683: Behavior That Undermines a Culture of Safety.

Science.gov (United States)

2017-01-01

A key element of an organizational safety culture is maintaining an environment of professionalism that encourages communication and promotes high-quality care. Behavior that undermines a culture of safety, including disruptive or intimidating behavior, has a negative effect on the quality and safety of patient care. Intimidating behavior and disruptive behavior are unprofessional and should not be tolerated. Confronting disruptive individuals is difficult. Co-workers often are reluctant to report disruptive behavior because of fear of retaliation and the stigma associated with "blowing the whistle" on a colleague. Additionally, negative behavior of revenue-generating physicians may be overlooked because of concern about the perceived consequences of confronting them. The Joint Commission requires that hospitals establish a code of conduct that "defines acceptable behavior and behavior that undermines a culture of safety." Clear standards of behavior that acknowledge the consequences of disruptive and intimidating behavior must be established and communicated. Institutions and practices should develop a multifaceted approach to address disruptive behavior. Confidential reporting systems and assistance programs for physicians who exhibit disruptive behavior should be established. A concerted effort should be made within each organization to educate staff (ie, medical, nursing, and ancillary staff) about the potential negative effects of disruptive and inappropriate behavior. A clearly delineated hospital-wide policy and procedure relating to disruptive behavior should be developed and enforced by hospital administration. To preserve professional standing, physicians should understand how to respond to and mitigate the effect of complaints or reports.

Effectiveness of Cognitive- behavioral Group Therapy on Insomnia Symptoms in Students

Directory of Open Access Journals (Sweden)

A Abollahi

2015-04-01

Full Text Available Background & aim: Insomnias is associated with considerable problems in educational, vocational, social and familial performance. The purpose of present research was to investigate the effectiveness of Cognitive-Behavior group therapy on improvement of insomnia symptoms in students. Methods: The present clinical trial study was conducted on twenty-four students who were randomly assigned into two groups of case and the control (n = 12. The experimental group was participated in eight sessions of cognitive behavior therapy, while the control group received no intervention. Research tools include the Pittsburgh Sleep Quality Index and the Insomnia Severity Index that completed by both participants. Data were analyzed using ANOVA, t-test. Results: Analysis of covariance showed that the performance of cognitive behavioral therapy may improve symptoms and reduce the severity of insomnia in the experimental group compared with the control group (p < 0.05. Conclusion: Group cognitive-behavioral therapy is effective on symptoms of insomnia in students.

Can We Disrupt the Sensing of Honey Bees by the Bee Parasite Varroa destructor?

Science.gov (United States)

Eliash, Nurit; Singh, Nitin Kumar; Kamer, Yosef; Pinnelli, Govardhana Reddy; Plettner, Erika; Soroker, Victoria

2014-01-01

Background The ectoparasitic mite, Varroa destructor, is considered to be one of the most significant threats to apiculture around the world. Chemical cues are known to play a significant role in the host-finding behavior of Varroa. The mites distinguish between bees from different task groups, and prefer nurses over foragers. We examined the possibility of disrupting the Varroa – honey bee interaction by targeting the mite's olfactory system. In particular, we examined the effect of volatile compounds, ethers of cis 5-(2′-hydroxyethyl) cyclopent-2-en-1-ol or of dihydroquinone, resorcinol or catechol. We tested the effect of these compounds on the Varroa chemosensory organ by electrophysiology and on behavior in a choice bioassay. The electrophysiological studies were conducted on the isolated foreleg. In the behavioral bioassay, the mite's preference between a nurse and a forager bee was evaluated. Principal findings We found that in the presence of some compounds, the response of the Varroa chemosensory organ to honey bee headspace volatiles significantly decreased. This effect was dose dependent and, for some of the compounds, long lasting (>1 min). Furthermore, disruption of the Varroa volatile detection was accompanied by a reversal of the mite's preference from a nurse to a forager bee. Long-term inhibition of the electrophysiological responses of mites to the tested compounds was a good predictor for an alteration in the mite's host preference. Conclusions These data indicate the potential of the selected compounds to disrupt the Varroa - honey bee associations, thus opening new avenues for Varroa control. PMID:25226388

Can we disrupt the sensing of honey bees by the bee parasite Varroa destructor?

Directory of Open Access Journals (Sweden)

Nurit Eliash

Full Text Available BACKGROUND: The ectoparasitic mite, Varroa destructor, is considered to be one of the most significant threats to apiculture around the world. Chemical cues are known to play a significant role in the host-finding behavior of Varroa. The mites distinguish between bees from different task groups, and prefer nurses over foragers. We examined the possibility of disrupting the Varroa--honey bee interaction by targeting the mite's olfactory system. In particular, we examined the effect of volatile compounds, ethers of cis 5-(2'-hydroxyethyl cyclopent-2-en-1-ol or of dihydroquinone, resorcinol or catechol. We tested the effect of these compounds on the Varroa chemosensory organ by electrophysiology and on behavior in a choice bioassay. The electrophysiological studies were conducted on the isolated foreleg. In the behavioral bioassay, the mite's preference between a nurse and a forager bee was evaluated. PRINCIPAL FINDINGS: We found that in the presence of some compounds, the response of the Varroa chemosensory organ to honey bee headspace volatiles significantly decreased. This effect was dose dependent and, for some of the compounds, long lasting (>1 min. Furthermore, disruption of the Varroa volatile detection was accompanied by a reversal of the mite's preference from a nurse to a forager bee. Long-term inhibition of the electrophysiological responses of mites to the tested compounds was a good predictor for an alteration in the mite's host preference. CONCLUSIONS: These data indicate the potential of the selected compounds to disrupt the Varroa--honey bee associations, thus opening new avenues for Varroa control.

Can we disrupt the sensing of honey bees by the bee parasite Varroa destructor?

Science.gov (United States)

Eliash, Nurit; Singh, Nitin Kumar; Kamer, Yosef; Pinnelli, Govardhana Reddy; Plettner, Erika; Soroker, Victoria

2014-01-01

The ectoparasitic mite, Varroa destructor, is considered to be one of the most significant threats to apiculture around the world. Chemical cues are known to play a significant role in the host-finding behavior of Varroa. The mites distinguish between bees from different task groups, and prefer nurses over foragers. We examined the possibility of disrupting the Varroa--honey bee interaction by targeting the mite's olfactory system. In particular, we examined the effect of volatile compounds, ethers of cis 5-(2'-hydroxyethyl) cyclopent-2-en-1-ol or of dihydroquinone, resorcinol or catechol. We tested the effect of these compounds on the Varroa chemosensory organ by electrophysiology and on behavior in a choice bioassay. The electrophysiological studies were conducted on the isolated foreleg. In the behavioral bioassay, the mite's preference between a nurse and a forager bee was evaluated. We found that in the presence of some compounds, the response of the Varroa chemosensory organ to honey bee headspace volatiles significantly decreased. This effect was dose dependent and, for some of the compounds, long lasting (>1 min). Furthermore, disruption of the Varroa volatile detection was accompanied by a reversal of the mite's preference from a nurse to a forager bee. Long-term inhibition of the electrophysiological responses of mites to the tested compounds was a good predictor for an alteration in the mite's host preference. These data indicate the potential of the selected compounds to disrupt the Varroa--honey bee associations, thus opening new avenues for Varroa control.

Pursuing minimally disruptive medicine: disruption from illness and health care-related demands is correlated with patient capacity.

Science.gov (United States)

Boehmer, Kasey R; Shippee, Nathan D; Beebe, Timothy J; Montori, Victor M

2016-06-01

Chronic conditions burden patients with illness and treatments. We know little about the disruption of life by the work of dialysis in relation to the resources patients can mobilize, that is, their capacity, to deal with such demands. We sought to determine the disruption of life by dialysis and its relation to patient capacity to cope. We administered a survey to 137 patients on dialysis at an academic medical center. We captured disruption from illness and treatment, and physical, mental, personal, social, financial, and environmental aspects of patient capacity using validated scales. Covariates included number of prescriptions, hours spent on health care, existence of dependents, age, sex, and income level. On average, patients reported levels of capacity and disruption comparable to published levels. In multivariate regression models, limited physical, financial, and mental capacity were significantly associated with greater disruption. Patients in the top quartile of disruption had lower-than-expected physical, financial, and mental capacity. Our sample generally had capacity comparable to other populations and may be able to meet the demands imposed by treatment. Those with reduced physical, financial, and mental capacity reported higher disruption and represent a vulnerable group that may benefit from innovations in minimally disruptive medicine. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

An environmentally relevant endocrine-disrupting antiandrogen, vinclozolin, affects calling behavior of male Xenopus laevis.

Science.gov (United States)

Hoffmann, Frauke; Kloas, Werner

2010-09-01

Vinclozolin (VIN) is an antiandrogenic model substance as well as a common fungicide that can affect the endocrine system of vertebrates. The objective of this study was to investigate how VIN affects mate calling behavior of South African clawed frogs (Xenopus laevis) and whether it is effective at environmentally relevant concentrations. Male X. laevis were injected with human chorionic gonadotropin (hCG) to stimulate their androgen-controlled mate calling behavior and were treated with VIN at concentrations of 10(-6), 10(-8) and 10(-10)M. VIN at 10(-6)M reduced calling activity. Furthermore, the vocalization composition of VIN-treated X. laevis was altered. The call types advertisement calls and chirping are uttered by reproductively active males, whereas the call types growling, ticking, and rasping indicate a sexually unaroused state of a male. VIN at any of the tested concentrations led to a decrease in utterance of calls, which indicate a sexually aroused state of the males, and an increase in relative proportions of calls, indicating a sexually unaroused state of the males. Additionally, the mean duration of clicks and the number of accentuated clicks during the advertisement calls decreased at all concentrations of VIN. No significant differences were observed in any other temporal or spectral calling parameters between the treatments. This study illustrates that exposure to the antiandrogen VIN might result in a reduced reproductive success by altering mate calling behavior of X. laevis. Moreover, it suggests that the behavioral parameters examined in this study can be used as sensitive biomarkers for detecting antiandrogenic endocrine disrupting compounds in amphibians. Copyright (c) 2010 Elsevier Inc. All rights reserved.

Tailoring surface groups of carbon quantum dots to improve photoluminescence behaviors

International Nuclear Information System (INIS)

Tian, Ruixue; Hu, Shengliang; Wu, Lingling; Chang, Qing; Yang, Jinlong; Liu, Jun

2014-01-01

Highlights: • We develop a facile and green method to tailor surface groups. • Photoluminescence behaviors of carbon quantum dots are improved by tailoring their surface groups. • Highly luminescent efficiency is produced by amino-hydrothermal treatment of reduced carbon quantum dots. - Abstract: A facile and green method to tailor surface groups of carbon quantum dots (CQDs) is developed by hydrothermal treatment in an autoclave. The photoluminescence (PL) behaviors of CQDs depend on the types of surface groups. Highly efficient photoluminescence is obtained through amino-hydrothermal treatment of the CQDs reduced by NaBH 4 . The effects of surface groups on PL behavior are attributed to the degrees of energy band bending induced by surface groups

Quick profile-reorganization driven by helical field perturbation for suppressing tokamak major disruptions

International Nuclear Information System (INIS)

Yamazaki, K.; Kawahata, K.; Ando, R.

1986-09-01

Disruptive behavior of magnetic field configuration leading to tokamak major disruption is found to be controlled by a mild ''mini-disruption'' which is induced by the compact external modular multipole-field coils with m = 3/n = 2 dominant helical field component in the JIPP T-IIU tokamak. This mini-disruption ergodizes the m = 2/n = 1 magnetic island quickly but mildly and then prevents the profile of electron temperature from flattening. This quick profile-reorganization is effective to avoid the two-step disruption (pre- and major disuptions) responsible for the chatastrophic current termination. (author)

Disruptive Effects of Contingent Food on High-Probability Behavior

Science.gov (United States)

Frank-Crawford, Michelle A.; Borrero, John C.; Nguyen, Linda; Leon-Enriquez, Yanerys; Carreau-Webster, Abbey B.; DeLeon, Iser G.

2012-01-01

The delivery of food contingent on 10 s of consecutive toy engagement resulted in a decrease in engagement and a corresponding increase in other responses that had been previously reinforced with food. Similar effects were not observed when tokens exchangeable for the same food were delivered, suggesting that engagement was disrupted by the…

Kinetic and collision process effects on magnetic structures in pre-disruption phase of tokamak plasmas

Energy Technology Data Exchange (ETDEWEB)

Farshi, Esmaeil [Kyushu Univ., Advanced Energy Engineering Sciences, Kasuga, Fukuoka (Japan); Goudarzi, Shervin [AEOI, Plasma Physics Department, Tehran (Iran); Amrollahi, Reza [K-N Toosi Univ. of Technology, Tehran (Iran); Sato, Kohnosuke [Kyushu Univ., Research Institute for Applied Mechanics, Kasuga, Fukuoka (Japan)

2001-07-01

Oscillations of the parallel and perpendicular neutral fluxes that are observed during pre-disruption stage in recent experiments, show possibility of a structure in pre-disruption phase of tokamak plasmas. This structure oscillates simultaneously with the m=2 mode until the damping of this mode. The perpendicular component of this structure is greater than the parallel one. From other side, there are a good correlation between MHD activity and behavior of charge exchange neutrals, and an enough good correlation between time behavior of charge exchange flux with high energy and OV line radiation in pre-disruption phase. These may witness possibility of a mechanism of losses-excitation of inner transition with help of heavy particles in pre-disruption phase. This mechanism plays an important role in magnetic structures in pre-disruption phase. (author)

Kinetic and collision process effects on magnetic structures in pre-disruption phase of tokamak plasmas

International Nuclear Information System (INIS)

Farshi, Esmaeil; Goudarzi, Shervin; Amrollahi, Reza; Sato, Kohnosuke

2001-01-01

Oscillations of the parallel and perpendicular neutral fluxes that are observed during pre-disruption stage in recent experiments, show possibility of a structure in pre-disruption phase of tokamak plasmas. This structure oscillates simultaneously with the m=2 mode until the damping of this mode. The perpendicular component of this structure is greater than the parallel one. From other side, there are a good correlation between MHD activity and behavior of charge exchange neutrals, and an enough good correlation between time behavior of charge exchange flux with high energy and OV line radiation in pre-disruption phase. These may witness possibility of a mechanism of losses-excitation of inner transition with help of heavy particles in pre-disruption phase. This mechanism plays an important role in magnetic structures in pre-disruption phase. (author)

Non-disruptive tactics of suppression are superior in countering terrorism, insurgency, and financial panics.

Science.gov (United States)

Siegel, David A

2011-04-13

Suppressing damaging aggregate behaviors such as insurgency, terrorism, and financial panics are important tasks of the state. Each outcome of these aggregate behaviors is an emergent property of a system in which each individual's action depends on a subset of others' actions, given by each individual's network of interactions. Yet there are few explicit comparisons of strategies for suppression, and none that fully incorporate the interdependence of individual behavior. Here I show that suppression tactics that do not require the removal of individuals from networks of interactions are nearly always more effective than those that do. I find using simulation analysis of a general model of interdependent behavior that the degree to which such less disruptive suppression tactics are superior to more disruptive ones increases in the propensity of individuals to engage in the behavior in question. Thus, hearts-and-minds approaches are generally more effective than force in counterterrorism and counterinsurgency, and partial insurance is usually a better tactic than gag rules in quelling financial panics. Differences between suppression tactics are greater when individual incentives to support terrorist or insurgent groups, or susceptibilities to financial panic, are higher. These conclusions have utility for policy-makers seeking to end bloody conflicts and prevent financial panics. As the model also applies to mass protest, its conclusions provide insight as well into the likely effects of different suppression strategies undertaken by authoritarian regimes seeking to hold on to power in the face of mass movements seeking to end them.

Analysis of recent fuel-disruption experiments

International Nuclear Information System (INIS)

Kramer, J.M.; Kraft, T.E.; DiMelfi, R.J.; Fenske, G.R.; Gruber, E.E.

1982-01-01

Recent USDOE-sponsored DEH, FGR, and TREAT F series fuel-disruption experiments are analyzed with existing analytical models. The experiments are interpreted and the results used to evaluate the models. Calculations are presented using the FRAS3 fission-gas-behavior code and the DiMelfi-Deitrich fuel-response model

The Effects of Music and Group Stage on Group Leader and Member Behavior in Psychoeducational Groups for Children of Divorce

Science.gov (United States)

Cercone, Kristin; DeLucia-Waack, Janice

2012-01-01

This study examined the effects of music and group stage on group process and group leader and member behavior within 8-week psychoeducational groups for children of divorce. Audiotapes of group sessions were rated using the Interactional Process Analysis and the Group Sessions Ratings Scale. Both treatment groups were very similar in terms of…

The development of collective personality: the ontogenetic drivers of behavioral variation across groups

Directory of Open Access Journals (Sweden)

Sarah E Bengston

2014-12-01

Full Text Available For the past decade, the study of personality has become a topic on the frontier of behavioral ecology. However, most studies have focused on exploring inter-individual behavioral variation in solitary animals, and few account for the role that social interactions may have on the development of an individual’s personality. Moreover, a social group may exhibit collective personality: an emergent behavioral phenotype displayed at the group-level, which is not necessarily the sum or average of individual personalities within that group. The social environment, in many cases, can determine group success, which then influences the relative success of all the individuals in that group. In addition, group-level personality may itself evolve, subject to the same selection pressures as individual-level behavioral variation, when the group is a unit under selection. Therefore, we reason that understanding how collective personalities emerge and change over time will be imperative to understanding individual- and group-level behavioral evolution.Personality is considered to be fixed over an individual’s lifetime. However, behavior may shift throughout development, particularly during adolescence. Therefore, juvenile behavior should not be compared with adult behavior when assessing personality. Similarly, as conditions within a group and/or the local environment can shift, group behavior may similarly fluctuate as it matures. We discuss potential within-group factors, such as group initiation, group maturation, genetic make-up of the group, and the internal social environment, and external factors, such as well as how local environment may play a role in generating group-level personalities. There are a variety of studies that explore group development or quantify group personality, but few that integrate both processes. Therefore, we conclude by discussing potential ways to evaluate development of collective personality, and propose several focal

Disrupted functional brain networks in autistic toddlers

NARCIS (Netherlands)

Boersma, M.; Kemner, C.; Reus, M.A. de; Collin, G; Snijders, T.M.; Hofman, D.; Buitelaar, J.K.; Stam, C.J.; Heuvel, M.P. van den

2013-01-01

Communication and integration of information between brain regions plays a key role in healthy brain function. Conversely, disruption in brain communication may lead to cognitive and behavioral problems. Autism is a neurodevelopmental disorder that is characterized by impaired social interactions

The effect of group cognitive-behavioral therapy in reducing ...

African Journals Online (AJOL)

The effect of group cognitive-behavioral therapy in reducing aggression in patients with ... Journal of Fundamental and Applied Sciences ... The aim of this study was to investigate the effectiveness of cognitive-behavioral therapy (CBT) on ...

The Role of Co-Occurring Disruptive Behavior in the Clinical Presentation of Children and Adolescents with Anxiety in the Context of Autism Spectrum Disorders

Science.gov (United States)

Storch, Eric A.; Arnold, Elysse B.; Jones, Anna M.; Ale, Chelsea M.; Wood, Jeffrey J.; Ehrenreich-May, Jill; Lewin, Adam B.; Mutch, P. Jane; Murphy, Tanya K.

2012-01-01

This study explored the impact of disruptive behavior disorder (DBD) comorbidity on theoretically relevant correlates among 87 children and adolescents with autism spectrum disorders (ASD) and clinically significant anxiety. Relative to youth with ASD and anxiety alone, participants with ASD, anxiety, and DBD: (a) presented with significantly more…

Case Study in Evidence-Based Practice in Clinical Child and Adolescent Psychology: The Use of the Coping Power Program to Treat a 10-Year-Old Girl with Disruptive Behaviors

Science.gov (United States)

Lochman, John E.; Boxmeyer, Caroline; Powell, Nicole; Wojnaroski, Mary; Yaros, Anna

2007-01-01

This article describes the successful application of the Coping Power program by school-based clinicians to address a 10-year-old girl's disruptive behavior symptoms. Coping Power is an empirically supported cognitive-behavioral program for children at risk for serious conduct problems and their parents. The following case study illustrates the…

Disruptions in effort-based decision-making and consummatory behavior following antagonism of the dopamine D2 receptor.

Science.gov (United States)

Robles, Cindee F; Johnson, Alexander W

2017-03-01

Dopamine is known to influence motivational processes, however the precise role of this neurotransmitter remains a contentious issue. In the current study we sought to further characterize dopamine signaling in reward-based decision-making and consummatory behavior in mice, via lateral ventricle infusion of the dopamine D2 receptor antagonist eticlopride. In Experiment 1, we examined effort-based decision-making, in which mice had a choice between one lever, where a single response led to the delivery of a low value reward (2% sucrose); and a second lever, which led to a higher value reward (20% sucrose) that gradually required more effort to obtain. As the response schedule for the high value reward became more strict, low dose (4μg in 0.5μl) central infusions of eticlopride biased preference away from the high value reward, and toward the lever that led to the low value reward. Similarly, a higher dose of eticlopride (8μg in 0.5μl) also disrupted choice responding for the high value reward, however it did so by increasing omissions. In Experiment 2, we assessed the effects of eticlopride on consumption of 20% sucrose. The antagonist led to a dose-dependent reduction in intake, and through an analysis of licking microstructure, it was revealed that this in part reflected a reduction in the motivation to engage in consummatory behavior, rather than alterations in the evaluation of the reward. These results suggest that disruptions in D2 receptor signaling reduce the willingness to engage in effortful operant responding and consumption of a desirable outcome. Copyright © 2016 Elsevier B.V. All rights reserved.

Individual, group, and environmental influences on helping behavior in a social carnivore

Science.gov (United States)

Ausband, David E.; Mitchell, Michael S.; Bassing, Sarah B.; Morehouse, Andrea T.; Smith, Douglas W.; Stahler, Daniel R.; Struthers, Jennifer

2016-01-01

Variation in group composition and environment can affect helping behavior in cooperative breeders. Understanding of how group size, traits of individuals within groups, food abundance, and predation risk simultaneously influence helping behavior is limited. We evaluated pup-guarding behavior in gray wolves (Canis lupus) to assess how differences in individuals, groups, and environment affect helping behavior. We used data from 92 GPS-collared wolves in North America (2001–2012) to estimate individual pup-guarding rates. Individuals in groups with low helper-to-pup ratios spent more time guarding young than those in groups with more helpers, an indication of load-lightening. Female helpers guarded more than male helpers, but this relationship weakened as pups grew. Subset analyses including data on helper age and wolf and prey density showed such factors did not significantly influence pup-guarding rates. We show that characteristics of individuals and groups have strong influences on pup-guarding behavior in gray wolves, but environmental factors such as food abundance and predation risk from conspecifics were not influential.

Mystery Motivator: A Tier 1 Classroom Behavioral Intervention

Science.gov (United States)

Kowalewicz, Eva A.; Coffee, Gina

2014-01-01

This study is an examination of the effectiveness of the Mystery Motivator--an interdependent group contingency, variable-ratio, classwide intervention--as a tool for reducing disruptive classroom behavior in eight diverse general-education elementary school classrooms across seven different schools. The study was conducted using an ABAB, changing…

Group Development for Students with Emotional/Behavioral Disorders.

