Peer Influence in Children and Adolescents: Crossing the Bridge from Developmental to Intervention Science

Considerable evidence supports the hypothesis that peer relationships influence the growth of problem behavior in youth. Developmental research consistently documents the high levels of covariation between peer and youth deviance, even controlling for selection effects. Ironically, the most common public interventions for deviant youth involve segregation from mainstream peers and aggregation into settings with other deviant youth. Developmental research on peer influence suggests that desired positive effects of group interventions in education, mental health, juvenile justice, and community programming may be offset by deviant peer influences in these settings. Given the public health policy issues raised by these findings, there is a need to better understand the conditions under which these peer contagion effects are most pronounced with respect to intervention foci and context, the childs developmental level, and specific strategies for managing youth behavior in groups.     

Proximal Peer-Level Effects of a Small-Group Selected Prevention on Aggression in Elementary School Children: An Investigation of the Peer Contagion Hypothesis

Examined peer contagion in small group, selected prevention programming over one school year. Participants were boys and girls in grades 3 (46 groups, 285 students) and 6 (36 groups, 219 students) attending school in low-resource, inner city communities or moderate resource urban communities. Three-level hierarchical linear modeling (observations within individuals within groups) indicated that individual change in aggression over time related to the average aggression of others in the intervention group. The individual child was pulled toward peers mean level of aggression; so the intervention appeared to reduce aggression for those high on aggression, and to make those low on aggression more aggressive. Effects appeared to be magnified in either direction when the child was more discrepant from his or her peers. From these results we derive a principle of discrepancy-proportional peer-influence for small group intervention, and discuss the implications of this for aggregating aggressive children in small group programs.     

The Relationship Between Peer Status and Depressive Symptoms in Children and Adolescents

The purpose of this study was to examine the relationship between specific symptoms of depression and particular styles of peer difficulties. Participants were 1687 students in fourth, sixth, seventh, eighth, ninth, and eleventh grades from a midsized Midwestern city. Based on previous studies, it was hypothesized that rejected and neglected youths would report greater depressive symptomatology than other peers. In addition, aggressive-rejected youth were predicted to report more Interpersonal Problems while submissive-rejected youths were expected to report more Anhedonia. There were no sociometric group differences on global scores of depression as measured by the Children's Depression Inventory; however, the aggressive- and submissive-rejected youths did report specific differences. Aggressive-rejected youths reported more Interpersonal Problems and feelings of Ineffectiveness, while the neglected and submissive-rejected youths reported more Anhedonia. Taken together, such differences provide support for differentiating among types of rejected students and suggest that different interventions may be necessary to address the needs of these youths.     

The Relationship of the Family Social Environment,Peer Influences,and Peer Relationships to Altruistic Orientation in Chinese Children

This study investigated the correlation between the family social environment, peer influences, and peer relationships to altruistic orientation in Chinese children. Results in the present study showed that (a) altruistic orientation measured by the Child Altruism Inventory (H. K. Ma & M. C. Leung, 1991) was directly associated with a positive family social environment, (b) altruistic orientation was directly associated with positive peer influences and was inversely associated with negative peer influences, and (c) altruistic orientation was directly associated with perceived prosocial behavior of one's best friend and inversely associated with perceived antisocial behavior of one's best friend. The findings suggested that a good family social environment, positive peer influences, and good peer relationships tended to increase altruistic orientation.     

Exposure to Externalizing Peers in Early Childhood: Homophily and Peer Contagion Processes

Guided by a transactional model, we examined the predictors and effects of exposure to externalizing peers in a low-risk sample of preschoolers and kindergarteners. On the basis of daily observations of peer interactions, we calculated measures of total exposure to externalizing peers and measures of exposure to same- and other-sex externalizing peers. Analyses of predictors of externalizing peer exposure supported a homophily hypothesis for girls. Tests of peer contagion effects varied by sex, and exposure to externalizing peers predicted multiple problem behaviors for girls but not for boys. Sex differences were a function of childrens own sex, but not of peers sex. The study provides evidence of externalizing peer exposure effects in a low-risk sample of young children, notably for girls.Contributed equally to the conceptualization of this project     

Deviant Peer Affiliation and Problem Behavior: A Test of Genetic and Environmental Influences

