Peer Contagion in Interventions for Children and Adolescents: Moving Towards an Understanding of the Ecology and Dynamics of Change

The influence of deviant peers on youth behavior is of growing concern, both in naturally occurring peer interactions and in interventions that might inadvertently exacerbate deviant development. The focus of this special issue is on understanding the moderating and mediating variables that account for peer contagion effects in interventions for youth. This set of nine innovative papers moves the field forward on three fronts: (1) Broadening the empirical basis for understanding the conditions under which peer contagion is more or less likely (that is, moderators of effects); (2) Identifying mechanisms that might account for peer contagion effects (mediators); and (3) Forging the methodological rigor that is needed to study peer contagion effects within the context of intervention trials. We propose an ecological framework for disentangling the effects of individuals, group interactions, and program contexts in understanding peer contagion effects. Finally, we suggest methodological enhancements to study peer contagion in intervention trials.     

童年晚期同伴关系不利与儿童的攻击行为:自我概念与同伴信念的中介作用

采用整群抽样法选取1806名小学儿童(平均年龄11.27±0.36岁)为被试,考察同伴拒绝、侵害两种同伴关系不利与儿童攻击行为间的关系、以及儿童的自我概念与同伴信念在其中的中介作用.结果发现,(1)同伴拒绝、侵害与儿童的身体攻击、关系攻击显著正相关,与儿童的自我概念、同伴信念显著负相关,自我概念、同伴信念与两类攻击显著相关.(2)同伴拒绝、关系侵害对身体攻击和关系攻击具有正向预测作用;身体侵害仅对身体攻击具有正向预测作用,对关系攻击无显著影响.(3)儿童的身体自我概念、社交自我概念及同伴信念在同伴拒绝、同伴侵害与攻击的联系中具有中介作用.本研究结果表明,同伴拒绝对儿童的身体攻击、关系攻击主要表现为直接效应,不同类型的侵害经历与儿童攻击间的联系存在类型特定性.     

心理理论与同伴接纳

近年来的相关研究表明 ,心理理论能力的发展与儿童被同伴喜欢接纳的程度之间具有复杂的、双向作用的关系 ,二者的相关程度随着年龄增长有增强的趋势并且存在性别差异。对矛盾的和被忽视群体以及学龄儿童的研究也许有助于进一步理解二者间的关系。     

Effects of pairing aggressive and nonaggressive children in strategic peer affiliation

Examined the behavior of 118 second graders who participated in a 6-week summer school program that incorporated strategic peer affiliation (a buddy system). Moderately aggressive children (the targets of the intervention) were paired with nonaggressive peers throughout the program. All participants were observed playing foosball with their buddies and with aggressive and nonaggressive nonbuddies as teammates. Aggressive children had lower levels of disruptive behavior when their teammate was nonaggressive, regardless of whether the teammate was a buddy. Nonaggressive children showed elevated disruptive behavior when playing with an aggressive nonbuddy, but not when playing with an aggressive buddy. The highest level of aggressive behavior was seen in pairs of aggressive teammates who were friends. One year later, no increase in peer-rated aggressive behavior was found in either group. Results suggest that unidirectional peer influence is possible and that strategic peer affiliation can be an effective intervention that does not put nonaggressive children at risk for acquiring undesired behaviors.     

同伴排斥与青少年早期饮酒行为:同伴侵害和不良同伴的中介效应

采用同伴提名、同伴侵害问卷、不良同伴问卷和饮酒行为问卷调查广东地区4所普通初级中学1386名7年级学生,考察了同伴排斥与青少年早期饮酒行为的关系,以及同伴侵害和结交不良同伴在其中的链式中介效应。结果发现:(1)同伴排斥、同伴侵害和结交不良同伴均与青少年早期的饮酒行为呈显著正相关;(2)同伴侵害和结交不良同伴在同伴排斥影响青少年早期饮酒行为过程中的链式中介效应显著,即同伴排斥通过增加同伴侵害,从而提高结交不良同伴的风险,进而增加青少年早期的饮酒行为;(3)在控制同伴侵害和结交不良同伴后,同伴排斥对青少年早期的饮酒行为仍存在显著预测作用。     

Comparability of peer-assessment measures: A multitrait-multimethod and selection analytic approach

This research attempted to assess the relationship among the Pupil Evaluation Inventory (PEI), sociometric nominations, and sociometric ratings in terms of (1) a multitrait-multimethod analysis, (2) selection agreement indices of extreme individuals, and (3) stability over an 8-week period. Subjects were members of four second-grade classrooms at a regional school serving a diverse population of children. While stability estimates for measures were adequate and evidence for convergent validity was reasonably good, evidence for divergent validity was weaker. Selection agreement analyses yielded highly variable results, indicating that different samples of children tend to be selected by different instruments despite the similarity in dimensions being tapped. Methodological and theoretical implications of these findings are discussed.This work was based on the first author's M.S. thesis under the direction of the second author.     