Science.gov (United States)

Rockwell, Sylvia; Guetzloe, Eleanor

1996-01-01

This article addresses effective techniques for teaching students with emotional disturbances and/or behavior disorders in group settings. Three stages of group development are described with specific teaching strategies for each stage identified and related to Maslow's hierarchy of needs, including needs for safety and trust, belonging and…

Group-Wise Herding Behavior in Financial Markets: An Agent-Based Modeling Approach

Science.gov (United States)

Kim, Minsung; Kim, Minki

2014-01-01

In this paper, we shed light on the dynamic characteristics of rational group behaviors and the relationship between monetary policy and economic units in the financial market by using an agent-based model (ABM), the Hurst exponent, and the Shannon entropy. First, an agent-based model is used to analyze the characteristics of the group behaviors at different levels of irrationality. Second, the Hurst exponent is applied to analyze the characteristics of the trend-following irrationality group. Third, the Shannon entropy is used to analyze the randomness and unpredictability of group behavior. We show that in a system that focuses on macro-monetary policy, steep fluctuations occur, meaning that the medium-level irrationality group has the highest Hurst exponent and Shannon entropy among all of the groups. However, in a system that focuses on micro-monetary policy, all group behaviors follow a stable trend, and the medium irrationality group thus remains stable, too. Likewise, in a system that focuses on both micro- and macro-monetary policies, all groups tend to be stable. Consequently, we find that group behavior varies across economic units at each irrationality level for micro- and macro-monetary policy in the financial market. Together, these findings offer key insights into monetary policy. PMID:24714635

Recovery of neurological function despite immediate sleep disruption following diffuse brain injury in the mouse: clinical relevance to medically untreated concussion.

Science.gov (United States)

Rowe, Rachel K; Harrison, Jordan L; O'Hara, Bruce F; Lifshitz, Jonathan

2014-04-01

We investigated the relationship between immediate disruption of posttraumatic sleep and functional outcome in the diffuse brain-injured mouse. Adult male C57BL/6 mice were subjected to moderate midline fluid percussion injury (n = 65; 1.4 atm; 6-10 min righting reflex time) or sham injury (n = 44). Cohorts received either intentional sleep disruption (minimally stressful gentle handling) or no sleep disruption for 6 h following injury. Following disruption, serum corticosterone levels (enzyme-linked immunosorbent assay) and posttraumatic sleep (noninvasive piezoelectric sleep cages) were measured. For 1-7 days postinjury, sensorimotor outcome was assessed by Rotarod and a modified Neurological Severity Score (NSS). Cognitive function was measured using Novel Object Recognition (NOR) and Morris water maze (MWM) in the first week postinjury. Neurotrauma research laboratory. Disrupting posttraumatic sleep for 6 h did not affect serum corticosterone levels or functional outcome. In the hour following the first dark onset, sleep-disrupted mice exhibited a significant increase in sleep; however, this increase was not sustained and there was no rebound of lost sleep. Regardless of sleep disruption, mice showed a time-dependent improvement in Rotarod performance, with brain-injured mice having significantly shorter latencies on day 7 compared to sham. Further, brain-injured mice, regardless of sleep disruption, had significantly higher NSS scores postinjury compared with sham. Cognitive behavioral testing showed no group differences among any treatment group measured by MWM and NOR. Short-duration disruption of posttraumatic sleep did not affect functional outcome, measured by motor and cognitive performance. These data raise uncertainty about posttraumatic sleep as a mechanism of recovery from diffuse brain injury.

Lactation exposure to BDE-153 damages learning and memory, disrupts spontaneous behavior and induces hippocampus neuron death in adult rats.

Science.gov (United States)

Zhang, Hongmei; Li, Xin; Nie, Jisheng; Niu, Qiao

2013-06-23

-down test was significantly increased in the 10mg/kg BDE-153 group at 2 months after treatment (P<0.05), and the BDE-153-treated rats' swimming times and distances in the target quadrant were significantly decreased at 1 month and 2 months after treatment (P<0.05 or P<0.01). These parameters were also significantly increased in the opposite quadrant at 1 month after treatment (P<0.05 or P<0.01). The spontaneous behavior was significantly reduced in the treated groups compared to the controls (P<0.05 or P<0.01). The severity of neurobehavioral dysfunction was dependent on the exposure dose of BDE-153, and worsened with age. Under an optical microscope, the treated rats' neurons in the CA3 region of the hippocampus were observed to be reduced and disarranged, and the cell junctions were loosened and the intercellular spaces were enlarged. Under a transmission electron microscope, the cell nucleus was observed to shrink; the chromatin was condensed and gathered near the nuclear membrane, the Nissl bodies and other organelles in the perikaryon were reduced, and the vacuole was observed to degenerate and even disappear. Moreover, compared to the controls, the cell apoptosis rates were significantly increased in the 5 and 10mg/kg BDE-153 groups (P<0.05), and the LDH activity was significantly increased in the 10mg/kg BDE-153 groups (P<0.01). Lactation exposure to BDE-153 damaged adult rats' learning and memory abilities, disrupted their spontaneous behavior (hypoactivity) and induced hippocampus neuron apoptosis. Crown Copyright © 2013. Published by Elsevier B.V. All rights reserved.

Disruption avoidance in the SINP-Tokamak by means of electrode-biasing at the plasma edge

Energy Technology Data Exchange (ETDEWEB)

Basu, Debjyoti [Saha Institute of Nuclear Physics, 1/AF-Bidhannagar, Kolkata 700064, WB (India); Instituto de Ciencias Nucleares-UNAM, Mexico D.F. 04510 (Mexico); Pal, Rabindranath [Saha Institute of Nuclear Physics, 1/AF-Bidhannagar, Kolkata 700064, WB (India); Martinell, Julio J. [Instituto de Ciencias Nucleares-UNAM, Mexico D.F. 04510 (Mexico); Ghosh, Joydeep; Chattopadhyay, Prabal K. [Institute for Plasma Research, Gandhinagar (India)

2013-05-15

Control of plasma disruption by a biased edge electrode is reported in SINP-Tokamak. The features that characterize a plasma disruption are reduced with increasing bias potential. The disruption can be completely suppressed with the concomitant stabilization of observed MHD modes that are allegedly precursors of the disruption. An m = 3/n = 1 tearing mode, which apparently causes disruption can be stabilized when a negative biasing potential is applied near the edge. These changes in the disruptive behavior with edge biasing are hypothesized to be due to changes in the current density profile.

Disruption avoidance in the SINP-Tokamak by means of electrode-biasing at the plasma edge

International Nuclear Information System (INIS)

Basu, Debjyoti; Pal, Rabindranath; Martinell, Julio J.; Ghosh, Joydeep; Chattopadhyay, Prabal K.

2013-01-01

Control of plasma disruption by a biased edge electrode is reported in SINP-Tokamak. The features that characterize a plasma disruption are reduced with increasing bias potential. The disruption can be completely suppressed with the concomitant stabilization of observed MHD modes that are allegedly precursors of the disruption. An m = 3/n = 1 tearing mode, which apparently causes disruption can be stabilized when a negative biasing potential is applied near the edge. These changes in the disruptive behavior with edge biasing are hypothesized to be due to changes in the current density profile

Disrupted resting-state functional connectivity in minimally treated chronic schizophrenia.

Science.gov (United States)

Wang, Xijin; Xia, Mingrui; Lai, Yunyao; Dai, Zhengjia; Cao, Qingjiu; Cheng, Zhang; Han, Xue; Yang, Lei; Yuan, Yanbo; Zhang, Yong; Li, Keqing; Ma, Hong; Shi, Chuan; Hong, Nan; Szeszko, Philip; Yu, Xin; He, Yong

2014-07-01

The pathophysiology of chronic schizophrenia may reflect long term brain changes related to the disorder. The effect of chronicity on intrinsic functional connectivity patterns in schizophrenia without the potentially confounding effect of antipsychotic medications, however, remains largely unknown. We collected resting-state fMRI data in 21 minimally treated chronic schizophrenia patients and 20 healthy controls. We computed regional functional connectivity strength for each voxel in the brain, and further divided regional functional connectivity strength into short-range regional functional connectivity strength and long-range regional functional connectivity strength. General linear models were used to detect between-group differences in these regional functional connectivity strength metrics and to further systematically investigate the relationship between these differences and clinical/behavioral variables in the patients. Compared to healthy controls, the minimally treated chronic schizophrenia patients showed an overall reduced regional functional connectivity strength especially in bilateral sensorimotor cortex, right lateral prefrontal cortex, left insula and right lingual gyrus, and these regional functional connectivity strength decreases mainly resulted from disruption of short-range regional functional connectivity strength. The minimally treated chronic schizophrenia patients also showed reduced long-range regional functional connectivity strength in the bilateral posterior cingulate cortex/precuneus, and increased long-range regional functional connectivity strength in the right lateral prefrontal cortex and lingual gyrus. Notably, disrupted short-range regional functional connectivity strength mainly correlated with duration of illness and negative symptoms, whereas disrupted long-range regional functional connectivity strength correlated with neurocognitive performance. All of the results were corrected using Monte-Carlo simulation. This

Disruptive change and the reconfiguration of innovation ecosystems

NARCIS (Netherlands)

Dedehayir, Ozgur; Ortt, J.R.; Seppänen, Marko

2017-01-01

This conceptual paper extends the traditional view of disruptive change, which considers the effects of rivalry between an incumbent and new entrant firm, by examining the impact of disruption upon the ‘innovation ecosystem’ in its entirety – the group of organisations that collaborate in

Connection Between Group Conformity and Free Sex Behavior in Adolescence

OpenAIRE

Cynthia, Trida

2007-01-01

The aim of this research is to test empirically the connection between group conformity and free sex in adolescence. The method was using 59 statements of group conformity scale and 60 statements of free sex behavior in adolescence. The score was giving depend on favorable and unfavorable statements. Coefficient validity for group conformity was from 0,2551-0,6274 and 0,8038 for coefficient reliability. Coefficient validity for free sex behavior in adolescence was from 0,3706-0,7953 and 0,956...

The Effects of Classroom Interventions on Off-Task and Disruptive Classroom Behavior in Children with Symptoms of Attention-Deficit/Hyperactivity Disorder: A Meta-Analytic Review.

Directory of Open Access Journals (Sweden)

Geraldina F Gaastra

Full Text Available Children with attention-deficit/hyperactivity disorder (ADHD often exhibit problem behavior in class, which teachers often struggle to manage due to a lack of knowledge and skills to use classroom management strategies. The aim of this meta-analytic review was to determine the effectiveness of several types of classroom interventions (antecedent-based, consequence-based, self-regulation, combined that can be applied by teachers in order to decrease off-task and disruptive classroom behavior in children with symptoms of ADHD. A second aim was to identify potential moderators (classroom setting, type of measure, students' age, gender, intelligence, and medication use. Finally, it was qualitatively explored whether the identified classroom interventions also directly or indirectly affected behavioral and academic outcomes of classmates. Separate meta-analyses were performed on standardized mean differences (SMDs for 24 within-subjects design (WSD and 76 single-subject design (SSD studies. Results showed that classroom interventions reduce off-task and disruptive classroom behavior in children with symptoms of ADHD (WSDs: MSMD = 0.92; SSDs: MSMD = 3.08, with largest effects for consequence-based (WSDs: MSMD = 1.82 and self-regulation interventions (SSDs: MSMD = 3.61. Larger effects were obtained in general education classrooms than in other classroom settings. No reliable conclusions could be formulated about moderating effects of type of measure and students' age, gender, intelligence, and medication use, mainly because of power problems. Finally, classroom interventions appeared to also benefit classmates' behavioral and academic outcomes.

The Implementation of a Video-Enhanced Aikido-Based School Violence Prevention Training Program To Reduce Disruptive and Assaultive Behaviors among Severely Emotionally Disturbed Adolescents.

Science.gov (United States)

Edelman, Andrew J.

The martial art of Aikido was used as an intervention with 15 middle and high school students with severe emotional disturbances in an alternative educational setting. Students with an extensive history of violently disruptive and assaultive behaviors were trained for 12 weeks in this nonviolent Japanese martial art in order to achieve the…

Sleep Disruption in Hematopoietic Cell Transplant Recipients: Prevalence, Severity, and Clinical Management

Science.gov (United States)

Jim, Heather S.L.; Evans, Bryan; Jeong, Jiyeon M.; Gonzalez, Brian D.; Johnston, Laura; Nelson, Ashley M.; Kesler, Shelli; Phillips, Kristin M.; Barata, Anna; Pidala, Joseph; Palesh, Oxana

2014-01-01

Sleep disruption is common among hematopoietic cell transplant (HCT) recipients, with over 50% of patients experiencing sleep disruption pre-transplant, up to 82% experiencing moderate to severe sleep disruption during hospitalization for transplant, and up to 43% in the post-transplant period. These rates of sleep disruption are substantially higher than the general population. Although sleep disruption can be distressing to patients and contribute to diminished quality of life, it is rarely discussed during clinical visits. The goal of the current review is to draw attention to sleep disruption as a clinical problem in HCT in order to facilitate patient education, intervention, and research. The review opens with a discussion of sleep disruption measurement and clinical diagnosis of sleep disorders. An overview of the prevalence, severity, and chronicity of sleep disruption and disorders in patients receiving HCT follows. Current evidence regarding sociodemographic and clinical predictors of sleep disruption and disorders is summarized. The review concludes with suggestions for behavioral and pharmacologic management of sleep disruption and disorders as well as directions for future research. PMID:24747335

Introduction: Multilingual Behavior in Youth Groups

Directory of Open Access Journals (Sweden)

Jens Normann Jørgensen

2004-01-01

Full Text Available This introduction reviews some of the major work on bilingual and multilingual children and adolescents in Scandinavia, from Kotsinas (1985 and Boyd (1985 to the present. The introduction was originally published in J. N. Jørgensen (ed. 2001: Multilingual behavior in Youth Groups, Copenhagen Studies in Bilingualism, The Køge Series, Volume K11, Danish University of Education.

Behavioral response and pain perception to computer controlled local anesthetic delivery system and cartridge syringe

Directory of Open Access Journals (Sweden)

T D Yogesh Kumar

2015-01-01

Full Text Available Aim: The present study evaluated and compared the pain perception, behavioral response, physiological parameters, and the role of topical anesthetic administration during local anesthetic administration with cartridge syringe and computer controlled local anesthetic delivery system (CCLAD. Design: A randomized controlled crossover study was carried out with 120 children aged 7-11 years. They were randomly divided into Group A: Receiving injection with CCLAD during first visit; Group B: Receiving injection with cartridge syringe during first visit. They were further subdivided into three subgroups based on the topical application used: (a 20% benzocaine; (b pressure with cotton applicator; (c no topical application. Pulse rate and blood pressure were recorded before and during injection procedure. Objective evaluation of disruptive behavior and subjective evaluation of pain were done using face legs activity cry consolability scale and modified facial image scale, respectively. The washout period between the two visits was 1-week. Results: Injections with CCLAD produced significantly lesser pain response, disruptive behavior (P < 0.001, and pulse rate (P < 0.05 when compared to cartridge syringe injections. Application of benzocaine produced lesser pain response and disruptive behavior when compared to the other two subgroups, although the result was not significant. Conclusion: Usage of techniques which enhance behavioral response in children like injections with CCLAD can be considered as a possible step toward achieving a pain-free pediatric dental practice.

Non-disruptive tactics of suppression are superior in countering terrorism, insurgency, and financial panics.

Directory of Open Access Journals (Sweden)

David A Siegel

Full Text Available BACKGROUND: Suppressing damaging aggregate behaviors such as insurgency, terrorism, and financial panics are important tasks of the state. Each outcome of these aggregate behaviors is an emergent property of a system in which each individual's action depends on a subset of others' actions, given by each individual's network of interactions. Yet there are few explicit comparisons of strategies for suppression, and none that fully incorporate the interdependence of individual behavior. METHODS AND FINDINGS: Here I show that suppression tactics that do not require the removal of individuals from networks of interactions are nearly always more effective than those that do. I find using simulation analysis of a general model of interdependent behavior that the degree to which such less disruptive suppression tactics are superior to more disruptive ones increases in the propensity of individuals to engage in the behavior in question. CONCLUSIONS: Thus, hearts-and-minds approaches are generally more effective than force in counterterrorism and counterinsurgency, and partial insurance is usually a better tactic than gag rules in quelling financial panics. Differences between suppression tactics are greater when individual incentives to support terrorist or insurgent groups, or susceptibilities to financial panic, are higher. These conclusions have utility for policy-makers seeking to end bloody conflicts and prevent financial panics. As the model also applies to mass protest, its conclusions provide insight as well into the likely effects of different suppression strategies undertaken by authoritarian regimes seeking to hold on to power in the face of mass movements seeking to end them.

Cognitive behavioral group therapy versus psychoeducational intervention in Parkinson's disease.

Science.gov (United States)

Berardelli, Isabella; Bloise, Maria Carmela; Bologna, Matteo; Conte, Antonella; Pompili, Maurizio; Lamis, Dorian A; Pasquini, Massimo; Fabbrini, Giovanni

2018-01-01

The aim of the current study was to evaluate whether cognitive behavioral group therapy has a positive impact on psychiatric, and motor and non-motor symptoms in Parkinson's disease (PD). We assigned 20 PD patients with a diagnosis of psychiatric disorder to either a 12-week cognitive behavioral therapy (CBT) group or a psychoeducational protocol. For the neurological examination, we administered the Unified Parkinson's Disease Rating Scale and the non-motor symptoms scale. The severity of psychiatric symptoms was assessed by means of the Hamilton Depression Rating Scale, the Hamilton Anxiety Rating Scale, the Brief Psychiatric Rating Scale, and the Clinical Global Impressions. Cognitive behavioral group therapy was effective in treating depression and anxiety symptoms as well as reducing the severity of non-motor symptoms in PD patients; whereas, no changes were observed in PD patients treated with the psychoeducational protocol. CBT offered in a group format should be considered in addition to standard drug therapy in PD patients.

Prior exposure to interpersonal violence and long-term treatment response for boys with a disruptive behavior disorder.

Science.gov (United States)

Shenk, Chad E; Dorn, Lorah D; Kolko, David J; Rausch, Joseph R; Insana, Salvatore P

2014-10-01

Interpersonal violence (IPV) is common in children with a disruptive behavior disorder (DBD) and increases the risk for greater DBD symptom severity, callous-unemotional (CU) traits, and neuroendocrine disruption. Thus, IPV may make it difficult to change symptom trajectories for families receiving DBD interventions given these relationships. The current study examined whether IPV prior to receiving treatment for a DBD predicted trajectories of a variety of associated outcomes, specifically DBD symptoms, CU traits, and cortisol concentrations. Boys with a DBD diagnosis (N = 66; age range = 6-11 years; 54.5% of whom experienced IPV prior to treatment) of either oppositional defiant disorder or conduct disorder participated in a randomized clinical trial and were assessed 3 years following treatment. Multilevel modeling demonstrated that prior IPV predicted smaller rates of change in DBD symptoms, CU traits, and cortisol trajectories, indicating less benefit from intervention. The effect size magnitudes of IPV were large for each outcome (d = 0.88-1.07). These results suggest that IPV is a predictor of the long-term treatment response for boys with a DBD. Including trauma-focused components into existing DBD interventions may be worth testing to improve treatment effectiveness for boys with a prior history of IPV. Copyright © 2014 International Society for Traumatic Stress Studies.

Short-term exposure to dim light at night disrupts rhythmic behaviors and causes neurodegeneration in fly models of tauopathy and Alzheimer's disease.

Science.gov (United States)

Kim, Mari; Subramanian, Manivannan; Cho, Yun-Ho; Kim, Gye-Hyeong; Lee, Eunil; Park, Joong-Jean

2018-01-08

The accumulation and aggregation of phosphorylated tau proteins in the brain are the hallmarks for the onset of Alzheimer's disease (AD). In addition, disruptions in circadian rhythms (CRs) with altered sleep-wake cycles, dysregulation of locomotion, and increased memory defects have been reported in patients with AD. Drosophila flies that have an overexpression of human tau protein in neurons exhibit most of the symptoms of human patients with AD, including locomotion defects and neurodegeneration. Using the fly model for tauopathy/AD, we investigated the effects of an exposure to dim light at night on AD symptoms. We used a light intensity of 10 lux, which is considered the lower limit of light pollution in many countries. After the tauopathy flies were exposed to the dim light at night for 3 days, the flies showed disrupted CRs, altered sleep-wake cycles due to increased pTau proteins and neurodegeneration, in the brains of the AD flies. The results indicate that the nighttime exposure of tauopathy/AD model Drosophila flies to dim light disrupted CR and sleep-wake behavior and promoted neurodegeneration. Copyright © 2017 Elsevier Inc. All rights reserved.

An analysis of recent fuel disruption experiments

International Nuclear Information System (INIS)

Kramer, J.M.; Kraft, T.E.; Dimelfi, R.J.; Fenske, G.R.; Gruber, E.E.

1982-01-01

Recent USDOE-Sponsored DEH, FGR, and TREAT F series fuel disruption experiments are analyzed with existing analytical models. The experiments are interpreted and the results used to evaluate the models. Calculations are presented using the FRAS3 fission gas behavior code and the DiMelfi-Deitrich fuel response model

Risk of Hyperprolactinemia and Sexual Side Effects in Males 10-20 Years Old Diagnosed with Autism Spectrum Disorders or Disruptive Behavior Disorder and Treated with Risperidone

NARCIS (Netherlands)

Roke, Yvette; Buitelaar, Jan K.; Boot, Annemieke M.; Tenback, Diederik; van Harten, Peter N.

2012-01-01

Objective: The aim of this study was to investigate the long-term treatment effects of risperidone on prolactin levels and prolactin-related side effects in pubertal boys with autism spectrum disorders (ASD) and disruptive behavior disorders (DBD). Method: Physical healthy 10-20-year-old males with

In-core fuel disruption experiments simulating LOF accidents for homogeneous and heterogeneous core LMFBRs: FD2/4 series

International Nuclear Information System (INIS)

Wright, S.A.; Mast, P.K.; Schumacher, Gustav; Fischer, E.A.

1982-01-01

A series of Fuel Disruption (FD) experiments simulating LOF accidents transients for homogeneous- and heterogeneous-core LMFBRs is currently being performed in the Annular Core Research Reactor at SNL. The test fuel is observed with high-speed cinematography to determine the timing and the mode of the fuel disruption. The five experiments performed to date show that the timing and mode of fuel disruption depend on the power level, fuel temperature (after preheat and at disruption), and the fuel temperature gradient. Two basic modes of fuel disruption were observed; solid-state disruption and liquid-state swelling followed by slumping. Solid-state dispersive fuel behavior (several hundred degrees prior to fuel melting) is only observed at high power levels (6P 0 ), low preheat temperatures (2000 K), and high thermal gradients (2800 K/mm). The swelling/slumping behavior was observed in all cases near the time of fuel melting. Computational models have been developed that predict the fuel disruption modes and timing observed in the experiments

Dynamical behavior of price forecasting in structures of group correlations

Science.gov (United States)

Lim, Kyuseong; Kim, Soo Yong; Kim, Kyungsik

2015-07-01

We investigate the prediction of the future prices from the structures and the networks of the companies in special financial groups. After the financial group network has been constructed from the value of the high cross-correlation, each company in a group is simulated and analyzed how it buys or sells stock is anaylzed and how it makes rational investments is forecasted. In the shortmemory behavior rather than the long-memory behavior, each company among a group can make a rational investment decision by using a stochastic evolution rule in the financial network. In particular, we simulate and analyze the investment situation in connection with the empirical data and the simulated result.