This study uses a multitrait, multimethod (MTMM) approach to investigate the genetic and environmental etiologies of childhood deviant peer affiliation (DPA) and problem behavior (PROB). The variability of genetic and environmental estimates by agent and method is also examined. A total of 77 monozygotic and 72 dizygotic twin pairs and each twin's close friend were assessed. The informants included parents, teachers, and twins, and the methods involved questionnaire reports and coder ratings of videotaped dyadic interactions between each twin and their close friend. Twin intraclass correlations and univariate models attributed DPA and PROB to genetic, and shared and nonshared environmental effects. Parameter estimates differed by rater and method, however. Results accentuate the imperative to attend to method effects inherent in MTMM behavioral geneticresearch.     

A Mediated-Moderation Model of Maternal Parenting Style,Association with Deviant Peers,and Problem Behaviors in Urban African American and European American Adolescents

We examined a model positing that association with deviant peers mediates the relation between perceived maternal parenting style, represented by the dimensions demandingness, responsiveness, and their interaction, and problem behaviors in an urban sample of 82 African American and 56 European American young adolescents. Regression analyses revealed that the data are consistent with a model where association with deviant peers mediates the relation between maternal responsiveness and problem behaviors for European Americans and African American males. In addition, a responsiveness by demandingness interaction was found for European Americans. Only the relation between association with deviant peers and problem behaviors was supported for African American females. The results suggest that ethnic and gender variables might interact with pathways from parenting to association with deviant peers and problem behaviors and that the dimensions of parenting might not be equal in their salience.     

Social-Cognitive Moderators of the Relationship between Peer Victimization and Suicidal Ideation among Psychiatrically Hospitalized Adolescents

Peer victimization among children and adolescents is a major public health concern, given its widespread individual and societal ramifications. Victims of peer aggression often face significant levels of psychological distress and social difficulties, such as depression, suicidal ideation, suicide attempts, and social rejection. The purpose of this study was to examine whether cognitive distortions and perceptions of social support moderate the association between peer victimization and suicidal thoughts among psychiatrically hospitalized adolescents. Participants included 183 psychiatrically hospitalized adolescents (ages 13 to 18). In multiple regression analyses that controlled for gender, social and cognitive factors served as significant resource factors. Cognitive factors also moderated the relationship between peer victimization and suicidal ideation.     

Pitfalls of the Peer World: How Children Cope with Common Rejection Experiences

This study examines the reliability and validity of a newly developed self-report measure designed to assess children's coping strategies in response to everyday rejection experiences. The Survey for Coping with Rejection Experiences (SCORE) was administered to 225 children and factor analysis of responses resulted in the conceptually meaningful subscales of active, aggressive, denial, and ruminative coping. A subset of 95 children also completed a battery of self- (depression, social anxiety), parent- (internalizing and externalizing problems), and peer- (social preference, aggression, withdrawal) ratings of socioemotional adjustment. Children's coping strategies were meaningfully associated with adjustment measures, although these associations differed for boys and girls in several instances. Importantly, both aggressive and ruminative coping strategies were positively associated with internalizing problems even after controlling for the effect of children's actual sociometric status. In addition, denial coping emerged as a significant moderator of the relation between status and adjustment.     

学习障碍儿童情绪理解与同伴接受性*及社会行为的关系

该研究以90名学习障碍儿童为研究对象,探讨学习障碍儿童情绪理解与同伴接受性和社会行为的关系,比较情绪理解不同成分对同伴接受性和社会行为的影响作用。研究发现情绪理解不同成分对学习障碍儿童同伴接受性和社会行为具有不同程度的影响,具体表现为:1)基本情绪识别和自我意识情绪识别是学习障碍儿童同伴接受性的最佳预测变量;2)自我意识情绪识别和表情识别是学习障碍儿童问题行为的最佳预测变量;3)自我意识情绪识别、情绪内部原因理解、情绪隐藏理解、情绪改变理解和情绪外部原因理解是学习障碍儿童社会能力的最佳预测变量。     