童年中期对抗行为的发展及其与同伴拒绝、同伴接纳的关系

采用教师报告法对1254名城市儿童的对抗行为发展进行追踪研究,并采用交叉滞后设计探讨了对抗行为与同伴拒绝/接纳间的关系.结果发现:(1)童年中期,对抗行为呈中等程度稳定性,并表现出随年龄下降的趋势;(2)男生的对抗行为水平显著高于女生;(3)交叉滞后分析发现,早期的同伴拒绝能显著正向预测后期的对抗行为,但早期同伴接纳不能预测后期的对抗行为;早期的对抗行为均能够显著预测后期的同伴拒绝以及同伴接纳.     

Peer Rejection and Internalizing Behavior: The Mediating Role of Peer Victimization in Preschool

The author examined the relationship among peer rejection, peer victimization, and internalizing behaviors. The author hypothesized that physical and relational victimization would have a different indirect effect on the relationship between peer rejection and internalizing behaviors. Participants were 94 preschool children (37 girls; average age 49.97 months) from two university preschools located in the northern part of the United States. The results indicated that internalizing behaviors predicted the mediating variables only regarding relational victimization. Relational victimization indirectly affected the association between peer rejection and internalizing behaviors. The study provides evidence of the mediating effect of victimization behaviors on the relationship among peer rejection, victimization, and internalizing behaviors.     

EFFECTS OF COLLATERAL PEER SUPPORTIVE BEHAVIORS WITHIN THE CLASSWIDE PEER TUTORING PROGRAM

A classwide peer tutoring procedure was implemented in an urban elementary school classroom to improve students' spelling performance. Three students combined untrained or collateral tutoring behaviors with the core behaviors initially taught. To explore the function of these natural and spontaneous behaviors, a multielement single-subject experiment with replications was conducted. Results indicated that the additional tutoring behaviors increased (a) the academic response frequencies of 3 tutees and (b) the weekly spelling achievement of 1 target tutee. The remaining class members were successfully taught and continued to use these behaviors over the final 3 weeks of the school year. These findings are discussed with regard to academic instruction, natural communities of peer reinforcement, and the social validation of intervention procedures.     

Peer Interaction: What Causes What?

Peer interaction is examined as a source of behavior change in children and adolescents. The dynamics of peer influence are discussed in terms of six issues: characteristics of the influence source; characteristics of the child or adolescent being influenced; the relationship existing between influence source and the individual being influenced; developmental change; processes underlying peer influence; and constraints deriving from the behavior domain being examined. Research shows that contact with peers has complex effects on individual behavior, and numerous moderators and mediators must be considered in order to account for them. The discussion is linked to the papers included in this special issue.     

青少年早期社交淡漠对同伴关系的预测：学习成绩的调节作用

摘要：对787名小学4年级至初中二年级学生进行一学年的追踪研究,考察社交淡漠对其后同伴接纳、同伴欺侮的预测,以及学习成绩对上述预测关系的调节效应。结果表明：（1）前测社交淡漠可以负向预测后测的同伴接纳,正向预测后测的同伴欺侮;（2）前测学习成绩可以正向预测后测的同伴接纳,负向预测后测的同伴欺侮;（3）社交淡漠对同伴接纳、同伴欺侮的预测受学习成绩的调节,较高的学习成绩会弱化社交淡漠对同伴关系不良的预测效应。这一结果表明,学习成绩可能是一种重要的缓冲因素,可以在一定程度上保护社交淡漠的青少年免受同伴的消极对待。     

同伴关系的发展研究

同伴关系因其在个体心理社会适应中的重要作用而受到研究者的广泛重视。本文介绍了作者及其团队在同伴关系领域基于13年的"中美儿童同伴关系数据库"开展的长期研究工作,主要包括儿童同伴关系的影响因素及影响后效、同伴关系的追踪研究、同伴关系的中美比较和网络同伴关系等主题,较为全面地阐述了儿童同伴关系领域的现有研究基础,概括了儿童同伴关系的童年期特点、发展趋势及其文化差异,总结了对儿童同伴关系及其发展的主要指标研究得到的结论,并从网络交往、同伴关系的社会网络分析和个体中心的分析等视角指出了同伴关系领域后续研究的可行方向。     

童年中期同伴侵害影响孤独感的中介变量分析

为检验同伴侵害影响儿童孤独感的中介变量,采用同伴提名、儿童自我知觉量表、儿童孤独感量表和班级戏剧问卷对武汉市某小学3-6年级445名儿童进行了调查。结果发现：同伴接纳和整体自尊是同伴侵害与孤独感间的两个中介变量。 在考察单一变量的中介作用时,同伴接纳在儿童的同伴侵害与其孤独感间起完全中介作用,而整体自尊在儿童的同伴侵害与其孤独感间起部分中介作用;当同时考察同伴接纳与整体自尊的中介作用时,同伴接纳与整体自尊在同伴侵害与孤独感间起完全中介作用,而且,由于同伴接纳对整体自尊的正向预测作用,同伴侵害对整体自尊的预测关系不显著。     