The Social Functions of Antisocial Behavior: Considerations for School Violence Prevention Strategies for Students with Disabilities

Science.gov (United States)

Farmer, Thomas W.; Lane, Kathleen L.; Lee, David L.; Hamm, Jill V.; Lambert, Kerrylin

2012-01-01

Research on school social dynamics suggests that antisocial behavior is often supported by peer group processes particularly during late childhood and adolescence. Building from a social interactional framework, this article explores how information on the social functions of aggressive and disruptive behavior may help to guide function-based…

Runaway electrons beams in ITER disruptions

International Nuclear Information System (INIS)

Fleischmann, H.H.

1993-01-01

In agreement with the initial projections, the potential generation of runaway beams in disruptions of ITER discharges was performed. This analysis was based on the best-available present projections of plasma parameters existing in large-tokamak disruptions. Using these parameters, the potential contributions from various basic mechanisms for the generation of runway electrons were estimated. The envisioned mechanisms included (i) the well-known Dreicer process (assuming an evaporation of the runways from the thermal distribution), (ii) the seeding of runaway beams resulting from the potential presence of trapped high-temperature electrons from the original discharge still remaining in the disruption plasma at time of reclosure of the magnetic surfaces, and (iii) the generation of runaway beams through avalanche exponentiation of low-level seed runaways resulting via close collisions of existing runaways with cold plasma electrons. Finally, the prospective behavior of the any generated runaway beams -- in particular during their decay -- as well as their potential avoidance and/or damage controlled extraction through the use of magnetic perturbation fields also was considered in some detail

Integrating a Social Behavior Intervention during Small Group Academic Instruction Using a Total Group Criterion Intervention

Science.gov (United States)

Rodriguez, Billie Jo; Anderson, Cynthia M.

2014-01-01

Total group contingencies, a variation of interdependent group contingencies, provide educators with an efficient and effective mechanism to improve social behavior and increase academic skills. Their utility has not been examined in small educational groups. This is unfortunate as supplemental instruction frequently is delivered in small group…

Interpersonal processes in psychodynamic-interpersonal and cognitive behavioral group therapy: a systematic case study of two groups.

Science.gov (United States)

Tasca, Giorgio A; Foot, Meredith; Leite, Catherine; Maxwell, Hilary; Balfour, Louise; Bissada, Hany

2011-09-01

This mixed method systematic case study applied an interpersonal stage model of the therapeutic process to examine interpersonal processes among a highly adherent Group Psychodynamic-Interpersonal Psychotherapy (GPIP) therapist and a highly adherent Group Cognitive Behavioral Therapy (GCBT) therapist and their groups of binge eating disordered (BED) patients. This is the first case study to apply the interpersonal stage model of psychotherapy to compare GCBT and GPIP methods and the first to apply the model to group therapy. Early-, middle-, and late-stage transcribed video recordings of sequential interactions among therapists and patients in each of these two time-limited group therapies were analyzed with the Structural Analysis of Social Behavior (SASB). We also provide qualitative presentations of the transcripts from each stage as context for the quantitative analyses. BED patients in both groups achieved positive outcomes for binge eating and depression. Consistent with their treatment model, the GPIP therapist was more autonomy-giving, whereas the GCBT therapist was more controlling/directive. The GPIP therapist and her group had high levels of interpersonal complementary interaction sequences in the early stage followed by lower complementarity in the middle stage. The GCBT therapist and her group showed a high-low-high pattern of complementarity across the three stage of therapy. However, overall the GPIP group had higher levels complementarity than the GCBT group. This mixed method case study of group processes based on an interpersonal stage model of psychotherapy suggested specific therapist behaviors in each modality to maximize positive therapeutic interactions at each stage of group therapy. (c) 2011 APA, all rights reserved.

Disrupting circadian rhythms in rats induces retrograde amnesia

NARCIS (Netherlands)

Fekete, Mátyás; Ree, J.M. van; Niesink, Raymond J.M.; Wied, D. de

1985-01-01

Disrupting circadian organization in rats by phase-shifting the illumination cycle or by exposure to a reversed day/night cycle or to continuous light, resulted in retrograde amnesia for passive avoidance behavior. This retrograde amnesia induced by phase-shifting lasted at least 2 days, and

One (rating) from many (observations): Factors affecting the individual assessment of voice behavior in groups.

Science.gov (United States)

Podsakoff, Nathan P; Maynes, Timothy D; Whiting, Steven W; Podsakoff, Philip M

2015-07-01

This article reports an investigation into how individuals form perceptions of overall voice behavior in group contexts. More specifically, the authors examine the effect of the proportion of group members exhibiting voice behavior in the group, the frequency of voice events in the group, and the measurement item referent (group vs. individual) on an individual's ratings of group voice behavior. In addition, the authors examine the effect that measurement item referent has on the magnitude of the relationship observed between an individual's ratings of group voice behavior and perceptions of group performance. Consistent with hypotheses, the results from 1 field study (N = 220) and 1 laboratory experiment (N = 366) indicate that: (a) When group referents were used, raters relied on the frequency of voice events (and not the proportion of group members exhibiting voice) to inform their ratings of voice behavior, whereas the opposite was true when individual-referent items were used, and (b) the magnitude of the relationship between observers' ratings of group voice behavior and their perceptions of group performance was higher when raters used group-referent, as opposed to an individual-referent, items. The authors discuss the implications of their findings for scholars interested in studying behavioral phenomena occurring in teams, groups, and work units in organizational behavior research. (c) 2015 APA, all rights reserved).

Children's Oncology Group's 2013 blueprint for research: behavioral science.

Science.gov (United States)

Noll, Robert B; Patel, Sunita K; Embry, Leanne; Hardy, Kristina K; Pelletier, Wendy; Annett, Robert D; Patenaude, Andrea; Lown, E Anne; Sands, Stephen A; Barakat, Lamia P

2013-06-01

Behavioral science has long played a central role in pediatric oncology clinical service and research. Early work focused on symptom relief related to side effects of chemotherapy and pain management related to invasive medical procedures. As survival rates improved, the focused has shifted to examination of the psychosocial impact, during and after treatment, of pediatric cancer and its treatment on children and their families. The success of the clinical trials networks related to survivorship highlights an even more critical role in numerous domains of psychosocial research and care. Within the cooperative group setting, the field of behavioral science includes psychologists, social workers, physicians, nurses, and parent advisors. The research agenda of this group of experts needs to focus on utilization of psychometrically robust measures to evaluate the impact of treatment on children with cancer and their families during and after treatment ends. Over the next 5 years, the field of behavioral science will need to develop and implement initiatives to expand use of standardized neurocognitive and behavior batteries; increase assessment of neurocognition using technology; early identification of at-risk children/families; establish standards for evidence-based psychosocial care; and leverage linkages with the broader behavioral health pediatric oncology community to translate empirically supported research clinical trials care to practice. Copyright © 2012 Wiley Periodicals, Inc.

Investigating Disruption

DEFF Research Database (Denmark)

Lundgaard, Stine Schmieg; Rosenstand, Claus Andreas Foss

This book shares knowledge collected from 2015 and onward within the Consortium for Digital Disruption anchored at Aalborg University (www.dd.aau.dk). Evidenced by this publication, the field of disruptive innovation research has gone through several stages of operationalizing the theory. In recent...... years, researchers are increasingly looking back towards the origins of the theory in attempts to cure it from its most obvious flaws. This is especially true for the use of the theory in making predictions about future disruptions. In order to continue to develop a valuable theory of disruption, we...... find it useful to first review what the theory of disruptive innovation initially was, how it has developed, and where we are now. A cross section of disruptive innovation literature has been reviewed in order to form a general foundation from which we might better understand the changing world...

An assessment of disruption erosion in ITER environment

International Nuclear Information System (INIS)

Hassanein, A.; Konkashbaev, I.

1994-01-01

The behavior of divertor materials during a major disruption in ITER is very important for the successful and reliable operation of the reactor. Erosion of material surfaces due to the thermal energy dump can severely limit the lifetime of the plasma facing components therefore degrading reactor economic feasibility. A comprehensive numerical model recently developed is used in this analysis in which all major physical processes taking place during plasma-material interactions are included. Models to account for material thermal evolution, plasma-vapor interaction physics, and models for hydrodynamic radiation transport in the developed vapor cloud are implemented in a self-consistent manner to realistically assess the disruption damage. The extent of the self-protection from the developed vapor cloud in front of the incoming plasma particles is critically important in determining the overall disruption lifetime. The aim of this study is to estimate the divertor lifetime for a range of reactor conditions. Candidate materials such as beryllium and graphite are both considered in this analysis. The dependence of the divertor disruption lifetime on the characteristics of plasma-vapor interaction zone for incident plasma ions and electrons is analyzed and discussed. The effect of uncertainties in reactor disruption conditions on the overall divertor erosion lifetime is also analyzed

Effect of Environmental Enrichment on Singly- and Group-Housed Squirrel Monkeys

Science.gov (United States)

Spring, Sarah E.; Clifford, James O.; Tomko, David L.; Hargens, Alan R. (Technical Monitor)

1996-01-01

Nonhuman primates display an interest in novel places, habituate to new situations, and spend most of their daily activity in the wild in large groups engaging in feeding behaviors. Captivity changes these behaviors, and disrupts normal social hierarchies. In captivity, animals may exhibit stereotypical behaviors which are thought to indicate decreased psychological well-being (PWB). If an animal's behaviors can be made to approach those seen in the wild, and stereotypical behaviors are minimal it is assumed that PWB is adequate. Environmental enrichment (EE) devices have been used to address the Animal Welfare Act's requirement that the PWB of captive nonhuman primates be considered. The purpose of the present study was to examine whether various EE devices improve the PWB of captive squirrel monkeys. The present study used behavioral observation to quantify the effectiveness of several EE devices in reducing stereotypical behaviors in squirrel monkeys housed singly or in groups. Results showed that the EE devices used did not affect the expression of normal or stereotypical behaviors, but that the type of housing did.

Adolescents' perception of peer groups: Psychological, behavioral, and relational determinants.

Science.gov (United States)

Lee, Seungyoon; Foote, Jeremy; Wittrock, Zachary; Xu, Siyu; Niu, Li; French, Doran C

2017-07-01

Adolescents' social cognitive understanding of their social world is often inaccurate and biased. Focusing on peer groups, this study examines how adolescents' psychological, behavioral, and relational characteristics influence the extent to which they accurately identify their own and others' peer groups. Analyses were conducted with a sample of 1481 seventh- and tenth-grade Chinese students who are embedded with 346 peer groups. Overall, females and older students had more accurate perceptions. In addition, lower self-esteem, higher indegree centrality, and lower betweenness centrality in the friendship network predicted more accurate perception of one's own groups, whereas higher academic performance and lower betweenness centrality in the friendship network predicted more accurate perception of others' groups. Implications for understanding the connection between adolescents' psychological and behavioral traits, social relationships, and social cognition are discussed. Copyright © 2016 Elsevier Inc. All rights reserved.

Group colocation behavior in technological social networks.

Directory of Open Access Journals (Sweden)

Chloë Brown

Full Text Available We analyze two large datasets from technological networks with location and social data: user location records from an online location-based social networking service, and anonymized telecommunications data from a European cellphone operator, in order to investigate the differences between individual and group behavior with respect to physical location. We discover agreements between the two datasets: firstly, that individuals are more likely to meet with one friend at a place they have not visited before, but tend to meet at familiar locations when with a larger group. We also find that groups of individuals are more likely to meet at places that their other friends have visited, and that the type of a place strongly affects the propensity for groups to meet there. These differences between group and solo mobility has potential technological applications, for example, in venue recommendation in location-based social networks.

The influence of plasma motion on disruption generated runaway electrons

International Nuclear Information System (INIS)

Russo, A.J.

1991-01-01

One of the possible consequences of disruptions is the generation of runaway electrons which can impact plasma facing components and cause damage due to high local energy deposition. This problem becomes more serious as the machine size and plasma current increases. Since large size and high currents are characteristics of proposed future machines, control of runaway generation is an important design consideration. A lumped circuit model for disruption runaway electron generation indicates that control circuitry on strongly influence runaway behavior. A comparison of disruption data from several shots on JET and D3-D with model results, demonstrate the effects of plasma motion on runaway number density and energy. 6 refs., 12 figs

Comparison of risperidone and aripiprazole in the treatment of preschool children with disruptive behavior disorder and attention deficit-hyperactivity disorder: A randomized clinical trial

Directory of Open Access Journals (Sweden)

Parvin Safavi

2016-01-01

Full Text Available Although pharmacotherapy with atypical antipsychotics is common in child psychiatry, there has been little research on this issue. To compare the efficacy and safety of risperidone and aripiprazole in the treatment of preschool children with disruptive behavior disorders comorbid with attention deficit-hyperactivity disorder (ADHD. Randomized clinical trial conducted in a university-affiliated child psychiatry clinic in southwest Iran. Forty 3-6-year-old children, diagnosed with oppositional defiant disorder comorbid with ADHD, were randomized to an 8-week trial of treatment with risperidone or aripiprazole (20 patients in each group. Assessment was performed by Conners′ rating scale-revised and clinical global impressions scale, before treatment, and at weeks 2, 4, and 8 of treatment. The data were analyzed by SPSS version 16. Mean scores between the two groups were compared by analysis of variance and independent and paired t-test. Mean scores of Conners rating scales were not different between two groups in any steps of evaluation. Both groups had significantly reduced scores in week 2 of treatment (P = 0.00, with no significant change in subsequent measurements. Rates of improvement, mean increase in weight (P = 0.894, and mean change in fasting blood sugar (P = 0.671 were not significantly different between two groups. Mean serum prolactin showed a significant increase in risperidone group (P = 0.00. Both risperidone and aripiprazole were equally effective in reducing symptoms of ADHD and oppositional defiant disorder, and relatively safe, but high rates of side effects suggest the cautious use of these drugs in children.

Peer Group Socialization of Homophobic Attitudes and Behavior during Adolescence

Science.gov (United States)

Poteat, V. Paul

2007-01-01

A social developmental framework was applied to test for the socialization of homophobic attitudes and behavior within adolescent peer groups (Grades 7-11; aged 12-17 years). Substantial similarity within and differences across groups were documented. Multilevel models identified a group socializing contextual effect, predicting homophobic…

Disruptive behavior disorders in offspring of parents with major depression: associations with parental behavior disorders.

Science.gov (United States)

Hirshfeld-Becker, Dina R; Petty, Carter; Micco, Jamie A; Henin, Aude; Park, Jennifer; Beilin, Ari; Rosenbaum, Jerrold F; Biederman, Joseph

2008-12-01

Although the offspring of parents with major depressive disorder (MDD) are at increased risk to develop disruptive behavior disorders (DBD) in addition to MDD, it remains unclear whether this heightened risk is due to MDD or to comorbid DBD in the parents. In a secondary analysis of longitudinal data from offspring at risk for MDD and panic disorder and comparison children, we stratified 169 children of parents who had been treated for MDD based upon presence (n=50) or absence (n=119) of parental history of DBD (ADHD, oppositional disorder, and conduct disorder) and contrasted them with children of parents with DBD but without MDD (n=19) and children whose parents had neither MDD nor DBD (n=106). The children had been assessed in middle childhood using structured diagnostic interviews. Offspring of parents with MDD + DBD had significantly higher rates of MDD, DBD in general, and ADHD in particular, compared with offspring of parents with MDD alone. Offspring of parents with MDD + DBD also had higher rates of mania than controls. Both parental MDD and DBD conferred independent risk for MDD and DBD in the offspring. However, only parental DBD conferred independent risk for conduct disorder and ADHD and only parental MDD conferred independent risk for oppositional defiant disorder. Elevated rates of DBD in the offspring of parents with MDD appear to be due in part to the presence of DBD in the parents. Further studies of samples not selected on the basis of parental panic disorder are needed to confirm these results.

Consistent Individual Differences Drive Collective Behavior and Group Functioning of Schooling Fish.

Science.gov (United States)

Jolles, Jolle W; Boogert, Neeltje J; Sridhar, Vivek H; Couzin, Iain D; Manica, Andrea

2017-09-25

The ubiquity of consistent inter-individual differences in behavior ("animal personalities") [1, 2] suggests that they might play a fundamental role in driving the movements and functioning of animal groups [3, 4], including their collective decision-making, foraging performance, and predator avoidance. Despite increasing evidence that highlights their importance [5-16], we still lack a unified mechanistic framework to explain and to predict how consistent inter-individual differences may drive collective behavior. Here we investigate how the structure, leadership, movement dynamics, and foraging performance of groups can emerge from inter-individual differences by high-resolution tracking of known behavioral types in free-swimming stickleback (Gasterosteus aculeatus) shoals. We show that individual's propensity to stay near others, measured by a classic "sociability" assay, was negatively linked to swim speed across a range of contexts, and predicted spatial positioning and leadership within groups as well as differences in structure and movement dynamics between groups. In turn, this trait, together with individual's exploratory tendency, measured by a classic "boldness" assay, explained individual and group foraging performance. These effects of consistent individual differences on group-level states emerged naturally from a generic model of self-organizing groups composed of individuals differing in speed and goal-orientedness. Our study provides experimental and theoretical evidence for a simple mechanism to explain the emergence of collective behavior from consistent individual differences, including variation in the structure, leadership, movement dynamics, and functional capabilities of groups, across social and ecological scales. In addition, we demonstrate individual performance is conditional on group composition, indicating how social selection may drive behavioral differentiation between individuals. Copyright © 2017 The Author(s). Published by

Digital Disruption

DEFF Research Database (Denmark)

Rosenstand, Claus Andreas Foss

det digitale domæne ud over det niveau, der kendetegner den nuværende debat, så præsenteres der ny viden om digital disruption. Som noget nyt udlægges Clayton Christens teori om disruptiv innovation med et særligt fokus på små organisationers mulighed for eksponentiel vækst. Specielt udfoldes...... forholdet mellem disruption og den stadig accelererende digitale udvikling i konturerne til ny teoridannelse om digital disruption. Bogens undertitel ”faretruende og fascinerende forandringer” peger på, at der er behov for en nuanceret debat om digital disruption i modsætning til den tone, der er slået an i...... videre kalder et ”disruption-råd”. Faktisk er rådet skrevet ind i 2016 regeringsgrundlaget for VLK-regeringen. Disruption af organisationer er ikke et nyt fænomen; men hastigheden, hvormed det sker, er stadig accelererende. Årsagen er den globale mega-trend: Digitalisering. Og derfor er specielt digital...

Cancrinite-group minerals behavior at non-ambient conditions

Science.gov (United States)

Lotti, Paolo; Gatta, G. Diego; Kahlenberg, Volker; Merlini, Marco; Alvaro, Matteo; Cámara, Fernando

2014-05-01

Cancrinite-group minerals occur in the late stages of alkaline (SiO2)-undersaturated magmatism and in related effusive or contact rocks. So far only few studies have been devoted to the description of the thermo-elastic behavior, phase-stability and P /T -structure evolution (at the atomic scale) of this mineral group. Cancrinite-group minerals have an open-framework structure characterized by the [CAN]-topology. The [CAN]-framework shows large 12-ring channels, parallel to the c crystallographic axis, bound by columns of cages, the so-called can units. While very limited chemical variation is observed in the framework composition (the composition is almost always [Si6Al6O24]) a remarkable chemical variability is reported for the extraframework components in the cancrinite-group minerals. Two subgroups can be identified according to the extraframework content of the can units: the cancrinite- and the davyne-subgroups, showing Na-H2O and Ca-Cl chains, respectively. The channels are stuffed by cations, anions and molecules. We aimed to model the thermo-elastic behavior and the mechanisms of the (P ,T)-induced structure evolution of cancrinite-group minerals, with special interest on the role played by the extraframework population. The study was restricted to the following (CO3)-rich and (SO4)-rich end-members: cancrinite sensu stricto {[(Na,Ca)6(CO3)1.2-1.7][Na2(H2O)2][Al6Si6O24]}, vishnevite {[(Na,Ca,K)6(SO4)][Na2(H2O)2][Al6Si6O24]}, balliranoite {[(Na,Ca)6(CO3)1.2-1.7][Ca2Cl2][Al6Si6O24]} and davyne {[(Na,Ca,K)6((SO4),Cl)][Ca2Cl2][Al6Si6O24]}. Their high-P and low-T (T single-crystal X-ray diffraction, using diamond-anvil cells and (N2)-cryosystems, respectively. The high-T behavior of cancrinite has also been studied by means of in-situ single-crystal X-ray diffraction with a resistive heater. Cancrinite minerals share a similar volume compressibility and thermal expansivity at ambient conditions (cancrinite has KV 0 = 45(2) GPa and αV,293K = 4.88(8)·10-5 K-1

Compare the effectiveness of Dialectical Behavior Therapy and Cognitive Behavioral Group Therapy in Reducing Depression in Mothers of Children with Disabilities

Directory of Open Access Journals (Sweden)

Zamani N

2015-04-01

Full Text Available Abstract Background: Depression is on the top list of mental disorders which account for about 25 percent of patients referred to health centers in your world. So, is presented in different ways to treat it. Therefore, the aim of this study is to compare the effectiveness of Dialectical Behavior Therapy and Cognitive Behavioral Group Therapy in reducing depression in mothers of children with disabilities Materials and Methods: This study is quasi-experimental and consists of experimental and control groups. This study population was mothers referred to mobility, occupational therapy and physiotherapy centers who had depressive symptoms. 8 patients in each group were selected by convenience sampling. The research instrument were the Structured Clinical Interview for DSM-IV Axis I disorders and the revised Beck Depression Inventory form (1996. Dialectical behavior therapy and cognitive behavior therapy groups were instructured for 2 months (8 sessions of 2 to 2.5 hours. But the control group did not receive intervention. Results: The results showed that there were significant differences between the mean depression scores of dialectical behavior therapy and cognitive therapy group with control group (p<0.001. Also, there is a significant difference between the mean depression scores of dialectical behavior therapy with cognitive therapy (p<0.001. Conclusion: In the area of treatment and working with depressed people and those who are in crisis mode, it seems that dialectical behavior therapy and cognitive therapy group in view of its nature is very efficient and promising.

Disruption?

DEFF Research Database (Denmark)

2016-01-01

This is a short video on the theme disruption and entrepreneurship. It takes the form of an interview with John Murray......This is a short video on the theme disruption and entrepreneurship. It takes the form of an interview with John Murray...

Disruption of River Networks in Nature and Models

Science.gov (United States)

Perron, J. T.; Black, B. A.; Stokes, M.; McCoy, S. W.; Goldberg, S. L.