同伴团体对儿童青少年学业成就和社会功能关系的影响

运用同伴评价、教师评估和学校记录等多种渠道收集关于同伴团体、社会功能、同伴接纳以及学业成就的资料,旨在考察同伴团体与儿童青少年学业成就和社会功能的关系。研究发现：绝大多数儿童青少年都有自己的同伴团体。这些同伴团体在学业成就上有很高的同质性。学业成就与社会适应无论在团体内的个体水平还是在团体水平上都密切相关。而且,团体的学业表现是个体学业成就和社会适应间的重要调节因素,表明团体学业规范对个体水平上学业成就与社会功能的关系有增强或是减弱的作用。这项研究再一次证明同伴团体在儿童个体发展中的重要意义。     

Adult Influence on the Participation of Peers Without Disabilities in Peer Support Programs

Three peers without disabilities who volunteered to serve as peer supports and were identified by general education teachers as having academic difficulties were studied across three conditions. In baseline, a peer without disabilities worked alone, while the student with severe disabilities was supervised by an adult. In the Peer Support condition, peers without disabilities worked with the student with severe disabilities, and both individuals were supervised by an adult. In the Adult Involvement condition, peers without disabilities were supervised by an adult as in the Peer Support condition, but peers worked separately from the student with severe disabilities. Dependent measures included the active engagement of peers without disabilities and students with severe disabilities, and social interactions between students and peers. Our data indicate that the Peer Support and Adult Involvement conditions resulted in higher, but similar, levels of active engagement for two of three peers without disabilities when compared to baseline. For the third peer, high levels of active engagement occurred across all conditions. Active engagement varied across students with severe disabilities, but was typically highest in conditions where peers without disabilities were involved. For all students with severe disabilities, social interactions were more frequent and longer in the Peer Support condition.     

Transitioning Out of Peer Victimization in School Children: Gender and Behavioral Characteristics

The present study investigated the characteristics of children who remain consistently peer victimized in comparison to those who transition out of victimization status. The relationships between victimization and the victim's level of overt aggression, relational aggression, impulsivity, and prosocial behaviors were examined from one year to the next. At Time 1, 1589 3rd, 4th, and 5th-grade children were administered a peer nomination instrument assessing victimization and standard sociometric variables. At Time 2 (1 year later), 1619 3rd, 4th, and 5th-grade children were administered the same measure. A mixed-design repeated measures MANOVA was conducted for boys and girls separately. Results indicated that in comparison to victims transitioning out of victimization status, consistently victimized boys were lower in prosocial behavior, and consistently victimized girls were higher in impulsivity. Results for girls also indicated that a reduction in victim's own level of relational aggression was associated with cessation of victimization.     

Peer Influence in Elementary School: The Importance of Assessing the Likeability of Popular Children

Abstract

We examined the degree to which children perceive influence behaviors and influence over social norms from different types of high-status children to vary in a sample of 453 3^rd through 5^th grade children. Using a cluster analysis of peer-nominated popularity and likeability measures, we identified a seven-cluster solution, including three high-status clusters: Well-Liked, Popular, and Popular/Well-Liked. Popular children were perceived as using ridicule and having influence over misbehavior. Popular/Well-Liked children were perceived as using playful teasing and modeling and influencing over trend-setting and sports norms, at a degree similar to Popular children. However, Popular/Well-Liked children were not perceived as using ridicule or influencing over misbehavior; rather, they scored higher than all other status groups for prosocial assertion and academic motivation. Well-Liked children were perceived as using prosocial assertion and influencing over academic motivation at a higher degree than Average children but at a lower degree than Popular or Popular/Well-Liked children. Although the influence associated with likeability alone appeared relatively limited, likeability in conjunction with popularity seems to make a difference regarding influence behaviors and norms. A person-centered approach that takes into account multiple facets of social status is likely to enhance understanding of high-status children’s influence on their same-age peers.     

Interventions to Address the Academic Impairment of Children and Adolescents with ADHD

There exists a strong link between ADHD and academic underachievement. Both the core behavioral symptoms of ADHD and associated executive functioning deficits likely contribute to academic impairment. Current evidence-based approaches to the treatment of ADHD (i.e., stimulant medication, clinical behavior therapy and classroom behavioral interventions) have demonstrated a robust impact on behavioral variables such as attention and disruptive behavior within classroom analogue settings; however, their efficacy in improving academic outcomes is much less clear. Although surprisingly few treatment outcome studies of ADHD have attempted to incorporate interventions that specifically target academic outcomes, the studies that are available suggest that these interventions may be beneficial. The state of the treatment literature for addressing academic impairment in children and adolescents with ADHD will be reviewed herein, as well as limitations of current research, and directions for future research.     