Development of the Multidimensional Peer Victimization Scale–Revised (MPVS-R) and the Multidimensional Peer Bullying Scale (MPVS-RB)

Peer victimization is a frequent occurrence for many adolescents; however, some of the psychometric properties of self-report scales assessing these experiences remain unclear. Furthermore, with an increase in access to technology, electronic aggression should also be considered. The authors examined the psychometric properties of the Multidimensional Peer Victimization Scale (MPVS; Mynard & Joseph, 2000), and developed versions to include the assessment of electronic aggression according to whether the adolescent was the target or perpetrator of peer victimization. A total of 371 (191 girls and 180 boys; M_age = 13 years 4 months, SD_age = 1 year 2 months) adolescents in the United Kingdom completed the MPVS including five newly developed items assessing electronic aggression, a version of the MPVS designed to assess victimization perpetration, and a measure of self-esteem. Confirmatory factor analyses yielded a five-factor structure comprising: Physical, social manipulation, verbal, attacks on property, and electronic for both scales. Convergent validity was established through negative associations between the victimization scales and self-esteem. Sex differences also emerged. One revised scale and one new scale are subsequently proposed: The MPVS–Revised and the Multidimensional Peer Bullying Scale.     

青少年儿童不爱社交、同伴排斥和同伴侵害的交叉滞后分析

本研究采用班级戏剧和同伴提名对初中一年级766名学生进行了3年的追踪研究,采用交叉滞后设计,考察同伴排斥、同伴侵害和不爱社交之间的相互预测关系。结果表明：（1）不爱社交、同伴排斥和同伴侵害都表现出较高程度的稳定性;（2）早期同伴排斥可以预测随后的同伴侵害,早期同伴侵害也可以预测随后的同伴排斥,但这两种作用模式都受到性别的调节;（3）从总体上来说,早期同伴侵害影响个体随后的不爱社交倾向,但这种关系模式受到性别的调节。对女生来说,初一的同伴侵害影响初二的不爱社交;对男生来说,早期同伴侵害对随后的不爱社交没有显著的预测作用。本研究结果表明,同伴侵害不仅对同伴排斥产生较大的影响,同时可能导致女生对社会交往变得越来越冷漠,对人际关系产生长期影响。     

Friendship as a moderator of the relationship between social skills problems and peer victimisation

Previous research, primarily in North America, has found that individual factors (e.g., ‘internalising problems’) and social factors (e.g., friendship) interact to influence children's levels of peer victimisation. Some research has found that the identity of children's friends and friendship quality (as ‘protective factors’) are more important than the sheer number of friends. However, studies have produced conflicting findings. A peer nomination inventory was used to assess social skills problems, peer victimisation, peer acceptance, and several different aspects of friendship. Four hundred and forty‐nine children aged 9 to 11 years completed the inventory at two time points over the course of an academic year. Social skills problems were found to predict an increase in peer victimisation over time. Two friendship variables were found to moderate this relationship: a) number of friends, and b) the peer acceptance of the very best‐friend. The relationship was found to be weaker for those children with lots of friends and for those children with a ‘popular’ best‐friend. The findings advance understanding of the factors that promote peer victimisation. Aggr. Behav. 32:110–121, 2006. © 2006 Wiley‐Liss, Inc.     

Assessing Peer-Related Impairments Linked to Adolescent Social Anxiety: Strategic Selection of Informants Optimizes Prediction of Clinically Relevant Domains

Socially anxious adolescents commonly experience impaired interpersonal functioning with unfamiliar, same-age peers. Yet, we lack short screening tools for assessing peer-related impairments. Recent work revealed that a parent-reported, three-item screening tool produced scores that uniquely related to social anxiety concerns. However, this tool ought to go beyond linking impairments to service needs (i.e., social anxiety symptoms). This tool should also inform the goals of services, in particular by linking impairments to key domains relevant to therapeutically addressing adolescents’ anxiety-related needs, such as social skills when interacting with unfamiliar peers. This requires an assessment approach that involves strategic selection of informants who vary in their expertise for observing anxiety-related needs, as well as the therapeutic goals for addressing anxiety-related impairments (e.g., social skills within peer interactions). We leveraged parents’ reports to link impairments to social anxiety-related needs. To link impairments to social skills, we leveraged informants (i.e., unfamiliar untrained observers [UUOs]) who observed adolescents within tasks designed to simulate interactions with same-age, unfamiliar peers. We tested this approach using a mixed-clinical/community sample of 134 adolescents, ages 14- to 15 years old. We leveraged multi-informant survey reports to assess adolescent social anxiety, and trained independent observers rated adolescents’ social skills within unfamiliar peer interactions. Parents’ reports performed best when distinguishing adolescents on referral status and predicting survey-reported social anxiety, whereas only UUOs’ reports predicted independent observers’ social skills ratings. These findings inform the strategic selection of informants for assessing impairments that commonly prompt the need for adolescents to access mental health services for social anxiety.