2017-12-01

Many natural systems display especially informative behavior as they respond to perturbations. Landscapes are no exception. For example, longitudinal elevation profiles of rivers responding to changes in uplift rate can reveal differences among erosional mechanisms that are obscured while the profiles are in equilibrium. The responses of erosional river networks to perturbations, including disruption of their network structure by diversion, truncation, resurfacing, or river capture, may be equally revealing. In this presentation, we draw attention to features of disrupted erosional river networks that a general model of landscape evolution should be able to reproduce, including the consequences of different styles of planetary tectonics and the response to heterogeneous bedrock structure and deformation. A comparison of global drainage directions with long-wavelength topography on Earth, Mars, and Saturn's moon Titan reveals the extent to which persistent and relatively rapid crustal deformation has disrupted river networks on Earth. Motivated by this example and others, we ask whether current models of river network evolution adequately capture the disruption of river networks by tectonic, lithologic, or climatic perturbations. In some cases the answer appears to be no, and we suggest some processes that models may be missing.

Disruption of Memory Reconsolidation Erases a Fear Memory Trace in the Human Amygdala: An 18-Month Follow-Up.

Directory of Open Access Journals (Sweden)

Johannes Björkstrand

Full Text Available Fear memories can be attenuated by reactivation followed by disrupted reconsolidation. Using functional magnetic resonance imaging we recently showed that reactivation and reconsolidation of a conditioned fear memory trace in the basolateral amygdala predicts subsequent fear expression over two days, while reactivation followed by disrupted reconsolidation abolishes the memory trace and suppresses fear. In this follow-up study we demonstrate that the behavioral effect persists over 18 months reflected in superior reacquisition after undisrupted, as compared to disrupted reconsolidation, and that neural activity in the basolateral amygdala representing the initial fear memory predicts return of fear. We conclude that disrupting reconsolidation have long lasting behavioral effects and may permanently erase the fear component of an amygdala-dependent memory.

Summary report for ITER Task - T226B: Evaluation of ITER disruption erosion

International Nuclear Information System (INIS)

Hassanein, A.

1995-02-01

The behavior of divertor materials during a major disruption in a tokamak reactor is very important to successful and reliable operation of the device. Erosion of material surfaces due to a thermal energy dump can severely limit the lifetimes of plasma-facing components and thus diminish the reactor's economic feasibility. A comprehensive numerical model has been developed and used in this analysis, which includes all major physical processes taking place during plasma/material interactions. Models to account for material thermal evolution, plasma/vapor interaction physics, and models for hydrodynamic radiation transport in the developed vapor cloud above the exposed surface are implemented in a self-consistent manner to realistically assess disruption damage. The extent of self-protection from the developed vapor cloud in front of the incoming plasma particles is critically important in determining the overall disruption lifetime. Models to study detailed effects of the strong magnetic field on the behavior of the vapor cloud and on the net erosion rate have also been developed and analyzed. Candidate materials such as beryllium and carbon are considered in this analysis. The dependence of divertor disruption lifetime on disruption physics and reactor conditions is analyzed and discussed. In addition, material erosion from melting of plasma-facing components during a tokamak disruption is also a serious problem that limits reactor operation and economical reactor lifetime. In particular, metallic low-Z components such as Be will be subjected to severe melting during disruptions and edge localized modes (ELMs). Loss of the developed melt layer will critically shorten the lifetime of these components, severely contaminate the plasma, and seriously inhibit successful and reliable operation of the reactor. In this study mechanisms responsible for melt-layer loss during a disruption are also modeled and evaluated

Effects of Group Counseling Transmitted Through Videoconferencing on Changes in Eating Behaviors.

Science.gov (United States)

Nevanperä, Nina; Keränen, Anna-Maria; Ukkola, Olavi; Laitinen, Jaana

2015-01-01

To compare the effects of constructivism-based dietary group counseling transmitted through videoconferencing (VC) and face-to-face (FF) counseling on changes in eating behaviors. Altogether, 74 participants with high risk of type 2 diabetes were divided into FF and VC groups based on their place of residence in northern Finland. Constructivism-based dietary group counseling, a nonrandomized intervention, was performed (evaluations at 0, 6, and 21 months). The Three-Factor Eating Questionnaire-18 was used to evaluate cognitive restraint eating (CR), emotional eating (EE), and uncontrolled eating (UE). Data were analyzed using ANOVA and ANCOVA (significance level of 0.05). Cognitive restraint eating increased and UE decreased between baseline and 6 months in both groups, but between baseline and 21 months only in the FF group (P = .005 and P = .021, respectively). Emotional eating decreased only in the VC group (P = .016). There were no differences between groups at 6 or 21 months. Constructivism-based counseling delivered through videoconferencing was effective at improving eating behaviors. Copyright © 2015 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

Disruptive Innovation Can Prevent the Next Pandemic.

Science.gov (United States)

Shaikh, Affan T; Ferland, Lisa; Hood-Cree, Robert; Shaffer, Loren; McNabb, Scott J N

2015-01-01

Public health surveillance (PHS) is at a tipping point, where the application of novel processes, technologies, and tools promise to vastly improve efficiency and effectiveness. Yet twentieth century, entrenched ideology and lack of training results in slow uptake and resistance to change. The term disruptive innovation - used to describe advances in technology and processes that change existing markets - is useful to describe the transformation of PHS. Past disruptive innovations used in PHS, such as distance learning, the smart phone, and field-based laboratory testing have outpaced older services, practices, and technologies used in the traditional classroom, governmental offices, and personal communication, respectively. Arguably, the greatest of these is the Internet - an infrastructural innovation that continues to enable exponential benefits in seemingly limitless ways. Considering the Global Health Security Agenda and facing emerging and reemerging infectious disease threats, evolving environmental and behavioral risks, and ever changing epidemiologic trends, PHS must transform. Embracing disruptive innovation in the structures and processes of PHS can be unpredictable. However, it is necessary to strengthen and unlock the potential to prevent, detect, and respond.

Stability and erosion of melt layers formed during plasma disruptions

International Nuclear Information System (INIS)

Hassanein, A.M.

1989-01-01

Melting and vaporization of metallic reactor components such as the first wall and the limiter/divertor may be expected in fusion reactors due to the high energy deposition resulting from plasma instabilities occuring during both normal and off-normal operating conditions. Off-normal operating conditions result from plasma disruptions where the plasma losses confinement and dumps its energy on parts of reactor components. High heat flux may also result during normal operating conditions due to fluctuations in plasma edge conditions. Of particular significance is the stability and erosion of the resulting melt layer which directly impacts the total expected lifetime of the reactor. The loss of the melt layer during the disruption could have a serious impact on the required safe and economic operation of the reactor. A model is developed to describe the behavior of the melt layer during the time evolution of the disruption. The analysis is done parametrically for a range of disruption times, energy densities and various acting forces

Increased Reliance on Value-based Decision Processes Following Motor Cortex Disruption.

Science.gov (United States)

Zénon, Alexandre; Klein, Pierre-Alexandre; Alamia, Andrea; Boursoit, François; Wilhelm, Emmanuelle; Duque, Julie

2015-01-01

During motor decision making, the neural activity in primary motor cortex (M1) encodes dynamically the competition occurring between potential action plans. A common view is that M1 represents the unfolding of the outcome of a decision process taking place upstream. Yet, M1 could also be directly involved in the decision process. Here we tested this hypothesis by assessing the effect of M1 disruption on a motor decision-making task. We applied continuous theta burst stimulation (cTBS) to inhibit either left or right M1 in different groups of subjects and included a third control group with no stimulation. Following cTBS, participants performed a task that required them to choose between two finger key-presses with the right hand according to both perceptual and value-based information. Effects were assessed by means of generalized linear mixed models and computational simulations. In all three groups, subjects relied both on perceptual (P < 0.0001) and value-based information (P = 0.003) to reach a decision. Yet, left M1 disruption led to an increased reliance on value-based information (P = 0.03). This result was confirmed by a computational model showing an increased weight of the valued-based process on the right hand finger choices following left M1 cTBS (P < 0.01). These results indicate that M1 is involved in motor decision making, possibly by weighting the final integration of multiple sources of evidence driving motor behaviors. Copyright © 2015 Elsevier Inc. All rights reserved.

Fluoxetine normalizes disrupted light-induced entrainment, fragmented ultradian rhythms and altered hippocampal clock gene expression in an animal model of high trait anxiety- and depression-related behavior.

Science.gov (United States)

Schaufler, Jörg; Ronovsky, Marianne; Savalli, Giorgia; Cabatic, Maureen; Sartori, Simone B; Singewald, Nicolas; Pollak, Daniela D

2016-01-01

Disturbances of circadian rhythms are a key symptom of mood and anxiety disorders. Selective serotonin reuptake inhibitors (SSRIs) - commonly used antidepressant drugs - also modulate aspects of circadian rhythmicity. However, their potential to restore circadian disturbances in depression remains to be investigated. The effects of the SSRI fluoxetine on genetically based, depression-related circadian disruptions at the behavioral and molecular level were examined using mice selectively bred for high anxiety-related and co-segregating depression-like behavior (HAB) and normal anxiety/depression behavior mice (NAB). The length of the circadian period was increased in fluoxetine-treated HAB as compared to NAB mice while the number of activity bouts and light-induced entrainment were comparable. No difference in hippocampal Cry2 expression, previously reported to be dysbalanced in untreated HAB mice, was observed, while Per2 and Per3 mRNA levels were higher in HAB mice under fluoxetine treatment. The present findings provide evidence that fluoxetine treatment normalizes disrupted circadian locomotor activity and clock gene expression in a genetic mouse model of high trait anxiety and depression. An interaction between the molecular mechanisms mediating the antidepressant response to fluoxetine and the endogenous regulation of circadian rhythms in genetically based mood and anxiety disorders is proposed.

Disruptive Behaviour Disorder (DBD) Rating Scale for Attention ...

African Journals Online (AJOL)

This is the first normative values and charts for the screening of ADHD based on the disruptive behavior disorder screening questionnaire for children in Nigeria. The use of these charts and norms will no doubt make the identification of these children easier especially at the community level and strengthen the School health ...

Exploration of Support Behavior in Counseling Groups with Counseling Trainees

Science.gov (United States)

Harel, Yoni; Shechtman, Zipora; Cutrona, Carolyn

2012-01-01

The study explores the types of support expressed in counseling groups attended by trainee counselors. Support is a crucial factor in human life in general, and in groups in particular, yet little is known about the type of support presented in counseling groups. Type of support was categorized by means of the Social Support Behavior Code (SSBC;…

Adoptive parent hostility and children's peer behavior problems: examining the role of genetically informed child attributes on adoptive parent behavior.

Science.gov (United States)

Elam, Kit K; Harold, Gordon T; Neiderhiser, Jenae M; Reiss, David; Shaw, Daniel S; Natsuaki, Misaki N; Gaysina, Darya; Barrett, Doug; Leve, Leslie D

2014-05-01

Socially disruptive behavior during peer interactions in early childhood is detrimental to children's social, emotional, and academic development. Few studies have investigated the developmental underpinnings of children's socially disruptive behavior using genetically sensitive research designs that allow examination of parent-on-child and child-on-parent (evocative genotype-environment correlation [rGE]) effects when examining family process and child outcome associations. Using an adoption-at-birth design, the present study controlled for passive genotype-environment correlation and directly examined evocative rGE while examining the associations between family processes and children's peer behavior. Specifically, the present study examined the evocative effect of genetic influences underlying toddler low social motivation on mother-child and father-child hostility and the subsequent influence of parent hostility on disruptive peer behavior during the preschool period. Participants were 316 linked triads of birth mothers, adoptive parents, and adopted children. Path analysis showed that birth mother low behavioral motivation predicted toddler low social motivation, which predicted both adoptive mother-child and father-child hostility, suggesting the presence of an evocative genotype-environment association. In addition, both mother-child and father-child hostility predicted children's later disruptive peer behavior. Results highlight the importance of considering genetically influenced child attributes on parental hostility that in turn links to later child social behavior. Implications for intervention programs focusing on early family processes and the precursors of disrupted child social development are discussed. (PsycINFO Database Record (c) 2014 APA, all rights reserved).

A Behavioral Framework for Managing Massive Airline Flight Disruptions through Crisis Management, Organization Development, and Organization Learning

Science.gov (United States)

Larsen, Tulinda Deegan

In this study the researcher provides a behavioral framework for managing massive airline flight disruptions (MAFD) in the United States. Under conditions of MAFD, multiple flights are disrupted throughout the airline's route network, customer service is negatively affected, additional costs are created for airlines, and governments intervene. This study is different from other studies relating to MAFD that have focused on the operational, technical, economic, financial, and customer service impacts. The researcher argues that airlines could improve the management of events that led to MAFD by applying the principles of crisis management where the entire organization is mobilized, rather than one department, adapting organization development (OD) interventions to implement change and organization learning (OL) processes to create culture of innovation, resulting in sustainable improvement in customer service, cost reductions, and mitigation of government intervention. At the intersection of crisis management, OD, and OL, the researcher has developed a new conceptual framework that enhances the resiliency of individuals and organizations in responding to unexpected-yet-recurring crises (e.g., MAFD) that impact operations. The researcher has adapted and augmented Lalonde's framework for managing crises through OD interventions by including OL processes. The OD interventions, coupled with OL, provide a framework for airline leaders to manage more effectively events that result in MAFD with the goal of improving passenger satisfaction, reducing costs, and preventing further government intervention. Further research is warranted to apply this conceptual framework to unexpected-yet-recurring crises that affect operations in other industries.

Cognitive-behavioral group therapy in obsessive-compulsive disorder: a clinical trial

Directory of Open Access Journals (Sweden)

Cordioli Aristides V

2002-01-01

Full Text Available Objective: To develop a cognitive-behavioral group therapy protocol and to verify its efficacy to reduce obsessive-compulsive symptoms. Methods: An open clinical trial with 32 obsessive-compulsive patients was performed, in which a cognitive-behavioral group therapy protocol of 12 weekly sessions of two hours, in 5 consecutive groups, was applied. The severity of symptoms was rated with the Yale-Brown Obsessive-Compulsive (Y-BOCS, Hamilton Anxiety (HAM A and Hamilton Depression (HAM D scales. The patients were followed up for 3 months after the end of the treatment. Results: There was a significant reduction in the scores of Y-BOCS, HAM A and HAM D scales with the treatment regardless the use of anti-obsessive medications. The rate of improved patients (decrease of > or = 35% in Y-BOCS was 78.1%. Two patients (6.25% dropped out from the study. The effect size calculated for the Y-BOCS scale was 1.75. Conclusions: This study suggests that cognitive-behavioral group therapy reduces obsessive-compulsive symptoms. In addition, patients presented good compliance.

Using Leadered Groups in Organizational Behavior and Management Survey Courses

Science.gov (United States)

Andre, Rae

2011-01-01

In organizational behavior and management survey courses, students are likely to maximize certain career-appropriate knowledge when their classroom groups are leadered rather than leaderless. Using leadered groups facilitates the learning of the professional and managerial skills associated with formal leadership while reducing some problematic…

Effectiveness of Group Cognitive-Behavioral Therapy on Symptoms of Premenstrual Syndrome (PMS) ‎.

Science.gov (United States)

Maddineshat, Maryam; Keyvanloo, Sodabe; Lashkardoost, Hossein; Arki, Mina; Tabatabaeichehr, Mahbubeh

2016-01-01

Standards of care and treatment of premenstrual syndrome (PMS) vary. Non-drug ‎psychosocial intervention therapy is recommended for women with any kind of ‎discomfort or distress caused by PMS. The current study examined the effectiveness of ‎group cognitive-behavioral therapy on the symptoms of PMS at a girls' dormitory of ‎North Khorasan University of Medical Sciences. In this quasi-experimental study, 32 female students with PMS who were majoring in ‎nursing and midwifery and residing in the dormitory were selected using the ‎convenience sampling method and were assigned to experimental and control groups. ‎The Standardized Premenstrual Symptoms Screening Tool was used as the research ‎tool. Eight sessions of cognitive-behavioral group therapy were held for the students Results: There was a significant difference in psychological symptoms before and after ‎cognitive-behavioral therapy (p=0.012). Furthermore, cognitive-behavioral therapy was ‎effective on social interferences caused by PMS symptoms (p=0.012).‎ Group cognitive-behavioral therapy effectively alleviates PMS symptoms in female ‎college students.‎.

Vaporization studies of plasma interactive materials in simulated plasma disruption events

International Nuclear Information System (INIS)

Stone, C.A. IV; Croessmann, C.D.; Whitley, J.B.

1988-03-01

The melting and vaporization that occur when plasma facing materials are subjected to a plasma disruption will severely limit component lifetime and plasma performance. A series of high heat flux experiments was performed on a group of fusion reactor candidate materials to model material erosion which occurs during plasma disruption events. The Electron Beam Test System was used to simulate single disruption and multiple disruption phenomena. Samples of aluminum, nickel, copper, molybdenum, and 304 stainless steel were subjected to a variety of heat loads, ranging from 100 to 400 msec pulses of 8 to 18 kWcm 2 . It was found that the initial surface temperature of a material strongly influences the vaporization process and that multiple disruptions do not scale linearly with respect to single disruption events. 2 refs., 9 figs., 5 tabs

Adoptive Parent Hostility and Children’s Peer Behavior Problems: Examining the Role of Genetically-Informed Child Attributes on Adoptive Parent Behavior

Science.gov (United States)

Elam, Kit K.; Harold, Gordon T.; Neiderhiser, Jenae M.; Reiss, David; Shaw, Daniel S.; Natsuaki, Misaki N.; Gaysina, Darya; Barrett, Doug; Leve, Leslie D.

2014-01-01

Socially disruptive behavior during peer interactions in early childhood is detrimental to children’s social, emotional, and academic development. Few studies have investigated the developmental underpinnings of children’s socially disruptive behavior using genetically-sensitive research designs that allow examination of parent-on-child and child-on-parent (evocative genotype-environment correlation) effects when examining family process and child outcome associations. Using an adoption-at-birth design, the present study controlled for passive genotype-environment correlation and directly examined evocative genotype-environment correlation (rGE) while examining the associations between family processes and children’s peer behavior. Specifically, the present study examined the evocative effect of genetic influences underlying toddler low social motivation on mother-child and father-child hostility, and the subsequent influence of parent hostility on disruptive peer behavior during the preschool period. Participants were 316 linked triads of birth mothers, adoptive parents, and adopted children. Path analysis showed that birth mother low behavioral motivation predicted toddler low social motivation, which predicted both adoptive mother-child and father-child hostility, suggesting the presence of an evocative genotype-environment association. In addition, both mother-child and father-child hostility predicted children’s later disruptive peer behavior. Results highlight the importance of considering genetically-influenced child attributes on parental hostility that in turn link to later child social behavior. Implications for intervention programs focusing on early family processes and the precursors of disrupted child social development are discussed. PMID:24364829

Incentive Processing in Persistent Disruptive Behavior and Psychopathic Traits: A Functional Magnetic Resonance Imaging Study in Adolescents.

Science.gov (United States)

Cohn, Moran D; Veltman, Dick J; Pape, Louise E; van Lith, Koen; Vermeiren, Robert R J M; van den Brink, Wim; Doreleijers, Theo A H; Popma, Arne

2015-11-01

Children with early-onset disruptive behavior disorder (DBD), especially those with callous-unemotional traits, are at risk of developing persistent and severe adult antisocial behavior. One possible underlying mechanism for persistence is deficient reward and loss sensitivity, i.e., deficient incentive processing. However, little is known about the relation between deficient incentive processing and persistence of antisocial behavior into adulthood or its relation with callous-unemotional and other psychopathic traits. In this study, we investigate the relationship between the neural correlates of incentive processing and both DBD persistence and psychopathic traits. In a sample of 128 adolescents (mean age 17.7) with a history of criminal offending before age 12, functional magnetic resonance imaging was performed during a monetary incentive delay task designed to assess neural responses during incentive processing. Neural activation during incentive processing was then associated with DBD persistence and psychopathic traits, measured with the Youth Psychopathic Traits Inventory. Compared with both healthy control subjects and youths who had desisted from DBD, persistent DBD subjects showed lower neural responses in the ventral striatum during reward outcomes and higher neural responses in the amygdala during loss outcomes. Callous-unemotional traits were related to lower neural responses in the amygdala during reward outcomes, while other psychopathic traits were not related to incentive processing. In the current study, aberrant incentive processing is related to persistence of childhood antisocial behavior into late adolescence and to callous-unemotional traits. This mechanism may underlie treatment resistance in a subgroup of antisocial youth and provide a target for intervention. Copyright © 2015 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.

Disruption simulation experiment using high-frequency rastering electron beam as the heat source

International Nuclear Information System (INIS)

Yamazaki, S.; Seki, M.

1987-01-01

The disruption is a serious event which possibly reduces the lifetime of plasm interactive components, so the effects of the resulting high heat flux on the wall materials must be clearly identified. The authors performed disruption simulation experiments to investigate melting, evaporation, and crack initiation behaviors using an electron beam facility as the heat source. The facility was improved with a high-frequency beam rastering system which provided spatially and temporally uniform heat flux on wider test surfaces. Along with the experiments, thermal and mechanical analyses were also performed. A two-dimensional disruption thermal analysis code (DREAM) was developed for the analyses

Reversed Procrastination by Focal Disruption of Medial Frontal Cortex.

Science.gov (United States)

Jha, Ashwani; Diehl, Beate; Scott, Catherine; McEvoy, Andrew W; Nachev, Parashkev

2016-11-07

An enduring puzzle in the neuroscience of voluntary action is the origin of the remarkably wide dispersion of the reaction time distribution, an interval far greater than is explained by synaptic or signal transductive noise [1, 2]. That we are able to change our planned actions-a key criterion of volition [3]-so close to the time of their onset implies decision-making must reach deep into the execution of action itself [4-6]. It has been influentially suggested the reaction time distribution therefore reflects deliberate neural procrastination [7], giving alternative response tendencies sufficient time for fair competition in pursuing a decision threshold that determines which one is behaviorally manifest: a race model, where action selection and execution are closely interrelated [8-11]. Although the medial frontal cortex exhibits a sensitivity to reaction time on functional imaging that is consistent with such a mechanism [12-14], direct evidence from disruptive studies has hitherto been lacking. If movement-generating and movement-delaying neural substrates are closely co-localized here, a large-scale lesion will inevitably mask any acceleration, for the movement itself could be disrupted. Circumventing this problem, here we observed focal intracranial electrical disruption of the medial frontal wall in the context of the pre-surgical evaluation of two patients with epilepsy temporarily reversing such hypothesized procrastination. Effector-specific behavioral acceleration, time-locked to the period of electrical disruption, occurred exclusively at a specific locus at the ventral border of the pre-supplementary motor area. A cardinal prediction of race models of voluntary action is thereby substantiated in the human brain. Copyright © 2016 The Authors. Published by Elsevier Ltd.. All rights reserved.

Effectiveness of Cognitive Behavioral Group Therapy for Treatment of Panic Disorder: A Systematic Review

Directory of Open Access Journals (Sweden)

Servet Kacar Basaran

2016-03-01

Full Text Available This study aims to review empirical studies that evaluate effectiveness of cognitive-behavioral group therapy programs for treatment for panic disorder. Articles in English and Turkish that were published between the years of 2000 and 2015 (February have been searched in the national and international databases. The articles that were not therapy effectiveness studies, and group therapies that not based on cognitive behavioral approach were eliminated. The remaining 19 studies that were met the criteria were introduced in terms of method, therapy characteristics and results. The results of the studies showed that cognitive behavioral group therapies have similar efficacy with individual cognitive behavioral therapy on panic disorder symptoms (panic attacks frequency, the level of agoraphobia etc. and comorbid disorders (depression, anxiety sensitivity. However, cognitive behavioral group therapy is more cost-effective. [Psikiyatride Guncel Yaklasimlar - Current Approaches in Psychiatry 2016; 8(Supplement 1: 79-94

Disruptions in JET

International Nuclear Information System (INIS)

Wesson, J.A.; Gill, R.D.; Hugon, M.