Linking Peer Victimization to the Development of Depressive Self-Schemas in Children and Adolescents

Previous theory and research suggest that childhood experiences are more likely to generate depressive self-schemas when they focus attention on negative information about oneself, generate strong negative affect, and are repetitive or chronic. Persistent peer victimization meets these criteria. In the current study, 214 youths (112 females) with empirically-validated histories of high or low peer victimization completed self-report measures of negative and positive self-cognitions as well as incidental recall and recognition tests following a self-referent encoding task. Results supported the hypothesis that depressive self-schemas are associated with peer victimization. Specifically, peer victimization was associated with stronger negative self-cognitions, weaker positive self-cognitions, and an elimination of the normative memorial bias for recall of positive self-referential words. Effects were stronger for relational and verbal victimization compared to physical victimization. Support accrues to a model about the social-developmental origins of cognitive diatheses for depression.     

Deviant Peer Affiliation and Bullying Perpetration in Adolescents: The Mediating Role of Moral Disengagement and the Moderating Role of Moral Identity

Abstract

Based on the integration of the group socialization theory and the individual–context interaction model, we examined whether moral disengagement mediated the association between deviant peer affiliation and bullying perpetration and whether this mediation model was moderated by moral identity. A total of 438 adolescents participated in the current study. They completed measures regarding deviant peer affiliation, bullying perpetration, moral disengagement, and moral identity. Deviant peer affiliation positively predicted adolescents’ bullying perpetration at six months later and this relationship was partially mediated by moral disengagement. Moral identity did not moderate the direct relationship between deviant peer affiliation and adolescents’ bullying perpetration. Moral identity moderated the relationship between moral disengagement and adolescents’ bullying perpetration and in turn moderated the indirect relationship between deviant peer affiliation and bullying perpetration. Specifically, the relationship between moral disengagement and bullying perpetration and the indirect relationship between deviant peer affiliation and bullying perpetration via moral disengagement both became nonsignificant for adolescents with high moral identity.     

Predictors of the Peer Acceptance of Children with Diabetes: Social Behavior and Disease Severity

Objective. Investigated illness severity (medical control, disease impact, obviousness) and social behavior style as predictors of the peer acceptance of children with diabetes. Method. Sixty-five children (10–12.5 years old) with diabetes and their parents, teachers, and physicians participated. Physician ratings and laboratory tests indicated medical control. Parents and children reported disease impact and teachers rated disease obviousness. Children and teachers rated social behavior. Teachers reported peer acceptance. Results. Consistent with hypotheses, favorable social behavior positively predicted acceptance and disease impact negatively predicted acceptance; medical control did not relate to acceptance. Disease obviousness and social behavior interacted to predict acceptance. Children with more obvious disease were not stigmatized by unfavorable social behavior. Conclusions. Aspects of disease severity and social behavior influence peer acceptance and may be appropriate predictors and targets for remediation of peer problems.     

Moving Beyond Computational Cognitivism: Understanding Intentionality,Intersubjectivity and Ecology of Mind

The emergence of the Cognitive Sciences, in the middle of the 20th Century, was initially based on an abstract model of the mind: the computer metaphor. The human mind was understood in analogy to the digital computer, as a rule-based, symbol processor. As a consequence, the human being was envisioned as logically-rationally guided, radically disembodied and isolated from culture. Over the last few decades, several disciplines, such as Biology, Mathematics, Philosophy, Psychology and Neuroscience, have begun to address the study of intentionality, intersubjectivity and natural cognition. Searching for a better understanding of these complex issues, a number of approaches have been developed with the promise of capturing the specific qualities of human cognition, radically omitted from a computationalist view of mind. Nevertheless, since these research programs are rather recent, concrete methodological designs and empirical approaches in the form of experimentally testable hypotheses are still scarce. This special issue brings together several perspectives in order to propose alternative research approaches in the topics of Intentionality, Intersubjectivity and Ecology of Mind. We believe it is necessary to discuss and advance towards explicit empirical frames in the form of actual experiments, specific predictions and formal models. The essays presented here constitute an attempt to move in this direction, with the specific aim of reconsidering the study of some forgotten properties of brain and mind.