According to the failure model (Patterson & Capaldi, 1990), peer rejection is the intermediary link between problem behaviors and internalizing symptoms. The present study tested the model with 464 monozygotic and same-sex dizygotic twin pairs (234 female, 230 male dyads). Teacher-reported reactive aggression and internalizing symptoms, and…

Defending peers who have been bullied is often thought to put defenders at risk of becoming victimized themselves. The study investigated the concurrent and prospective associations between defending and (peer- and self-reported) victimization, and examined popularity and classroom norms as potential moderators. Participants included 4085 Finnish…

Existing literature has mostly explained the occurrence of bullying victimization by individual socioemotional maladjustment. Instead, this study tested the person-group dissimilarity model (Wright et al., "Journal of Personality and Social Psychology," 50: 523-536, 1986) by examining whether individuals' deviation from developmentally…

Research shows that peer relationships are associated with students' school adjustment. However, the importance of advantageous and disadvantageous factors for students' educational outcomes may vary by socioeconomic positioning. Drawing on sociometric and register data from a nationally representative sample of Swedish youth (n = 4996, girls 50%;…

This study examined the coevolution of prosocial and aggressive popularity norms with popularity hierarchy (asymmetries in students' popularity). Cross-lagged-panel analyses were conducted on 2,843 secondary school students (N[subscript classrooms] = 120; M[subscript age] = 13.18; 51.3% girls). Popularity hierarchy predicted relative change in…

The present longitudinal study examined how and why classroom-level victimization moderates the prospective association between peer victimization and depressive symptoms with 2,643 third- and fourth-graders (M[subscript age] = 10.01 years) in China. Multilevel modeling revealed that peer victimization was more strongly associated with increasing…

The "Developing Inclusive Youth" program is a classroom-based, individually administered video tool that depicts peer-based social and racial exclusion, combined with teacher-led discussions. A multisite randomized control trial was implemented with 983 participants (502 females; 58.5% White, 41.5% Ethnic/racial minority; M[subscript…

Extracurricular groups can promote healthy development, yet the literature has given limited attention to indirect associations between extracurricular involvement and mental health or to sexual and gender minority youth. Among 580 youth (M[subscript age] = 15.59, range = 10-20 years) and adult advisors in 38 Gender-Sexuality Alliances (GSAs),…

In this study, the associations between peer effects and academic functioning in middle adolescence (N = 342; 14-15 years old; 48% male) were investigated longitudinally. Similarity in achievement (grade point averages) and unexplained absences (truancy) was explained by both peer selection and peer influence, net of acceptance, and connectedness.…

The present study investigated the role of teacher-rated likeability as a mediator of the relation between low academic competence and depressive symptoms in elementary-aged children. Analyses focused on a sample of children at risk for child maltreatment living in Hawaii (n = 380). Structural equation modeling supported the hypothesized negative…

A multimethod, multi-informant design was used to examine links among sociodemographic risk, family adversity, parenting quality, and child adjustment in families experiencing homelessness. Participants were 245 homeless parents (M[subscript age] = 31.0, 63.6% African American) and their 4- to 6-year-old children (48.6% male). Path analyses…

It has been argued that children who possess an advanced theory of mind (ToM) are viewed positively by their peers, but the empirical findings are mixed. This meta-analysis of 20 studies including 2,096 children (aged from 2 years, 8 months to 10 years) revealed a significant overall association (r = 0.19) indicating that children with higher ToM…

This study examined how peer relationships (i.e., sociometric and perceived popularity) and teacher--child relationships (i.e., support and conflict) impact one another throughout late childhood. The sample included 586 children (46% boys), followed annually from Grades 4 to 6 (Mage.wave1 = 9.26 years). Autoregressive cross-lagged modeling was…

Adolescents' perceptions of peers' relational characteristics (e.g., support, trustworthiness) were examined for subtypes of youth who evidenced chronic maladaptive behavior, chronic peer group rejection, or combinations of these risk factors. Growth mixture modeling was used to identify subgroups of participants within a normative…

This study aimed to understand how relationships with peers and teachers contribute to the development of internalizing problems via children's social self-concept. The sample included 570 children aged 7 years 5 months (SD = 4.6 months). Peer nominations of peer rejection, child-reported social self-concept, and teacher-reported…