1989-01-01

In JET, both high density and low-q operation are limited by disruptions. The density limit disruptions are caused initially by impurity radiation. This causes a contraction of the plasma temperature profile and leads to an MHD unstable configuration. There is evidence of magnetic island formation resulting in minor disruptions. After several minor disruptions, a major disruption with a rapid energy quench occurs. This event takes place in two stages. In the first stage there is a loss of energy from the central region. In the second stage there is a more rapid drop to a very low temperature, apparently due to a dramatic increase in impurity radiation. The final current decay takes place in the resulting cold plasma. During the growth of the MHD instability the initially rotating mode is brought to rest. This mode locking is believed to be due to an electromagnetic interaction with the vacuum vessel and external magnetic field asymmetries. The low-q disruptions are remarkable for the precision with which they occur at q ψ = 2. These disruptions do not have extended precursors or minor disruptions. The instability grows and locks rapidly. The energy quench and current decay are generally similar to those of the density limit. (author). 43 refs, 35 figs, 3 tabs

Pharmacological treatment of disruptive behavior in Smith-Magenis syndrome.

Science.gov (United States)

Laje, Gonzalo; Bernert, Rebecca; Morse, Rebecca; Pao, Maryland; Smith, Ann C M

2010-11-15

Smith-Magenis syndrome (SMS) is a complex genetic syndrome caused by an interstitial deletion of chromosome 17p11.2. Children and adults with SMS appear to have unique neurobehavioral problems that include: sleep disturbance, self-injurious and maladaptive behaviors, stereotypies, and sensory integration disorders. We gathered retrospective psychotropic use information from parents or other caregivers of 62 individuals with SMS who were asked about use of psychotropic medication from a list of commonly used psychiatric medications. For those drugs identified, respondents were asked to rate the experience with the particular medication using a likert-type scale. Drugs were grouped into seven main categories: (1) stimulants; (2) antidepressants; (3) antipsychotics; (4) sleep aides; (5) mood stabilizers; (6) alpha 2 agonists; and (7) benzodiazepines. Relative frequencies, means and standard deviations pertaining to age and medication effect were derived for each medication category. Six of the seven medication categories examined showed no meaningful deviations from the "no change" score. The benzodiazepine group showed a mild detrimental effect. There were no gender differences in efficacy. Use of psychotropic medication started early in life (mean age 5 years), particularly with sleep aides. Although no medication category was identified as efficacious in SMS, all the categories reported herein may be considered as an option for brief symptomatic relief.

UNDERSTANDING THE ROLE OF BEHAVIOR AND COGNITIONS IN A GROUP EXERCISE SETTING

Directory of Open Access Journals (Sweden)

Kimberley A. Dawson

2004-11-01

Full Text Available The first purpose of the present study examined whether individuals with different exercise behaviors (classified by attendance experienced different or similar cognitive patterns. It was hypothesized that different behavior would lead to different cognitive appraisals. It was predicted that there would be a difference between the three behavioral frequency groups with regard to self-efficacy measures and goal measures. The second purpose of the study was to describe, evaluate and observe whether social factors were associated with participating in exercise in groups. It was hypothesized that those who engage in exercise classes would elicit a social focus. Participants for the study included 39 females who registered in-group fitness classes at a mid-sized university. Attendance over the 10-week course was assessed and participants completed a self-report questionnaire during week seven. The attendance data were used to create 3 exercise frequency groups (regular attenders, sporadic attenders, and dropouts based on ACSM's exercise guidelines. Analysis of Variance (ANOVA, means and frequencies were used to describe the data. There were no significant differences on measures of self-efficacy, goal measures, enjoyment, and external motivation among the three groups (all p's > 0.05. An analysis of the whole group (N=39 discovered a low social focus and high ratings of self-efficacy. Continued research is necessary to investigate the benefit of social support in a group exercise setting, as well as to better understand how self-regulation through self-efficacy and goal factors influences and is influenced by actual behavior.

Deletion of Melanin Concentrating Hormone Receptor-1 disrupts overeating in the presence of food cues.

Science.gov (United States)

Sherwood, Andrew; Holland, Peter C; Adamantidis, Antoine; Johnson, Alexander W

2015-12-01

Exposure to environmental cues associated with food can evoke eating behavior in the absence of hunger. This capacity for reward cues to promote feeding behaviors under sated conditions can be examined in the laboratory using cue-potentiated feeding (CPF). The orexigenic neuropeptide Melanin Concentrating Hormone (MCH) is expressed throughout brain circuitry critical for CPF. We examined whether deletion of the MCH receptor, MCH-1R, would in KO mice disrupt overeating in the presence of a Pavlovian CS+ associated with sucrose delivery. While both wild-type controls and KO mice showed comparable food magazine approach responses during the CPF test, MCH-1R deletion significantly impaired the ability of the CS+ to evoke overeating of sucrose under satiety. Through the use of a refined analysis of meal intake, it was revealed that this disruption to overeating behavior in KO mice reflected a reduction in the capacity for the CS+ to initiate and maintain bursts of licking behavior. These findings suggest that overeating during CPF requires intact MCH-1R signaling and may be due to an influence of the CS+ on the palatability of food and on regulatory mechanisms of peripheral control. Thus, disruptions to MCH-1R signaling may be a useful pharmacological tool to inhibit this form of overeating behavior. Copyright © 2015 Elsevier Inc. All rights reserved.

Digital disruption ?syndromes.

Science.gov (United States)

Sullivan, Clair; Staib, Andrew

2017-05-18

The digital transformation of hospitals in Australia is occurring rapidly in order to facilitate innovation and improve efficiency. Rapid transformation can cause temporary disruption of hospital workflows and staff as processes are adapted to the new digital workflows. The aim of this paper is to outline various types of digital disruption and some strategies for effective management. A large tertiary university hospital recently underwent a rapid, successful roll-out of an integrated electronic medical record (EMR). We observed this transformation and propose several digital disruption "syndromes" to assist with understanding and management during digital transformation: digital deceleration, digital transparency, digital hypervigilance, data discordance, digital churn and post-digital 'depression'. These 'syndromes' are defined and discussed in detail. Successful management of this temporary digital disruption is important to ensure a successful transition to a digital platform. What is known about this topic? Digital disruption is defined as the changes facilitated by digital technologies that occur at a pace and magnitude that disrupt established ways of value creation, social interactions, doing business and more generally our thinking. Increasing numbers of Australian hospitals are implementing digital solutions to replace traditional paper-based systems for patient care in order to create opportunities for improved care and efficiencies. Such large scale change has the potential to create transient disruption to workflows and staff. Managing this temporary disruption effectively is an important factor in the successful implementation of an EMR. What does this paper add? A large tertiary university hospital recently underwent a successful rapid roll-out of an integrated electronic medical record (EMR) to become Australia's largest digital hospital over a 3-week period. We observed and assisted with the management of several cultural, behavioural and

Feasibility of and Teacher Preference for Student-Led Implementation of the Good Behavior Game in Early Elementary Classrooms

Science.gov (United States)

Donaldson, Jeanne M.; Matter, Ashley L.; Wiskow, Katie M.

2018-01-01

The Good Behavior Game (GBG) is a classwide group contingency shown to reduce disruptive student behavior. We examined the feasibility of training young students to lead the GBG in one first-grade and three kindergarten classes. We also examined teacher preference for teacher-led GBG, student-led GBG, or no GBG using a concurrent chains procedure.…

The role of polyhalogenated aromatic hydrocarbons on thyroid hormone disruption and cognitive function: a review.

Science.gov (United States)

Builee, T L; Hatherill, J R

2004-11-01

Thyroid hormones (TH) are essential to normal brain development, influencing behavior and cognitive function in both adult and children. It is suggested that conditions found in TH abnormalities such as hypothyroidism, hyperthyroidism and generalized resistance to thyroid hormone (GRTH) share symptomatic behavioral impulses found in cases of attention deficit hyperactivity disorder (ADHD) and other cognitive disorders. Disrupters of TH are various and prevalent in the environment. This paper reviews the mechanisms of TH disruption caused by the general class of polyhalogenated aromatic hydrocarbons (PHAH)'s acting as thyroid disrupters (TD). PHAHs influence the hypothalamus-pituitary-thyroid (HPT) axis, as mimicry agents affecting synthesis and secretion of TH. Exposure to PHAH induces liver microsomal enzymes UDP-glucuronosyltransferase (UGT) resulting in accelerated clearance of TH. PHAHs can compromise function of transport and receptor binding proteins such as transthyretin and aryl hydrocarbon receptors (Ahr). Glucose metabolism and catecholamine synthesis are disrupted in the brain by the presence of PHAH. Further, PHAH can alter brain growth and development by perturbing cytoskeletal formation, thereby affecting neuronal migration, elongation and branching. The complex relationships between PHAH and cognitive function are examined in regard to the disruption of T4 regulation in the hypothalamus-pituitary-thyroid axis, blood, brain, neurons, liver and pre and postnatal development.

Disruptive Innovation Can Prevent the Next Pandemic

Directory of Open Access Journals (Sweden)

Affan eShaikh

2015-09-01

Full Text Available Public health surveillance (PHS is at a tipping point, where the application of novel processes, technologies, and tools promise to vastly improve efficiency and effectiveness. Yet 20th-century, entrenched ideology and lack of training results in slow uptake and resistance to change. The term disruptive innovation – used to describe advances in technology and processes that change existing markets, is useful to describe the transformation of PHS. Past disruptive innovations used in PHS, such as distance learning, the smart phone, and field-based laboratory testing have outpaced older services, practices, and technologies used in the traditional classroom, governmental offices, and personal communication, respectively. Arguably, the greatest of these is the Internet – an infrastructural innovation that continues to enable exponential benefits in seemingly limitless ways. Considering the Global Health Security Agenda and facing emerging and reemerging infectious disease threats, evolving environmental and behavioral risks, and ever changing epidemiologic trends, PHS must transform. Embracing disruptive innovation in the structures and processes of PHS can be unpredictable. However it is necessary to strengthen and unlock the potential to prevent, detect, and respond.

A Preliminary Report of Short-Term Cognitive-Behavioral Group Therapy for Inpatients With Personality Disorders

Science.gov (United States)

SPRINGER, TAMAR; LOHR, NAOMI E.; BUCHTEL, HENRY A.; SILK, KENNETH R.

1996-01-01

A randomized, controlled study evaluated the effectiveness of a cognitive-behavioral therapy group, based on Linehan’s dialectical behavior therapy, for inpatients with personality disorders. The treatment, a problem-solving skills group focused on parasuicidality, was compared with a discussion control group. Change was assessed by self-report measures and behavioral observations on the unit. Subjects in both groups improved significantly on most change measures, although no significant between-group differences were found. However, the treatment group patients viewed the intervention as more beneficial to them in their lives outside the hospital. The usefulness of this type of group on a short-term unit is discussed. PMID:22700265

The Difficulty of Maintaining Positive Intervention Effects: A Look at Disruptive Behavior, Deviant Peer Relations, and Social Skills During the Middle School Years

Science.gov (United States)

2013-01-01

This paper examines the effects of the Fast Track preventive intervention on youths’ functioning in three domains: disruptive behavior problems, involvement with deviant peers, and social skills during the middle school years. Eight hundred ninety-one children had been randomly assigned by sets of schools within four sites to intervention (n = 445) or to control (n = 446) conditions. In contrast to prior findings of the effectiveness of the Fast Track intervention during the elementary school years, the current findings indicate that Fast Track had little overall impact on children’s functioning in these domains during this age period. There were positive intervention effects on only 2 of 17 outcomes examined. Although the intervention had positive impact on children’s hyperactive and self-reported delinquent behaviors in seventh grade, there were no intervention effects on other externalizing behavior problems or on social skills, and there was a negative intervention effect on children’s involvement with deviant peers during this age period. PMID:24319308

Assessment of accident energetics in LMFBR core-disruptive accidents

International Nuclear Information System (INIS)

Fauske, H.K.

1977-01-01

An assessment of accident energetics in LMFBR core-disruptive accidents is given with emphasis on the generic issues of energetic recriticality and energetic fuel-coolant interaction events. Application of a few general behavior principles to the oxide-fueled system suggests that such events are highly unlikely following a postulated core meltdown event

Verbal and nonverbal behavior of ability-grouped dyads

Science.gov (United States)

Jones, M. Gail; Carter, Glenda

In this study we describe the social interactions of ability-grouped dyads as they constructed knowledge of balance concepts to elucidate the relationship between interactions and conceptual growth. The verbal and nonverbal behaviors of 30 fifth-grade students were recorded as they completed three activities related to balance. These student interactions were examined within a framework of social cognition. For each dyad, characteristics of ability-grouped dyads were identified. Results revealed that high-achieving students effectively used prior experiences, maintained focus on the learning task, and were able to manipulate the equipment effectively to construct knowledge. Low-achieving students exhibited off-task behavior, lacked a metacognitive framework for organizing the learning tasks, centered on irrelevant features of the equipment, and were unable to use language effectively to mediate learning. Within low-high student dyads, high-achieving students typically modeled thinking processes and strategies for manipulating equipment. In addition, they focused the low-achieving students on the components of the tasks while verbally monitoring their progress, thus enabling low students to identify the critical features necessary for concept construction. These results highlighted the differences that students have in the use of language and tools. Low students' inefficient use of tools has implications for the ways science teachers structure lessons and group students for laboratory work.Received: 8 March 1993; Revised: 6 January 1994;

Characterizing social behavior, activity, and associations between cognition and behavior upon social grouping of weaned dairy calves.

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Horvath, K C; Miller-Cushon, E K

2018-05-09

Weaned dairy calves are commonly exposed to changing physical and social environments, and ability to adapt to novel management is likely to have performance and welfare implications. We characterized how behavioral responses of weaned heifer calves develop over time after introduction to a social group. Previously individually reared Holstein heifer calves (n = 15; 60 ± 5 d of age; mean ± standard deviation) were introduced in weekly cohorts (5 ± 3 new calves/wk) to an existing group on pasture (8 ± 2 calves/group). We measured activity and behavior on the day of initial introduction and after 1 wk, when calves were exposed to regrouping (addition of younger calves and removal of older calves from the pen). Upon introduction, calves had 2 to 3 times more visits to each region of the pasture; they also spent more time at the back of the pasture, closest to where they were introduced and furthest from the feeding area (25.13 vs. 9.63% of observation period, standard error = 5.04), compared with behavior after 1 wk. Calves also spent less time feeding (5.0 vs. 9.6% of observation period, standard error = 0.82) and self-grooming (0.52 vs. 1.31% of observation period; standard error = 0.20) and more time within 1 to 3 body lengths of another calf (16.3 vs. 11.9% of observation period, standard error = 2.3) when initially grouped. We also explored whether behavioral responses to initial postweaning grouping might be associated with individual differences in behavioral flexibility. To evaluate this, we assessed cognition of individually housed calves (n = 18) at 5 wk of age using a spatial discrimination task conducted in a T-maze to measure initial learning (ability to learn the location of a milk reward) and reversal learning (ability to relearn location of the milk reward when it was switched to opposite arm of the maze). Calves were categorized by reversal learning success (passed, n = 6, or failed, n = 8). Calves that passed the reversal learning stage of the

Combination use of atomoxetine hydrochloride and olanzapine in the treatment of attention-deficit/hyperactivity disorder with comorbid disruptive behavior disorder in children and adolescents 10-18 years of age.

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Holzer, Barry; Lopes, Vasco; Lehman, Robert

2013-08-01

The aim of this study was to assess the use of atomoxetine and olanzapine in combination to treat attention-deficit/hyperactivity disorder (ADHD) and comorbid disruptive behaviors in children and adolescents 10-18 years of age. Eleven subjects ages 10-18 received open-label atomoxetine and olanzapine for a 10 week treatment period. Patients were assessed at baseline, 2 weeks, 4 weeks, 6 weeks, and 10 weeks (posttreatment). ADHD improvement was measured through the ADHD Rating Scale (ADHD-RS) (Investigator and Parent ratings). Aggression was measured through the Modified Overt Aggression Scale (MOAS). The combined use of atomoxetine and olanzapine resulted in statistically significant improvement in ADHD symptoms and overt aggression from baseline to posttreatment. As evidenced by a 33% reduction in symptoms on the ADHD-RS-I and the MOAS, 73% of patients were considered responders to ADHD treatment, whereas 55% responded to treatment for aggression. Both medications were generally well tolerated. Olanzapine treatment was associated with significant weight gain. Patients gained, on average, 3.9 kg. throughout the treatment period. These data provide initial evidence that combination use of atomoxetine and olanzapine for the treatment of ADHD and comorbid disruptive behaviors was effective in reducing ADHD symptoms and aggressive behavior in a 10 week treatment period.

Observations of several disruptions in PLT using soft and ultra-soft x-ray radiation

International Nuclear Information System (INIS)

Eames, D.R.; von Goeler, S.; Sauthoff, N.R.; Stodiek, W.

1979-03-01

The evolution of ultra-soft x-ray radiation (USX, hν approx. > 100 eV) is compared to that of the soft x-ray radiation (SX, hν approx. > 1000 eV) during several disruptions in PLT. Spatial resolution is obtained in both cases by arrays of silicon surface barrier detectors viewing along different chords. During some disruptions the USX behaves quite differently from the SX, and a classification is made based on the USX behavior. Different interpretations of the data are discussed, along with the possibility that these measurements may distinguish between the roles of temperature and impurity density changes during disruptions

Disruptions in Tokamaks

International Nuclear Information System (INIS)

Bondeson, A.

1987-01-01

This paper discusses major and minor disruptions in Tokamaks. A number of models and numerical simulations of disruptions based on resistive MHD are reviewed. A discussion is given of how disruptive current profiles are correlated with the experimentally known operational limits in density and current. It is argued that the q a =2 limit is connected with stabilization of the m=2/n=1 tearing mode for a approx.< 2.7 by resistive walls and mode rotation. Experimental and theoretical observations indicate that major disruptions usually occur in at least two phases, first a 'predisruption', or loss of confinement in the region 1 < q < 2, leaving the q approx.= 1 region almost unaffected, followed by a final disruption of the central part, interpreted here as a toroidal n = 1 external kink mode. (author)

Parent-child interaction therapy for preschool children with disruptive behaviour problems in the Netherlands.

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Abrahamse, Mariëlle E; Junger, Marianne; Chavannes, E Lidewei; Coelman, Frederique J G; Boer, Frits; Lindauer, Ramón J L

2012-06-13

Persistent high levels of aggressive, oppositional and impulsive behaviours, in the early lives of children, are significant risk factors for adolescent and adult antisocial behaviour and criminal activity. If the disruptive behavioural problems of young children could be prevented or significantly reduced at an early age, the trajectory of these behavioural problems leading to adolescent delinquency and adult antisocial behaviour could be corrected. Parent-Child Interaction Therapy (PCIT) is a short-term, evidence-based, training intervention for parents dealing with preschool children, who exhibit behavioural problems. Recently, PCIT was implemented in a Dutch community mental health setting. This present study aims to examine the short-term effects of PCIT on reducing the frequency of disruptive behaviour in young children. This study is based on the data of 37 referred families. Whereby the results of which are derived from an analysis of parent reports of the Eyberg Child Behavior Inventory (ECBI), obtained during each therapeutic session. Furthermore, demographic information, extracted from client files, was also utilized. However, it must be noted that eleven families (27.5%) dropped out of treatment before the treatment protocol was completed. To investigate the development of disruptive behaviour, a non-clinical comparison group was recruited from primary schools (N = 59). The results of this study indicate that PCIT significantly reduces disruptive behaviour in children. Large effect sizes were found for both fathers and mothers reported problems (d = 1.88, d = 1.99, respectively), which is similar to American outcome studies. At post treatment, no differences were found concerning the frequency of behavioural problems of children who completed treatment and those who participated in the non-clinical comparison group. The findings of this study suggest that PCIT is potentially an effective intervention strategy for young children and their

Parent–child interaction therapy for preschool children with disruptive behaviour problems in the Netherlands

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Abrahamse Mariëlle E

2012-06-01

Full Text Available Abstract Background Persistent high levels of aggressive, oppositional and impulsive behaviours, in the early lives of children, are significant risk factors for adolescent and adult antisocial behaviour and criminal activity. If the disruptive behavioural problems of young children could be prevented or significantly reduced at an early age, the trajectory of these behavioural problems leading to adolescent delinquency and adult antisocial behaviour could be corrected. Parent–Child Interaction Therapy (PCIT is a short-term, evidence-based, training intervention for parents dealing with preschool children, who exhibit behavioural problems. Recently, PCIT was implemented in a Dutch community mental health setting. This present study aims to examine the short-term effects of PCIT on reducing the frequency of disruptive behaviour in young children. Methods This study is based on the data of 37 referred families. Whereby the results of which are derived from an analysis of parent reports of the Eyberg Child Behavior Inventory (ECBI, obtained during each therapeutic session. Furthermore, demographic information, extracted from client files, was also utilized. However, it must be noted that eleven families (27.5% dropped out of treatment before the treatment protocol was completed. To investigate the development of disruptive behaviour, a non-clinical comparison group was recruited from primary schools (N = 59. Results The results of this study indicate that PCIT significantly reduces disruptive behaviour in children. Large effect sizes were found for both fathers and mothers reported problems (d = 1.88, d = 1.99, respectively, which is similar to American outcome studies. At post treatment, no differences were found concerning the frequency of behavioural problems of children who completed treatment and those who participated in the non-clinical comparison group. Conclusion The findings of this study suggest that PCIT is potentially an

Perceptual consequences of disrupted auditory nerve activity.

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Zeng, Fan-Gang; Kong, Ying-Yee; Michalewski, Henry J; Starr, Arnold

2005-06-01

Perceptual consequences of disrupted auditory nerve activity were systematically studied in 21 subjects who had been clinically diagnosed with auditory neuropathy (AN), a recently defined disorder characterized by normal outer hair cell function but disrupted auditory nerve function. Neurological and electrophysical evidence suggests that disrupted auditory nerve activity is due to desynchronized or reduced neural activity or both. Psychophysical measures showed that the disrupted neural activity has minimal effects on intensity-related perception, such as loudness discrimination, pitch discrimination at high frequencies, and sound localization using interaural level differences. In contrast, the disrupted neural activity significantly impairs timing related perception, such as pitch discrimination at low frequencies, temporal integration, gap detection, temporal modulation detection, backward and forward masking, signal detection in noise, binaural beats, and sound localization using interaural time differences. These perceptual consequences are the opposite of what is typically observed in cochlear-impaired subjects who have impaired intensity perception but relatively normal temporal processing after taking their impaired intensity perception into account. These differences in perceptual consequences between auditory neuropathy and cochlear damage suggest the use of different neural codes in auditory perception: a suboptimal spike count code for intensity processing, a synchronized spike code for temporal processing, and a duplex code for frequency processing. We also proposed two underlying physiological models based on desynchronized and reduced discharge in the auditory nerve to successfully account for the observed neurological and behavioral data. These methods and measures cannot differentiate between these two AN models, but future studies using electric stimulation of the auditory nerve via a cochlear implant might. These results not only show the unique

The Development of a Program Engagement Theory for Group Offending Behavior Programs.

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Holdsworth, Emma; Bowen, Erica; Brown, Sarah; Howat, Douglas

2017-10-01

Offender engagement in group offending behavior programs is poorly understood and under-theorized. In addition, there is no research on facilitators' engagement. This article presents the first ever theory to address this gap. A Program Engagement Theory (PET) was derived from a constructivist grounded theory analysis that accounts for both facilitators' and offenders' engagement in group offending behavior programs (GOBPs). Interviews and session observations were used to collect data from 23 program facilitators and 28 offenders (group members). The analysis revealed that group members' engagement involved shared identities and moving on as a group. In turn, this was dependent on facilitators personalising treatment frameworks and establishing a hook to help group members move on. The PET emphasizes the importance of considering change during treatment as a process rather than simply a program outcome. Solution-focused (SF) programs were more conducive to engagement and the change process than offence-focused programs.

Disruption of Circadian Rhythms: A Crucial Factor in the Etiology of Depression

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Roberto Salgado-Delgado

2011-01-01

Full Text Available Circadian factors might play a crucial role in the etiology of depression. It has been demonstrated that the disruption of circadian rhythms by lighting conditions and lifestyle predisposes individuals to a wide range of mood disorders, including impulsivity, mania and depression. Also, associated with depression, there is the impairment of circadian rhythmicity of behavioral, endocrine, and metabolic functions. Inspite of this close relationship between both processes, the complex relationship between the biological clock and the incidence of depressive symptoms is far from being understood. The efficiency and the timing of treatments based on chronotherapy (e.g., light treatment, sleep deprivation, and scheduled medication indicate that the circadian system is an essential target in the therapy of depression. The aim of the present review is to analyze the biological and clinical data that link depression with the disruption of circadian rhythms, emphasizing the contribution of circadian desynchrony. Therefore, we examine the conditions that may lead to circadian disruption of physiology and behavior as described in depressive states, and, according to this approach, we discuss therapeutic strategies aimed at treating the circadian system and depression.

Blue Whale (Balaenoptera musculus Behavior and Group Dynamics as Observed from an Aircraft off Southern California

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Kate Lomac-MacNair

2016-02-01

Full Text Available Group behavior and interactions of endangered blue whales (Balaenoptera musculus have not been systematically studied. Such behavioral data are often overlooked when assessing anthropogenic effects. Yet behavioral data are necessary to compare “normal” behaviors with behavior affected by anthropogenic factors of concern relative to effective management and recovery of blue whales. For a baseline study, we hypothesized that the response variables sighting rate, group size, calf presence and group cohesion (i.e., spacing between individuals within a group differed according to the spatio-temporal explanatory variables behavioral state, time of day, season, water depth and distance from shore. To address our hypotheses, we flew systematic line transect surveys in southern California and collected focal group data. Two sets of data were separately analyzed using different sampling approaches: (1 point sample data associated with the first sighting of a blue whale(s, and (2 extended all-occurrence focal group behavioral sampling data (i.e., focal follows collected on a subsample of all sightings while the aircraft circled at a radial distance of approximately 0.5-1 km and an altitude of 1,500 m for extended periods of 5 – 60 minutes. Chi-square contingency table and G² analyses were used to assess statistical relationships between response and explanatory variables. We conducted 18 one-week-long aerial surveys spanning October 2008 through May 2013 (at least once during every month except December, totaling 87,555 km of observation effort. Seventy blue whale sightings (117 individuals were seen, ranging in size from 1 – 6 whales, and focal follow was performed on over half (55% of these sightings. Results supported our hypotheses that blue whale group characteristics were related to behavioral state and spatio-temporal variables. Sighting rates were significantly highest during summer followed by spring, fall, and winter. Group type differed

Structural responses to plasma disruptions in toroidal shells

International Nuclear Information System (INIS)

Tillack, M.S.; Kazimi, M.S.; Lidsky, L.M.

1985-01-01

The induced pressures, stresses and strains in unrestrained axisymmetric toroidal shells are studied to scope the behavior of tokamak first walls during plasma disruptions. The modeling includes a circuit analog representation of the shell to solve for induced currents and pressures, and a separate quasi-static 1-D finite element solution for the mechanical response. This work demonstrates that the stresses in tokamkak first walls due to plasma disruption may be large, but to first order will not cause failure in the bulk structure. However, stress concentrations at structural supports and discontinuities together with resonant effects can result in large enhancements of the stresses, which could contribute to plastic deformation or failure when added to the already large steady state thermal and pressure loading of the first wall

Study of the generation and suppression of runaway currents in provoked disruptions in J-TEXT

Energy Technology Data Exchange (ETDEWEB)

Chen, Z.Y., E-mail: zychen@mail.hust.edu.cn [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074 (China); Chen, Z.P., E-mail: zpchen@mail.hust.edu.cn [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074 (China); Zhang, Y.; Jin, W.; Fang, D.; Ba, W.G.; Wang, Z.J.; Zhang, M.; Yang, Z.J.; Ding, Y.H.; Zhuang, G. [State Key Laboratory of Advanced Electromagnetic Engineering and Technology, College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074 (China)

2012-05-14

Runaway currents following disruptions have an important effect on the first wall for the next generation tokamak. The behaviors of runaway currents following intentional provoked disruptions have been investigated in the J-TEXT tokamak. It is found that the runaway current generation following provoked disruptions depends on both the toroidal magnetic field and the plasma current. The conversion efficiency of pre-disruptive plasma currents into runaway currents is in the ranges of 30% to 60% in J-TEXT. The runaway currents can be avoided by the intensive gas puffing of H{sub 2} due to the low multiplication factor in J-TEXT. -- Highlights: ► The regime of runaway generation in disruptions in J-TEXT has been established. ► The magnetic field threshold for runaway current generation in disruptions is 2.2 T. ► The conversion efficiency of runaway current is in the ranges of 30% to 60%. ► The runaway currents can be avoided by the intensive gas puffing of H{sub 2}.

Study of the generation and suppression of runaway currents in provoked disruptions in J-TEXT

International Nuclear Information System (INIS)

Chen, Z.Y.; Chen, Z.P.; Zhang, Y.; Jin, W.; Fang, D.; Ba, W.G.; Wang, Z.J.; Zhang, M.; Yang, Z.J.; Ding, Y.H.; Zhuang, G.

2012-01-01

Runaway currents following disruptions have an important effect on the first wall for the next generation tokamak. The behaviors of runaway currents following intentional provoked disruptions have been investigated in the J-TEXT tokamak. It is found that the runaway current generation following provoked disruptions depends on both the toroidal magnetic field and the plasma current. The conversion efficiency of pre-disruptive plasma currents into runaway currents is in the ranges of 30% to 60% in J-TEXT. The runaway currents can be avoided by the intensive gas puffing of H 2 due to the low multiplication factor in J-TEXT. -- Highlights: ► The regime of runaway generation in disruptions in J-TEXT has been established. ► The magnetic field threshold for runaway current generation in disruptions is 2.2 T. ► The conversion efficiency of runaway current is in the ranges of 30% to 60%. ► The runaway currents can be avoided by the intensive gas puffing of H 2 .

"Dog ear" formation after double-stapled low anterior resection as a risk factor for anastomotic disruption.

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Roumen, R M; Rahusen, F T; Wijnen, M H; Croiset van Uchelen, F A

2000-04-01

The aim of this study was to investigate the possible deleterious effect of the lateral intersecting margins (so-called dog ears) on anastomotic disruption after experimentally performed double-stapled anastomoses. Two groups of double-stapled side-to-end anastomoses were performed using pig small intestines. Group A consisted of 35 circular anastomoses and Group B of 32 double-stapled anastomoses with a bilateral dog ear. In both groups bursting pressures were tested using a water-filled, pressure-controlled automatic pumping system (Hamou Endomat), and special attention was paid to the location(s) in the anastomoses were the disruption(s) occurred. In Group A bursting pressures were significantly higher than in Group B (median pressure, 90 vs. 60 mmHg; P dog ear. We conclude that the lateral intersections of double-stapled anastomoses are a structural weak spot and that the currently most often applied double-stapled anastomosis is a less effective type of anastomosis than a complete circular one. Resolving this technical problem might help to reduce the number of anastomotic disruptions after low anterior resections.

Job insecurity and discretionary behaviors: Social exchange perspective versus group value model.

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Piccoli, Beatrice; De Witte, Hans; Reisel, William D

2017-02-01

This study examines the relationship between job insecurity and discretionary behaviors, that is, organizational citizenship behaviors (OCB) and counterproductive work behaviors (CWB), with the purpose to extend knowledge on the theoretical explanations for these outcomes. Considering the employment relationship with the organization, two different perspectives are suggested and compared in a multiple mediator model, in order to understand the reasons for discretionary behaviors. We draw upon social exchange theory as the basis of psychological contract perceptions and we rely on the group value model to explain organizational justice evaluations. A total of 570 blue-collar workers in Italy participated in our survey. The results show that job insecurity is indirectly related to OCB and CWB through psychological contract breach and organizational injustice. Both mediational mechanisms have equivalent strength in explaining the relationships, namely, they are complementary processes in accounting for both behaviors. These findings suggest that employees' behaviors in job insecure contexts are driven not only by concerns related to the exchange of resources with the organization, but also by evaluations about their value as important members of the group. © 2016 Scandinavian Psychological Associations and John Wiley & Sons Ltd.

Obesity promotes oxidative stress and exacerbates blood-brain barrier disruption after high-intensity exercise

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Hee-Tae Roh

2017-06-01

Conclusion: Our study suggests that episodic vigorous exercise can increase oxidative stress and blood neurotrophic factor levels and induce disruption of the BBB. Moreover, high levels of neurotrophic factor in the blood after exercise in the obese group may be due to BBB disruption, and it is assumed that oxidative stress was the main cause of this BBB disruption.

Estimation of post disruption plasma temperature for fast current quench Aditya plasma shots

International Nuclear Information System (INIS)

Purohit, S.; Chowdhuri, M.B.; Joisa, Y.S.; Raval, J.V.; Ghosh, J.; Jha, R.

2013-01-01

Characteristics of tokamak current quenches are an important issue for the determination of electromagnetic forces that act on the in-vessel components and vacuum vessel during major disruptions. It is observed that thermal quench is followed by a sharp current decay. Fast current quench disruptive plasma shots were investigated for ADITYA tokamak. The current decay time was determined for the selected shots, which were in the range of 0.8 msec to 2.5 msec. This current decay information was then applied to L/R model, frequently employed for the estimation of the current decay time in tokamak plasmas, considering plasma inductance and plasma resistivity. This methodology was adopted for the estimation of the post disruption plasma temperature using the experimentally observed current decay time for the fast current quench disruptive ADITYA plasma shots. The study reveals that for the identified shots there is a constant increase in the current decay time with the post disruption plasma temperature. The investigations also explore the behavior post disruption plasma temperature and the current decay time as a function of the edge safety factor, Q. Post disruption plasma temperature and the current decay time exhibits a decrease with the increase in the value Q. (author)

Individual killer whale vocal variation during intra-group behavioral dynamics

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Grebner, Dawn M.

The scientific goal of this dissertation was to carefully study the signal structure of killer whale communications and vocal complexity and link them to behavioral circumstances. The overall objective of this research sought to provide insight into killer whale call content and usage which may be conveying information to conspecifics in order to maintain group cohesion. Data were collected in the summers of 2006 and 2007 in Johnstone Strait, British Columbia. For both individuals and small groups, vocalizations were isolated using a triangular hydrophone array and the behavioral movement patterns were captured by a theodolite and video camera positioned on a cliff overlooking the hyrophone locations. This dissertation is divided into four analysis chapters. In Chapter 3, discriminant analysis was used to validate the four N04 call subtypes which were originally parsed due to variations in slope segments. The first two functions of the discriminant analysis explained 97% of the variability. Most of the variability for the N04 call was found in the front convex and the terminal portions of the call, while very little variability was found in the center region of the call. This research revealed that individual killer whales produced multiple subtypes of the N04 call. No correlations of behaviors to acoustic parameters obtained were found. The aim of the Chapter 4 was to determine if killer whale calling behavior varied prior to and after the animals had joined. Pulsed call rates were found to be greater pre- compared to post-joining events. Two-way vocal exchanges were more common occurring 74% of the time during pre-joining events. In Chapter 5, initiated and first response to calls varied between age/sex class groups when mothers were separated from an offspring. Solo mothers and calves initiated pulsed calls more often than they responded. Most of the no vocal responses were due to mothers who were foraging. Finally, observations of the frequency split in N04

Trends in high-risk sexual behaviors among general population groups in China: a systematic review.

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Cai, Rui; Richardus, Jan Hendrik; Looman, Caspar W N; de Vlas, Sake J

2013-01-01

The objective of this review was to investigate whether Chinese population groups that do not belong to classical high risk groups show an increasing trend of engaging in high-risk sexual behaviors. We systematically searched the English and Chinese literature on sexual risk behaviors published between January 1980 and March 2012 in PubMed and the China National Knowledge Infrastructure (CNKI). We included observational studies that focused on population groups other than commercial sex workers (CSWs) and their clients, and men who have sex with men (MSM) and quantitatively reported one of the following indicators of recent high-risk sexual behavior: premarital sex, commercial sex, multiple sex partners, condom use or sexually transmitted infections (STIs). We used generalized linear mixed model to examine the time trend in engaging in high-risk sexual behaviors. We included 174 observational studies involving 932,931 participants: 55 studies reported on floating populations, 73 on college students and 46 on other groups (i.e. out-of-school youth, rural residents, and subjects from gynecological or obstetric clinics and premarital check-up centers). From the generalized linear mixed model, no significant trends in engaging in high-risk sexual behaviors were identified in the three population groups. Sexual risk behaviors among certain general population groups have not increased substantially. These groups are therefore unlikely to incite a STI/HIV epidemic among the general Chinese population. Because the studied population groups are not necessarily representative of the general population, the outcomes found may not reflect those of the general population.

Moms in motion: a group-mediated cognitive-behavioral physical activity intervention

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Brawley Lawrence R

2006-08-01

Full Text Available Abstract Background When examining the prevalence of physical inactivity by gender and age, women over the age of 25 are at an increased risk for sedentary behavior. Childbearing and motherhood have been explored as one possible explanation for this increased risk. Post natal exercise studies to date demonstrate promising physical and psychological outcomes, however few physical activity interventions have been theory-driven and tailored to post natal exercise initiates. The purpose of this study was to compare the effects of a group-mediated cognitive behavioral intervention based upon social-cognitive theory and group dynamics (GMCB to a standard care postnatal exercise program (SE. Method A randomized, two-arm intervention design was used. Fifty-seven post natal women were randomized to one of two conditions: (1 a standard exercise treatment (SE and (2 a standard exercise treatment plus group-mediated cognitive behavioral intervention (GMCB. Participants in both conditions participated in a four-week intensive phase where participants received standard exercise training. In addition, GMCB participants received self-regulatory behavioral skills training via six group-mediated counseling sessions. Following the intensive phase, participants engaged in a four-week home-based phase of self-structured exercise. Measures of physical activity, barrier efficacy, and proximal outcome expectations were administered and data were analyzed using ANCOVA procedures. Results and discussion ANCOVA of change scores for frequency, minutes, and volume of physical activity revealed significant treatment effects over the intensive and home-based phases (p's Conclusion While both exercise programs resulted in improvements to exercise participation, the GMCB intervention produced greater improvement in overall physical activity, barrier efficacy and proximal outcome expectations.

Handling Disruptive Innovations in HE: Lessons from Two Contrasting Case Studies

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Powell, Stephen; Olivier, Bill; Yuan, Li

2015-01-01

This article aims to show how Higher Education Institutions (HEIs) can recognise and best respond to a disruptive innovation. A disruptive innovation creates a new business model using a new process and usually a new technology to offer a product or service with new features and/or lower cost and initially addresses a group of people who are…

Spontaneous locomotor activity correlates with the degranulation of mast cells in the meninges rather than in the thalamus: disruptive effect of cocaine.

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Larson, Alice A; Thomas, Mark J; McElhose, Alex; Kovács, Katalin J

2011-06-13

Mast cells are located in the central nervous system (CNS) of many mammals and stress induces their degranulation. We postulated that mast cells are associated with wakefulness and stimulatory tone in the CNS, as reflected by spontaneous motor activity. Because stress also precipitates drug-seeking behavior in cocaine addicts, we also postulated that cocaine manifests its effects through this relationship. We investigated the influence of single and repeated injections of cocaine on circulating corticosterone, motor activity and degranulation of mast cells in both the thalamus and meninges of mice. Mice were subjected to 5 consecutive days of cocaine or saline followed by a single injection of cocaine or saline 11 days later. Spontaneous locomotor activity was measure for 1h after the final injection before death. Neither a single injection nor prior treatment with cocaine increased motor activity compared to saline-injected controls, however, repeated administration of cocaine induced a significant sensitization to its behavioral effect when delivered 11 days later. In mice that received only saline, motor activity correlated positively with mast cell degranulation in the meninges but not in the thalamus. Cocaine, regardless of the treatment schedule, disrupted this correlation. The concentration of corticosterone did not differ amongst groups and did not correlate with either behavior or mast cell parameters in any group. The correlation between behavioral activity and the mast cell degranulation in the meninges suggests that these parameters are linked. The disruptive effect of cocaine on this relationship indicates a role downstream from mast cells in the regulation of motor activity. Copyright © 2011 Elsevier B.V. All rights reserved.

Efficacy of a multimodal treatment for disruptive behavior disorders in children and adolescents: focus on internalizing problems.

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Masi, Gabriele; Milone, Annarita; Paciello, Marinella; Lenzi, Francesca; Muratori, Pietro; Manfredi, Azzurra; Polidori, Lisa; Ruglioni, Laura; Lochman, John E; Muratori, Filippo

2014-11-30

Disruptive Behavior Disorders (DBDs) are among the most common reasons for youth referrals to mental health clinics. Aim of this study is to compare short and medium term efficacy of a multimodal treatment program (MTP), compared to community care (treatment-as-usual, TAU). The sample included 135 youths with DBDs (113 males, age range 9-15 years, mean age 12±2.5 years) were assigned either to a MTP (n=64), or addressed to community care for a TAU (n=71). Outcome measures were the Child Behaviour Checklist (CBCL) and the Children's Global Assessment Scale (C-GAS). All subjects were assessed at the baseline (T0), after 1-year treatment (T1) and after a 2-year follow-up (T2). Compared with patients receiving TAU, youths in the MTP showed, both at T1 and T2, significantly lower scores on CBCL Externalizing Scale, Internalizing Scale, Anxious/Depressed, Social Problems, and Aggressive Behavior, and higher scores at the C-GAS. Improvement in Internalizing Scales was particularly evident, with a shift from the clinical to the non-clinical range. Rate of use of mental health services and scholastic failure were reduced in the MTP. It is suggested that the improvement of the Internalizing symptoms is a crucial component of the therapeutic process in this MTP. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

Wound Disruption Following Colorectal Operations.

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Moghadamyeghaneh, Zhobin; Hanna, Mark H; Carmichael, Joseph C; Mills, Steven; Pigazzi, Alessio; Nguyen, Ninh T; Stamos, Michael J

2015-12-01

Postoperative wound disruption is associated with high morbidity and mortality. We sought to identify the risk factors and outcomes of wound disruption following colorectal resection. The American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database was used to examine the clinical data of patients who underwent colorectal resection from 2005 to 2013. Multivariate regression analysis was performed to identify risk factors of wound disruption. We sampled a total of 164,297 patients who underwent colorectal resection. Of these, 2073 (1.3 %) had wound disruption. Patients with wound disruption had significantly higher mortality (5.1 vs. 1.9 %, AOR: 1.46, P = 0.01). The highest risk of wound disruption was seen in patients with wound infection (4.8 vs. 0.9 %, AOR: 4.11, P disruption such as chronic steroid use (AOR: 1.71, P disruption compared to open surgery (AOR: 0.61, P disruption occurs in 1.3 % of colorectal resections, and it correlates with mortality of patients. Wound infection is the strongest predictor of wound disruption. Chronic steroid use, obesity, severe COPD, prolonged operation, non-elective admission, and serum albumin level are strongly associated with wound disruption. Utilization of the laparoscopic approach may decrease the risk of wound disruption when possible.

A cognitive/behavioral group intervention for weight loss in patients treated with atypical antipsychotics.

Science.gov (United States)

Weber, Mary; Wyne, Kathleen

2006-03-01

Obesity and diabetes have caused problems for individuals with schizophrenia long before atypical antipsychotic agents. The prevalence of obesity, insulin resistance, impaired glucose tolerance, type 2 diabetes mellitus, dyslipidemia, and the Metabolic Syndrome has increased in people with schizophrenia as compared to the general population. Risk reduction studies for persons with obesity, diabetes, and cardiovascular disease indicate that cognitive/behavioral interventions that promote motivation and provide strategies to overcome the barriers in adherence to diet and activity modification are effective interventions for weight management and risk reduction. In the landmark multi-center randomized-controlled trial study, the Diabetes Prevention Project (DPP), a cognitive/behavioral intervention, was more successful in producing weight loss and preventing diabetes than the drugs metformin, troglitazone or placebo. This pilot study examined the effectiveness of a cognitive/behavioral group intervention, modified after the DPP program, in individuals with schizophrenia or schizoaffective disorder taking atypical antipsychotics in a large urban public mental health system. Outcome measures included body weight, body mass index, waist-hip ratios, and fasting glucose levels. Both groups demonstrated elevated fasting glucose levels and were obese with a mean BMI of 33. The group that received the cognitive/behavioral group intervention lost more weight than the treatment as usual group. The CB group participants lost an average of 5.4 lb or 2.9% of body weight, and those in the control group lost 1.3 lb or 0.6% body weight. The range of weight loss for the treatment group was from 1 to 20 lb. This pilot study has demonstrated that weight loss is possible with cognitive/behavioral interventions in a population with a psychotic disorder.

The Healing Species: Animal-Assisted Character Education for Improving Student Behavior

Directory of Open Access Journals (Sweden)

Wanda J. Pearson

2011-03-01

Full Text Available The Healing Species program aims to reduce disruptive behaviors at school by increasing students’ abilities to avoid conflict when possible and to resolve conflicts peaceably when they occur. The program’s 11 lessons incorporate elements of behavior theory that postulate behavior follows belief. This study hypothesized that 5th and 6th grade students who completed the Healing Species curriculum would show fewer normative beliefs favoring aggression, greater empathy, and fewer disciplinary infractions, than a comparable group of students who did not receive the Healing Species program. Lessons included the participation of rescued dogs to emphasize compassion, empathy, responsibility, and forgiveness. Study results offered evidence of improved overall behavior and specific reductions in violence and aggression.

Disrupted Working Memory Circuitry in Adolescent Psychosis

Directory of Open Access Journals (Sweden)

Ariel Eckfeld

2017-08-01

Full Text Available Individuals with schizophrenia (SZ consistently show deficits in spatial working memory (WM and associated atypical patterns of neural activity within key WM regions, including the dorsolateral prefrontal cortex (dlPFC and parietal cortices. However, little research has focused on adolescent psychosis (AP and potential age-associated disruptions of WM circuitry that may occur in youth with this severe form of illness. Here we utilized each subject’s individual spatial WM capacity to investigate task-based neural dysfunction in 17 patients with AP (16.58 ± 2.60 years old as compared to 17 typically developing, demographically comparable adolescents (18.07 ± 3.26 years old. AP patients showed lower behavioral performance at higher WM loads and lower overall WM capacity compared to healthy controls. Whole-brain activation analyses revealed greater bilateral precentral and right postcentral activity in controls relative to AP patients, when controlling for individual WM capacity. Seed-based psychophysiological interaction (PPI analyses revealed significantly greater co-activation between the left dlPFC and left frontal pole in controls relative to AP patients. Significant group-by-age interactions were observed in both whole-brain and PPI analyses, with AP patients showing atypically greater neural activity and stronger coupling between WM task activated brain regions as a function of increasing age. Additionally, AP patients demonstrated positive relationships between right dlPFC neural activity and task performance, but unlike healthy controls, failed to show associations between neural activity and out-of-scanner neurocognitive performance. Collectively, these findings are consistent with atypical WM-related functioning and disrupted developmental processes in youth with AP.

Biographical disruption, adjustment and reconstruction of everyday occupations and work participation after mild traumatic brain injury. A focus group study.

Science.gov (United States)

Sveen, Unni; Søberg, Helene Lundgaard; Østensjø, Sigrid

2016-11-01

To explore traumatic brain injury (TBI) as a biographical disruption and to study the reconstruction of everyday occupations and work participation among individuals with mild TBI. Seven focus groups were conducted with 12 women and 8 men (22-60 years) who had sustained mild TBI and participated in a return-to-work program. Interviews were analyzed using qualitative content analysis. Four interrelated themes emerged: disruption of occupational capacity and balance; changes in self-perceptions; experience of time; and occupational adjustment and reconstruction. The meaning of the impairments lies in their impact on the individual's everyday occupations. The abandonment of meaningful daily occupations and the feeling of not recognizing oneself were experienced as threats to the sense of self. Successful integration of the past, present and future was paramount to continuing life activities. The unpredictability of the future seemed to permeate the entire process of adjustment and reconstruction of daily life. Our findings show that the concept of time is important in understanding and supporting the reconstruction of daily life after TBI. The fundamental work of rehabilitation is to ameliorate the disruptions caused by the injury, restoring a sense of personal narrative and supporting the ability to move forward with life. Implications for Rehabilitation Individuals with a protracted recovery after a mild traumatic brain injury must reconstruct a new way of being and acting in the world to achieve biographical continuity. The perceived anxiety regarding changes in self and occupational identity, as well as loss of control over the future, can be attenuated through informational sessions during the hospital stay and at follow-up visits. The significant personal costs of returning to full-time employment too early indicate the need for early and ongoing vocational support in achieving a successful return to work.

Strategy development for anticipating and handling a disruptive technology.

Science.gov (United States)

Chan, Stephen

2006-10-01

The profession of radiology has greatly benefited from the introduction of new imaging technologies throughout its history. Therefore, it would seem reasonable for radiologists to believe that the emergence of a new imaging technology can generally be foreseen with sufficient advance notice to allow the appropriate levels of time, effort, and money to be devoted toward incorporating it into radiology practice. However, in his seminal work, Christiansen characterized a new form of technologic innovation, known as "disruptive technology," whose emergence often heralds the replacement of market leaders in an industry by competitors who are quicker in adopting and deploying the new technology. This article briefly describes the phenomenon of disruptive technology and addresses the challenges that organizations face in dealing with disruptive technology. The article raises 4 questions about the future of radiology: (1) Are health care and radiology vulnerable to disruptive technology? (2) What kinds of change may be in store for the radiology profession? (3) Can the radiology profession prepare itself to recognize and respond to a disruptive innovation among a group of new imaging technologies? and (4) How should a radiology organization decide whether to invest significant resources in a potentially disruptive technology? This article addresses these questions by reviewing key insights from leading "gurus" in the fields of competitive strategy and technology management and applying them to radiology. This illustrates how and why (despite past successes) the radiology profession may still have a blind spot in recognizing and handling disruptive technologies.

Health-seeking behavior and transmission dynamics in the control of influenza infection among different age groups.

Science.gov (United States)

You, Shu-Han; Chen, Szu-Chieh; Liao, Chung-Min

2018-01-01

It has been found that health-seeking behavior has a certain impact on influenza infection. However, behaviors with/without risk perception on the control of influenza transmission among age groups have not been well quantified. The purpose of this study was to assess to what extent, under scenarios of with/without control and preventive/protective behaviors, the age-specific network-driven risk perception influences influenza infection. A behavior-influenza model was used to estimate the spread rate of age-specific risk perception in response to an influenza outbreak. A network-based information model was used to assess the effect of network-driven risk perception information transmission on influenza infection. A probabilistic risk model was used to assess the infection risk effect of risk perception with a health behavior change. The age-specific overlapping percentage was estimated to be 40%-43%, 55%-60%, and 19%-35% for child, teenage and adult, and elderly age groups, respectively. Individuals perceive the preventive behavior to improve risk perception information transmission among teenage and adult and elderly age groups, but not in the child age group. The population with perceived health behaviors could not effectively decrease the percentage of infection risk in the child age group, whereas for the elderly age group, the percentage of decrease in infection risk was more significant, with a 97.5th percentile estimate of 97%. The present integrated behavior-infection model can help health authorities in communicating health messages for an intertwined belief network in which health-seeking behavior plays a key role in controlling influenza infection.

Ingestive behavior of lambs confined in individual and group stalls.

Science.gov (United States)

Filho, A Eustáquio; Carvalho, G G P; Pires, A J V; Silva, R R; Santos, P E F; Murta, R M; Pereira, F M

2014-02-01

The experiment was conducted to evaluate the ingestive behavior of lambs confined in individual and group stalls. We used thirty-four lambs in their growing phase, aged an average of three months, with mean initial live weight of 17.8±5.2 kg. They were allotted in a completely randomized design with 24 animals kept in individual stalls and 10 animals confined as a group. The experiment lasted for a total of 74 days, and the first 14 days were dedicated to the animals' adaption to the management, facilities and diets. The data collection period lasted 60 days, divided into three 20-d periods for the behavior evaluation. The animals were subjected to five days of visual observation during the experiment period, by the quantification of 24 h a day, with evaluations on the 15th day of each period and an interim evaluation consisting of two consecutive days on the 30th and 31st day of the experiment. The animals confined as a group consumed less (pbehavior.

An intervention to reduce HIV risk behavior of substance-using men who have sex with men: a two-group randomized trial with a nonrandomized third group.

Directory of Open Access Journals (Sweden)

Gordon Mansergh

2010-08-01

Full Text Available Substance use during sex is associated with sexual risk behavior among men who have sex with men (MSM, and MSM continue to be the group at highest risk for incident HIV in the United States. The objective of this study is to test the efficacy of a group-based, cognitive-behavioral intervention to reduce risk behavior of substance-using MSM, compared to a randomized attention-control group and a nonrandomized standard HIV-testing group.Participants (n = 1,686 were enrolled in Chicago, Los Angeles, New York City, and San Francisco and randomized to a cognitive-behavioral intervention or attention-control comparison. The nonrandomized group received standard HIV counseling and testing. Intervention group participants received six 2-h group sessions focused on reducing substance use and sexual risk behavior. Attention-control group participants received six 2-h group sessions of videos and discussion of MSM community issues unrelated to substance use, sexual risk, and HIV/AIDS. All three groups received HIV counseling and testing at baseline. The sample reported high-risk behavior during the past 3 mo prior to their baseline visit: 67% reported unprotected anal sex, and 77% reported substance use during their most recent anal sex encounter with a nonprimary partner. The three groups significantly (p0.05 from each other at 3-, 6-, and 12-mo follow-up. Outcomes for the 2-arm comparisons were not significantly different at 12-mo follow-up (e.g., unprotected anal sex, odds ratio = 1.14, confidence interval = 0.86-1.51, nor at earlier time points. Similar results were found for each outcome variable in both 2- and 3-arm comparisons.These results for reducing sexual risk behavior of substance-using MSM are consistent with results of intervention trials for other populations, which collectively suggest critical challenges for the field of HIV behavioral interventions. Several mechanisms may contribute to statistically indistinguishable reductions in risk

A System Shock Approach to Modelling Clandestine Network Disruption

National Research Council Canada - National Science Library

Dipper, Tamlan

2004-01-01

.... This model took as its focus the disruption of successful terrorist operations. In doing so it drew upon operational art, group behavioural studies, and psychological research into problem solving...

Unintended Cognitive, Affective, and Behavioral Consequences of Group Assignments

Science.gov (United States)

Neu, Wayne A.

2012-01-01

Pedagogical strategies can be thought of as a set of stimuli placed in students' environment to influence their cognition, affect, and behavior. The design of strategies such as group assignments and a comprehensive understanding of their consequences for students should then include an analysis of all three of these elements and the…

Endocrine Disrupting Chemicals (EDCs)

Science.gov (United States)

... Center Pacientes y Cuidadores Hormones and Health The Endocrine System Hormones Endocrine Disrupting Chemicals (EDCs) Steroid and Hormone ... Hormones and Health › Endocrine Disrupting Chemicals (EDCs) The Endocrine System Hormones Endocrine Disrupting Chemicals (EDCs) EDCs Myth vs. ...

Interplay between intrinsic plasma rotation and magnetic island evolution in disruptive discharges

Energy Technology Data Exchange (ETDEWEB)

Ronchi, G.; Severo, J. H. F. [Universidade de São Paulo, Instituto de Física (Brazil); Salzedas, F. [Universidade do Porto, Faculdade de Engenharia (Portugal); Galvão, R. M. O., E-mail: rgalvao@if.usp.br; Sanada, E. K. [Universidade de São Paulo, Instituto de Física (Brazil)

2016-05-15

The behavior of the intrinsic toroidal rotation of the plasma column during the growth and eventual saturation of m/n = 2/1 magnetic islands, triggered by programmed density rise, has been carefully investigated in disruptive discharges in TCABR. The results show that, as the island starts to grow and rotate at a speed larger than that of the plasma column, the angular frequency of the intrinsic toroidal rotation increases and that of the island decreases, following the expectation of synchronization. As the island saturates at a large size, just before a major disruption, the angular speed of the intrinsic rotation decreases quite rapidly, even though the island keeps still rotating at a reduced speed. This decrease of the toroidal rotation is quite reproducible and can be considered as an indicative of disruption.

Computation of electromagnetic effects in a tokamak due to a plasma disruption

International Nuclear Information System (INIS)

Turner, L.R.

1989-01-01

To model the consequences of a plasma disruption in a tokamak one must combine a code that computes the detailed MHD behavior of the plasma with one that treats the three-dimensional features of the conducting toroidal components around the plasma. The NET (Next European Torus) Team have undertaken a treatment of electromagnetic effects from plasma disruptions using both open loop and closed loop integration of codes. In America, workers at Oak Ridge National Laboratory, Idaho National Engineering Laboratory, and Argonne National Laboratory have looked at plasma disruption effects on the ITER blanket using the codes TSC and EDDYNET. Results show how the forces on a blanket segment depend on the number and size of the segments and on the gap between them. 9 refs., 4 figs., 1 tab

Effectiveness of Cognitive- behavioral Group Therapy on Insomnia Symptoms in Students

OpenAIRE

A Abollahi; AM Nazar; J Hasani; M Darharaj; A Behnam Moghadam

2015-01-01

Background & aim: Insomnias is associated with considerable problems in educational, vocational, social and familial performance. The purpose of present research was to investigate the effectiveness of Cognitive-Behavior group therapy on improvement of insomnia symptoms in students. Methods: The present clinical trial study was conducted on twenty-four students who were randomly assigned into two groups of case and the control (n = 12). The experimental group was participated in eight se...

Pilot study of a brief dialectical behavior therapy skills group for jail inmates.

Science.gov (United States)

Moore, Kelly E; Folk, Johanna B; Boren, Emily A; Tangney, June P; Fischer, Sarah; Schrader, Shannon W

2018-02-01

Regulating emotions, refraining from impulsive, maladaptive behavior, and communicating effectively are considered primary treatment needs among jail inmates. Dialectical behavior therapy (DBT; Linehan, 1993a) skills address these deficits and have been implemented in long-term correctional settings, but have yet to be adapted for general population inmates in short-term jail settings. This study assessed the feasibility and acceptability of a DBT skills group in a jail setting, as well as its utility in improving coping skills and emotional/behavioral dysregulation. Male jail inmates participated in an 8-week DBT skills group and completed pre- and posttest assessments of coping skills, emotional/behavioral dysregulation, and measures of treatment acceptability. Out of 27 who started therapy, 16 completed it, primarily due to involuntary attrition such as transfer to another correctional facility. Although several logistical issues arose during this pilot study, preliminary results suggest that a brief DBT skills group is feasible and acceptable in a jail setting, and may improve coping skills and reduce externalization of blame among general population jail inmates. This study lays the groundwork for larger, controlled trials of abbreviated DBT skills groups for general population inmates in short-term jail settings. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Understanding the Role of Behavior and Cognitions in a Group Exercise Setting

OpenAIRE

Shrigley, Tina L.; Dawson, Kimberley A.

2004-01-01

The first purpose of the present study examined whether individuals with different exercise behaviors (classified by attendance) experienced different or similar cognitive patterns. It was hypothesized that different behavior would lead to different cognitive appraisals. It was predicted that there would be a difference between the three behavioral frequency groups with regard to self-efficacy measures and goal measures. The second purpose of the study was to describe, evaluate and observe wh...

Disruptions in the TFTR tokamak

International Nuclear Information System (INIS)

Janos, A.; Fredrickson, E.D.; McGuire, K.; Batha, S.H.; Bell, M.G.; Bitter, M.; Budny, R.; Bush, C.E.; Efthimion, P.C.; Hawryluk, R.J.; Hill, K.W.; Hosea, J.; Jobes, F.C.; Johnson, D.W.; Levinton, F.; Mansfield, D.; Meade, D.; Medley, S.S.; Monticello, D.; Mueller, D.; Nagayama, Y.; Owens, D.K.; Park, H.; Park, W.; Post, D.E.; Schivell, J.; Strachan, J.D.; Taylor, G.; Ulrickson, M.; Goeler, S. von; Wilfrid, E.; Wong, K.L.; Yamada, M.; Young, K.M.; Zarnstorff, M.C.; Zweben, S.J.; Drake, J.F.; Kleva, R.G.; Fleischmann, H.H.

1993-03-01

For a successful reactor, it will be useful to predict the occurrence of disruptions and to understand disruption effects including how a plasma disrupts onto the wall and how reproducibly it does so. Studies of disruptions on TFTR at both high-β pol and high-density have shown that, in both types, a fast growing m/n=1/1 mode plays an important role. In highdensity disruptions, a newly observed fast m/n = 1/1 mode occurs early in the thermal decay phase. For the first time in TFTR q-profile measurements just prior to disruptions have been made. Experimental studies of heat deposition patterns on the first wall of TFTR due to disruptions have provided information on MHD phenomena prior to or during the disruption, how the energy is released to the wall, and the reproducibility of the heat loads from disruptions. This information is important in the design of future devices such as ITER. Several new processes of runaway electron generation are theoretically suggested and their application to TFTR and ITER is considered, together with a preliminary assessment of x-ray data from runaways generated during disruptions

Forecast of TEXT plasma disruptions using soft X-rays as input signal in a neural network

International Nuclear Information System (INIS)

Vannucci, A.; Oliveira, K.A.; Tajima, T.; Tajima, Y.J.

2001-01-01

A feed-forward neural network is used to forecast major and minor disruptions in TEXT tokamak discharges. Using the experimental data of soft X-ray signals as input data, the neural net is trained with one disruptive plasma discharge, while a different disruptive discharge is used for validation. After proper training, the net works with the same set of weights, it is then used to forecast disruptions in two other different plasma discharges. It is observed that the neural net is capable of predicting the onset of a disruption up to 3.12 ms in advance. From what we observe in the predictive behavior of our network, speculations are made whether the disruption triggering mechanism is associated with an increase in the m=2 magnetic island, that disturbs the central part of the plasma column afterwards, or the initial perturbation has first occurred in the central part of the plasma column and then the m=2 MHD mode is destabilized. (author)

Social Class and Group Size as Predictors of Behavior in Male Equus kiang

Directory of Open Access Journals (Sweden)

Prameek M. Kannan

2017-11-01

Full Text Available Ethograms provide a systematic approach to identify and quantify the repertoire of behaviors of an organism. This information may assist animal welfare in zoos, increase awareness of conservation needs, and help curb high-risk behaviors during human-wildlife conflict. Our primary objective was to utilize an equid ethogram to produce activity budgets for Equus kiang males, a social ungulate that is among the least-studied mammals worldwide, and unknown to the ethological literature. We recently reported the existence of three social classes of this species; Territorial males, Bachelor males and ‘Transient’ males. Therefore, our secondary objective was to compare activity budgets in each of these three groups. We found that kiang spent >70% of their time performing six behaviors: vigilance (34%, locomotion (24.2%, resting (14.2%, mixed foraging (12.5%, browsing (5.1%, and antagonism (1.1%. Over 2% of the total behavioral investment was spent on olfactory investigations (genital sniffing, sniffing proximity and flehmen. Eleven of the eighteen behaviors differed by class. Habitat selection differed strongly by each group, with Territorial males favoring mesic sites with greater vegetation abundance. Vigilance also differed according to habitat selection, but not group size. Animals in the xeric, least vegetation-rich area were far less vigilant than animals at more attractive sites. We found that the full repertoire of behaviors, and relative investments in each, differ according to social class. These findings are a reminder that researchers should make every effort to disambiguate social class among ungulates– and other taxa where behaviors are class-dependent.

Disrupted resting brain graph measures in individuals at high risk for alcoholism.

Science.gov (United States)

Holla, Bharath; Panda, Rajanikant; Venkatasubramanian, Ganesan; Biswal, Bharat; Bharath, Rose Dawn; Benegal, Vivek

2017-07-30

Familial susceptibility to alcoholism is likely to be linked to the externalizing diathesis seen in high-risk offspring from high-density alcohol use disorder (AUD) families. The present study aimed at comparing resting brain functional connectivity and their association with externalizing symptoms and alcoholism familial density in 40 substance-naive high-risk (HR) male offspring from high-density AUD families and 30 matched healthy low-risk (LR) males without a family history of substance dependence using graph theory-based network analysis. The HR subjects from high-density AUD families compared with LR, showed significantly reduced clustering, small-worldness, and local network efficiency. The frontoparietal, cingulo-opercular, sensorimotor and cerebellar networks exhibited significantly reduced functional segregation. These disruptions exhibited independent incremental value in predicting the externalizing symptoms over and above the demographic variables. The reduction of functional segregation in HR subjects was significant across both the younger and older age groups and was proportional to the family loading of AUDs. Detection and estimation of these developmentally relevant disruptions in small-world architecture at critical brain regions sub-serving cognitive, affective, and sensorimotor processes are vital for understanding the familial risk for early onset alcoholism as well as for understanding the pathophysiological mechanism of externalizing behaviors. Copyright © 2017 Elsevier Ireland Ltd. All rights reserved.

Effectiveness of group cognitive-behavioral therapy ‎on ‎symptoms of premenstrual syndrome (PMS ‎

Directory of Open Access Journals (Sweden)

Maryam Maddineshat

2016-02-01

Full Text Available Objective: Standards of care and treatment of premenstrual syndrome (PMS vary. Non-drug ‎psychosocial intervention therapy is recommended for women with any kind of ‎discomfort or distress caused by PMS. The current study examined the effectiveness of ‎group cognitive-behavioral therapy on the symptoms of PMS at a girls’ dormitory of ‎North Khorasan University of Medical Sciences.Method: In this quasi-experimental study, 32 female students with PMS who were majoring in ‎nursing and midwifery and residing in the dormitory were selected using the ‎convenience sampling method and were assigned to experimental and control groups. ‎The Standardized Premenstrual Symptoms Screening Tool was used as the research ‎tool. Eight sessions of cognitive-behavioral group therapy were held for the studentsResults: There was a significant difference in psychological symptoms before and after ‎cognitive-behavioral therapy (p=0.012. Furthermore, cognitive-behavioral therapy was ‎effective on social interferences caused by PMS symptoms (p=0.012.‎Conclusion: Group cognitive-behavioral therapy effectively alleviates PMS symptoms in female ‎college students.‎

Disruption of motor behavior and injury to the CNS induced by 3-thienylboronic acid in mice

Energy Technology Data Exchange (ETDEWEB)

Farfán-García, E.D.; Pérez-Rodríguez, M. [Academias de Fisiología Humana, Bioquímica y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Ciudad de México (Mexico); Espinosa-García, C. [Departamento de Biología de la Reproducción, Universidad Autónoma Metropolitana (UAM), 09310 Ciudad de México (Mexico); Castillo-Mendieta, N.T.; Maldonado-Castro, M.; Querejeta, E.; Trujillo-Ferrara, J.G. [Academias de Fisiología Humana, Bioquímica y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Ciudad de México (Mexico); and others

2016-09-15

The scarcity of studies on boron containing compounds (BCC) in the medicinal field is gradually being remedied. Efforts have been made to explore the effects of BCCs due to the properties that boron confers to molecules. Research has shown that the safety of some BCCs is similar to that found for boron-free compounds (judging from the acute toxicological evaluation). However, it has been observed that the administration of 3-thienylboronic acid (3TB) induced motor disruption in CD1 mice. In the current contribution we studied in deeper form the disruption of motor performance produced by the intraperitoneal administration of 3TB in mice from two strains (CD1 and C57BL6). Disruption of motor activity was dependent not only on the dose of 3TB administered, but also on the DMSO concentration in the vehicle. The ability of 3TB to enter the Central Nervous System (CNS) was evidenced by Raman spectroscopy as well as morphological effects on the CNS, such as loss of neurons yielding biased injury to the substantia nigra and striatum at doses ≥ 200 mg/kg, and involving granular cell damage at doses of 400 mg/kg but less injury in the motor cortex. Our work acquaints about the use of this compound in drug design, but the interesting profile as neurotoxic agent invite us to study it regarding the damage on the motor system. - Highlights: • Intraperitoneal 3-thienylboronic acid (3TB) induces tremor in CD1 or C57BL6 mice. • Injury on CNS as well as motor disruption is dose-dependent. • Damage is greater in basal ganglia than in cerebellum or motor cortex. • The DMSO as vehicle plays a key role in the induced effect. • Motor disruption seems to involve basal ganglia and cerebellum damage.

Disruption of motor behavior and injury to the CNS induced by 3-thienylboronic acid in mice

International Nuclear Information System (INIS)

Farfán-García, E.D.; Pérez-Rodríguez, M.; Espinosa-García, C.; Castillo-Mendieta, N.T.; Maldonado-Castro, M.; Querejeta, E.; Trujillo-Ferrara, J.G.

2016-01-01

The scarcity of studies on boron containing compounds (BCC) in the medicinal field is gradually being remedied. Efforts have been made to explore the effects of BCCs due to the properties that boron confers to molecules. Research has shown that the safety of some BCCs is similar to that found for boron-free compounds (judging from the acute toxicological evaluation). However, it has been observed that the administration of 3-thienylboronic acid (3TB) induced motor disruption in CD1 mice. In the current contribution we studied in deeper form the disruption of motor performance produced by the intraperitoneal administration of 3TB in mice from two strains (CD1 and C57BL6). Disruption of motor activity was dependent not only on the dose of 3TB administered, but also on the DMSO concentration in the vehicle. The ability of 3TB to enter the Central Nervous System (CNS) was evidenced by Raman spectroscopy as well as morphological effects on the CNS, such as loss of neurons yielding biased injury to the substantia nigra and striatum at doses ≥ 200 mg/kg, and involving granular cell damage at doses of 400 mg/kg but less injury in the motor cortex. Our work acquaints about the use of this compound in drug design, but the interesting profile as neurotoxic agent invite us to study it regarding the damage on the motor system. - Highlights: • Intraperitoneal 3-thienylboronic acid (3TB) induces tremor in CD1 or C57BL6 mice. • Injury on CNS as well as motor disruption is dose-dependent. • Damage is greater in basal ganglia than in cerebellum or motor cortex. • The DMSO as vehicle plays a key role in the induced effect. • Motor disruption seems to involve basal ganglia and cerebellum damage.

Natural and Professional Help during Marital Disruption.

Science.gov (United States)

Toro, Paul A.; Zax, Melvin

Although few people bring their psychological problems to mental health professionals, research in the area of 'natural' help is rudimentary. To investigate the process and effectiveness of natural professional groups in helping individuals experiencing marital disruption, 42 helpers (14 mental health professionals, 14 divorce lawyers, and 14…

BINARY DISRUPTION BY MASSIVE BLACK HOLES: HYPERVELOCITY STARS, S STARS, AND TIDAL DISRUPTION EVENTS

Energy Technology Data Exchange (ETDEWEB)

Bromley, Benjamin C. [Department of Physics and Astronomy, University of Utah, 115 S 1400 E, Rm 201, Salt Lake City, UT 84112 (United States); Kenyon, Scott J.; Geller, Margaret J.; Brown, Warren R., E-mail: bromley@physics.utah.edu, E-mail: skenyon@cfa.harvard.edu, E-mail: mgeller@cfa.harvard.edu, E-mail: wbrown@cfa.harvard.edu [Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 (United States)

2012-04-20

We examine whether disrupted binary stars can fuel black hole growth. In this mechanism, tidal disruption produces a single hypervelocity star (HVS) ejected at high velocity and a former companion star bound to the black hole. After a cluster of bound stars forms, orbital diffusion allows the black hole to accrete stars by tidal disruption at a rate comparable to the capture rate. In the Milky Way, HVSs and the S star cluster imply similar rates of 10{sup -5} to 10{sup -3} yr{sup -1} for binary disruption. These rates are consistent with estimates for the tidal disruption rate in nearby galaxies and imply significant black hole growth from disrupted binaries on 10 Gyr timescales.

Sleep and circadian rhythm disruption in social jetlag and mental illness.

Science.gov (United States)

Foster, Russell G; Peirson, Stuart N; Wulff, Katharina; Winnebeck, Eva; Vetter, Céline; Roenneberg, Till

2013-01-01

Sleep and wake represent two profoundly different states of physiology that arise within the brain from a complex interaction between multiple neural circuits and neurotransmitter systems. These neural networks are, in turn, adjusted by three key drivers that collectively determine the duration, quality, and efficiency of sleep. Two of these drivers are endogenous, namely, the circadian system and a homeostatic hourglass oscillator, while the third is exogenous-our societal structure (social time). In this chapter, we outline the neuroscience of sleep and highlight the links between sleep, mood, cognition, and mental health. We emphasize that the complexity of sleep/wake generation and regulation makes this behavioral cycle very vulnerable to disruption and then explore this concept by examining sleep and circadian rhythm disruption (SCRD) when the exogenous and endogenous drivers of sleep are in conflict. SCRD can be particularly severe when social timing forces an abnormal pattern of sleep and wake upon our endogenous sleep biology. SCRD is also very common in mental illness, and although well known, this association is poorly understood or treated. Recent studies suggest that the generation of sleep and mental health shares overlapping neural mechanisms such that defects in these endogenous pathways result in pathologies to both behaviors. The evidence for this association is examined in some detail. We conclude this review by suggesting that the emerging understanding of the neurobiology of sleep/wake behavior, and of the health consequences of sleep disruption, will provide new ways to decrease the conflict between biological and societal timing in both the healthy and individuals with mental illness. © 2013, Elsevier Inc. All Rights Reserved.

The Impact of Operating Room Layout on Circulating Nurse's Work Patterns and Flow Disruptions: A Behavioral Mapping Study.

Science.gov (United States)

Bayramzadeh, Sara; Joseph, Anjali; San, Dee; Khoshkenar, Amin; Taaffe, Kevin; Jafarifiroozabadi, Roxana; Neyens, David M

2018-01-01

To assess how the adjacencies of functionally different areas within operating rooms (ORs) can influence the circulating nurse's (CN) workflow patterns and disruptions. The CN plays a significant role in promoting patient safety during surgical procedures by observing, monitoring, and managing potential threats at and around the surgical field. Their work requires constant movement to different parts of the OR to support team members. The layout of the OR and crowded and cluttered environment might impact the CN's workflow and cause disruptions during the surgery. A convenience sample of 25 surgeries were video recorded and thematically coded for CN's activities, locations, and flow disruptions. The OR layout was categorized into transitional zones and functional zones (workstations, supply zones, support zones, and sterile areas around the surgical table). CN's activities were classified into patient-, equipment-, material-, and information-related activities. Flow disruptions included those related to environmental hazards and layout. The CN traveled through multiple zones during 91% of the activities. The CN's workstation acted as a main hub from which the CN made frequent trips to both sides of the surgical table, the foot of the OR table, supply zones, and support zones. Transitional zones accounted for 58.3% of all flow disruption that the CN was involved in whereas 28% occurred in areas surrounding the OR bed. The similarity of the movement and flow disruption patterns, despite variations in OR layout, highlighted the adjacencies required between major zones that CNs regularly visit. These optimum adjacencies should be considered while designing ORs such that they are more efficient and safer.

Statistical analysis of JET disruptions

International Nuclear Information System (INIS)

Tanga, A.; Johnson, M.F.

1991-07-01

In the operation of JET and of any tokamak many discharges are terminated by a major disruption. The disruptive termination of a discharge is usually an unwanted event which may cause damage to the structure of the vessel. In a reactor disruptions are potentially a very serious problem, hence the importance of studying them and devising methods to avoid disruptions. Statistical information has been collected about the disruptions which have occurred at JET over a long span of operations. The analysis is focused on the operational aspects of the disruptions rather than on the underlining physics. (Author)

Accounting for Heterogeneity in Hedging Behavior: Comparing & Evaluating Grouping Methods

NARCIS (Netherlands)

Pennings, J.M.E.; Garcia, P.; Irwin, S.H.

2011-01-01

Abstract Heterogeneity, i.e., the notion that individuals respond differently to economic stimuli, can have profound consequences for the interpretation of behavior and the formulation of agricultural policy. This paper compares and evaluates three grouping techniques that can be used to account for

Disruptions in DIII-D

International Nuclear Information System (INIS)

Reiman, A.; Taylor, P.; Kellman, A.; LaHaye, R.

1996-01-01

We report on the results of a statistical analysis of the DIII-D disruption data base, and on an examination of a selected subset of the shots to determine the likely causes of disruptions. The statistical analysis focuses on the dependence of the disruption rate on key dimensionless parameters. We find that the disruption frequency is high at modest values of the parameters, and that it can be relatively low at operational limits. For example, the disruption frequency in an ITER relevant regime (β N /l i ∼ 2, 3 G > 0.6, where n G is the Greenwald limit) is approximately 23%. For this range of q, the disruption frequency rises only modestly to about 35% at the β limit, consistent with previous observations of a soft β limit for this q regime. For the range 6 95 G G < .9) in all q regimes we have studied. The location of the minimum moves to higher density with increasing q

An Evaluation of a Behaviorally Based Social Skills Group for Individuals Diagnosed with Autism Spectrum Disorder.

Science.gov (United States)

Leaf, Justin B; Leaf, Jeremy A; Milne, Christine; Taubman, Mitchell; Oppenheim-Leaf, Misty; Torres, Norma; Townley-Cochran, Donna; Leaf, Ronald; McEachin, John; Yoder, Paul

2017-02-01

In this study we evaluated a social skills group which employed a progressive applied behavior analysis model for individuals diagnosed with autism spectrum disorder. A randomized control trial was utilized; eight participants were randomly assigned to a treatment group and seven participants were randomly assigned to a waitlist control group. The social skills group consisted of 32, 2 h sessions. Teachers implemented a variety of behaviorally based procedures. A blind evaluator measured participants' behavior immediately prior to intervention, immediately following intervention, and during 16 and 32-week maintenance probes. Results of the study demonstrated that participants made significant improvements with their social behavior (p < .001) following intervention, and the results were maintained up to 32 weeks after intervention had concluded.

Disruption model

International Nuclear Information System (INIS)

Murray, J.G.; Bronner, G.

1982-07-01

Calculations of disruption time and energy dissipation have been obtained by simulating the plasma as an electrical conducting loop that varies in resistivity, current density, major radius. The calculations provide results which are in good agreement with experimental observations. It is believed that this approach allows engineering designs for disruptions to be completed in large tokamaks such as INTOR or FED

Reduction of Risk Factors in Patients with Behavioral Dysphonia After Vocal Group Therapy.

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Silva, Wégina Jordâna Nascimento da; Lopes, Leonardo Wanderley; Macedo, Anny Elizabety Ramalho de; Costa, Denise Batista da; Almeida, Anna Alice Figueiredo de

2017-01-01

The origin and development of dysphonia, particularly behavioral dysphonia, is associated with several risk factors. Here, we verified the effectiveness of group therapy in reducing the risk factors, and established the association between risk factors and sex, age, profession, and diagnosis of laryngeal disorders in patients with behavioral dysphonia. This is a descriptive, quantitative, field intervention study. Participants (n = 26, adult patients of both sexes), with a diagnosis of behavioral dysphonia, received group therapy intervention. Data for risk factors were collected pre- and posttherapy using the Vocal Screening Protocol. The data were analyzed using descriptive and inferential statistics (Student t test, chi-squared test or Spearman correlation test). The majority (80.8%, n = 21) of patients were female, 65.4% (n = 17) were not in a vocal profession, and 42.3% (n = 11) presented with a lesion in the membranous portion of the vocal fold. The number of personal risk factors decreased after group therapy (P = 0.04). In addition, age was correlated with total (P = 0.001), environmental (P = 0.002), and personal (P = 0.003) vocal risk factors posttherapy. This study revealed an association between the reduction of personal risk factors and vocal group therapy, and a correlation between age and total, environmental, and personal vocal risk factors posttherapy. Thus, maintenance and origins of the behaviors that modify the behavioral aspects of the participants directly influence the production of individual vocal habits. Copyright © 2017 The Voice Foundation. Published by Elsevier Inc. All rights reserved.

Effects of an Interdependent Group Contingency on the Transition Behavior of Middle School Students with Emotional and Behavioral Disorders

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Hawkins, Renee O.; Haydon, Todd; McCoy, Dacia; Howard, Andrea

2017-01-01

An ABAB design was used to evaluate the effectiveness of an interdependent group contingency with randomized components to improve the transition behavior of middle school students identified with emotional and behavioral disorders (EBDs) served in an alternative educational setting. The intervention was implemented by one teacher with three…

Association Between Disruption of Fibrin Sheaths Using Percutaneous Transluminal Angioplasty Balloons and Late Onset of Central Venous Stenosis

International Nuclear Information System (INIS)

Ni, Nina; Mojibian, Hamid; Pollak, Jeffrey; Tal, Michael

2011-01-01

To compare the rates of central venous stenosis in patients undergoing hemodialysis who underwent disruption of fibrin sheath with percutaneous transluminal angioplasty balloons and those who underwent over-the-wire catheter exchange. This study is a retrospective review of 209 percutaneous transluminal angioplasty balloon disruption and 1304 over-the-wire catheter exchange procedures performed in 753 patients. Approval from the Human Investigations Committee was obtained for this study. Up to 10-year follow-up was performed. A χ 2 test was used to compare the rates of central venous stenosis after balloon disruption versus catheter exchange. A t-test was used to compare time to central venous stenosis development. Of the 753 patients in the study, 127 patients underwent balloon disruption of fibrin sheath and 626 had catheter exchange. Within the balloon disruption group, 18 (14.2%) of 127 patients subsequently developed central venous stenosis, compared with 44 (7.0%) of 626 in the catheter exchange group (P 2 test). Time to central venous stenosis development was approximately 3 years in both groups and not significantly different (1371 and 1010 days, P = 0.20). A total of 25.2% of patients in the balloon disruption group had four or more subsequent catheter exchanges, versus 12.6% in the catheter exchange group (P 2 test). In conclusions, there is a possible association between percutaneous transluminal angioplasty balloon disruption of fibrin sheath and late-onset central venous stenosis. Because venography was not routinely performed in catheter exchange patients, future randomized studies are necessary to confirm these findings.

Internal disruption in tokamaks

International Nuclear Information System (INIS)

Kuvshinov, B.N.; Savrukhin, P.V.

1990-01-01

A review of results of experimental and theoretical investigations of internal disruption in tokamaks is given. Specific features of various types of saw-tooth oscillations are described and their classification is performed. Theoretical models of the process of development of internal disruption instability are discussed. Effect of internal disruption on parameters of plasma, confined in tokamak, is considered. Scalings of period and amplitude of saw-tooth oscillations, as well as version radius are presented. Different methods for stabilizing instability of internal disruption are described

Internal disruptions in tokamaks

International Nuclear Information System (INIS)

Kuvshinov, B.N.; Savrukhin, P.V.

1990-01-01

Experimental and theoretical studies of the phenomenon of internal disruptions in tokamaks are reviewed. A classification scheme is introduced and the features of different types of sawtooth oscillations are described. A theoretical model for the development of the internal disruption instability is discussed. The effect of internal disruptions on the parameters of plasma confined in tokamaks is discussed. Scaling laws for the period and amplitude of sawtooth oscillations, as well as for the inversion radius, are presented. Different methods of stabilizing the internal disruption instability are described

Theoretically informed correlates of hepatitis B knowledge among four Asian groups: the health behavior framework.

Science.gov (United States)

Maxwell, Annette E; Stewart, Susan L; Glenn, Beth A; Wong, Weng Kee; Yasui, Yutaka; Chang, L Cindy; Taylor, Victoria M; Nguyen, Tung T; Chen, Moon S; Bastani, Roshan

2012-01-01

Few studies have examined theoretically informed constructs related to hepatitis B (HBV) testing, and comparisons across studies are challenging due to lack of uniformity in constructs assessed. The present analysis examined relationships among Health Behavior Framework factors across four Asian American groups to advance the development of theory-based interventions for HBV testing in at-risk populations. Data were collected from 2007-2010 as part of baseline surveys during four intervention trials promoting HBV testing among Vietnamese-, Hmong-, Korean- and Cambodian-Americans (n = 1,735). Health Behavior Framework constructs assessed included: awareness of HBV, knowledge of transmission routes, perceived susceptibility, perceived severity, doctor recommendation, stigma of HBV infection, and perceived efficacy of testing. Within each group we assessed associations between our intermediate outcome of knowledge of HBV transmission and other constructs, to assess the concurrent validity of our model and instruments. While the absolute levels for Health Behavior Framework factors varied across groups, relationships between knowledge and other factors were generally consistent. This suggests similarities rather than differences with respect to posited drivers of HBV-related behavior. Our findings indicate that Health Behavior Framework constructs are applicable to diverse ethnic groups and provide preliminary evidence for the construct validity of the Health Behavior Framework.

Individual Motivation, its Nature, Determinants and Consequences for Within Group Behavior.

OpenAIRE

Alkire, Sabina; Deneulin, Séverine

1999-01-01

The paper deals with evaluating the adequacy of the assumption that in economic transactions people are self-interested insofar as they are motivated solely by the concern of maximizing their own utility, and in particular with assessing how this assumption affects within-group behavior. Policy and incentive structures based on the assumption of exogenous and self-interested motivation can undermine other sources of motivation and have negative effects both on cooperative behavior and also on...

Disruption of the HPA-axis through corticosterone-release pellets induces robust depressive-like behavior and reduced BDNF levels in mice.

Science.gov (United States)

Demuyser, Thomas; Bentea, Eduard; Deneyer, Lauren; Albertini, Giulia; Massie, Ann; Smolders, Ilse

2016-07-28

The corticosterone mouse model is widely used in preclinical research towards a better understanding of mechanisms of major depression. One particular administration procedure is the subcutaneous implantation of corticosterone slow-release pellets. In this report we want to provide basic evidence, regarding behavioral changes, neurotransmitter and -modulator levels and some other relevant biomolecules after hypothalamic-pituitary-adrenal-axis distortion. We show that three weeks of corticosterone pellet exposure robustly induces depressive-like but not anxiety-like behavior in mice, accompanied by a significant decrease in hippocampal brain-derived neurotrophic factor levels, at five weeks after the start of treatment. Furthermore there is an overall decrease in plasma corticosterone levels after three weeks of treatment that lasts up until the five weeks' time point. On the other hand, no differences are observed in total monoamine, glutamate or d-serine levels, nor in glucocorticoid receptor expression, in various depression-related brain areas. Altogether this characterization delivers vital information, supplementary to existing literature, regarding the phenotyping of pellet-induced hypothalamic-pituitary-adrenal-axis disruption in mice following three weeks of continuous corticosterone exposure. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

[Undesired treatment effects in behavior group therapy: Frequency and spectrum].

Science.gov (United States)

Linden, M; Walter, M; Fritz, K; Muschalla, B

2015-11-01

Psychotherapy not only has positive but also negative effects, which is especially true for group psychotherapy due to psychodynamic and interactional processes. Using the UE-G questionnaire 71 patients who participated in cognitive behavioral group psychotherapy reported on negative experiences in the context of the group therapy. The answers were then validated in a qualitative interview. Of the patients 98.6% reported about at least one negative experience and 43.7% about severe or extremely severe negative experiences. Most prominent was the induction of hopelessness and demoralization by what patients saw and heard from other patients in the group. Burdensome and therefore undesired treatment effects are regularly seen in group psychotherapy, because of treatment or patient related factors. In any case they must be taken into account during treatment, in the training of group psychotherapists and in quality control.

Effects of Group Awareness and Self-Regulation Level on Online Learning Behaviors

Science.gov (United States)

Lin, Jian-Wei; Szu, Yu-Chin; Lai, Ching-Neng

2016-01-01

Group awareness can affect student online learning while self-regulation also can substantially influence student online learning. Although some studies identify that these two variables may partially determine learning behavior, few empirical studies or thorough analyses elucidate the simultaneous impact of these two variables (group awareness…

On the Effectiveness of Group Cognitive-Behavioral Therapy on Aggression in Addicts

Directory of Open Access Journals (Sweden)

mahmood najafy

2016-05-01

Full Text Available : This study aimed to investigate the effectiveness of group cognitive-behavioral therapy on aggression among addicts. Method: A quasi-experimental design along with pre-posttest stages, control group, and follow-up was employed for the conduct of this study. The number of 24 addicts referring to rehabilitation clinics in Tehran was selected as the sample size of this study via convenience sampling method in accordance with the inclusion criteria. These participants were randomly assigned to experimental and control groups. In this study, Buss-Perry Aggression Questionnaire was used for data collection purposes. Results: Data analysis showed that group cognitive-behavioral therapy reduces verbal and physical aggression, anger, and hostility in addicted people. However, this therapy only led to the reduction of verbal aggression, anger, and hostility in addicted people. Conclusion: Since aggression has a high comorbidity with substance abuse, this factor can be as an obstacle to withdrawal. Therefore, it must be considered in addiction treatment.

Symposium on disruptive instabilities at Garching

International Nuclear Information System (INIS)

Lackner, K.

1979-01-01

The phenomenon of disruptive instabilities was investigated with a special care at the IPP at Garching. After lectures and panel sessions it appears suitable, to subdivide the disruptive phenomena into four classes: 1. The internal disruption (the socalled saw-tooth oscillators). 2. the socalled reconnection disruptions. 3. The large disruptions. 4. The small disruptions. The four appearance forms of the phenomena are briefly explained. (GG) [de

Teachers' ratings of disruptive behaviors: the influence of halo effects.

Science.gov (United States)

Abikoff, H; Courtney, M; Pelham, W E; Koplewicz, H S

1993-10-01

This study evaluated the accuracy of teachers' ratings and examined whether these ratings are influenced by halo effects. One hundred thirty-nine elementary school teachers viewed videotapes of what they believed were children in regular fourth-grade classrooms. In fact, the children were actors who followed prepared scripts that depicted a child engaging in behaviors characteristic of an attention-deficit hyperactivity disorder (ADHD), an oppositional defiant disorder or a normal youngster. The findings provide support for a bias that was unidirectional in nature. Specifically, teachers rated hyperactive behaviors accurately when the child behaved like an ADHD youngster. However, ratings of hyperactivity and of ADHD symptomatic behaviors were spuriously inflated when behaviors associated with oppositional defiant disorder occurred. In contrast, teachers rated oppositional and conduct problem behaviors accurately, regardless of the presence of hyperactive behaviors. The implications of these findings regarding diagnostic practices and rating scale formats are discussed.

Promoting Behavioral Change in Psychoanalytic Treatments.

Science.gov (United States)

Busch, Fredric N

2017-01-01

One of the shibboleths of psychoanalysis is that treatment should not target behavioral change, focusing instead on gaining insight and the therapeutic relationship (Freud, 1917; 1923; Gabbard, 2014; Greenson, 1967). Such an approach is believed to be accompanied by disruptions of exploration or problematic distortions of the transference (Freud, 1917; 1923; Gabbard, 2014; Greenson, 1967). However, ignoring behavioral change can put patients at increased risk for stalemates in treatment and persistent problematic behaviors that interfere with improvement and impair relationships. This article suggests that rather than being at odds or disruptive, efforts at behavioral change can be part of the development and employment of a psychodynamic formulation, and can be used to enhance self-understanding and exploration of the transference. Psychoanalytic approaches provide strategies for behavioral change not included in other psychotherapeutic treatments. This article describes a variety of ways in which efforts at behavioral change can be integrated with and enhanced by psychodynamic exploration.

Organizational citizenship behavior and the quantity and quality of work group performance.

Science.gov (United States)

Podsakoff, P M; Ahearne, M; MacKenzie, S B

1997-04-01

Despite the widespread interest in the topic of organizational citizenship behaviors (OCBs), little empirical research has tested the fundamental assumption that these forms of behavior improve the effectiveness of work groups or organizations in which they are exhibited. In the present study, the effects of OCBs on the quantity and quality of the performance of 218 people working in 40 machine crews in a paper mill located in the Northeastern United States were examined. The results indicate that helping behavior and sportsmanship had significant effects on performance quantity and that helping behavior had a significant impact on performance quality. However, civic virtue had no effect on either performance measure.

Survey of disruption causes at JET