Previous research has shown that adolescent peer groups play a role in maintaining and exacerbating demographic differences in achievement. However, there is still limited knowledge about the malleable factors that contribute to these achievement disparities. This short-term longitudinal study examined one such malleable factor--namely, perceived…

As a test of the poor-get-poorer hypothesis, which shows that socially anxious teens are less likely to communicate online and in turn feel less closeness to friends, this study explored whether peer victimization is similarly related to social media involvement. High-school participants (n = 307, M[subscript age] = 15.91) reported about their…

This study investigated how two aspects of the classroom environment (teachers' emphasis on mastery goals and descriptive norms (i.e., the average student disruptive, prosocial, and achievement-related behavior in a classroom), moderated the relationship between student behaviors and coolness. The sample included 976 students nested in 54 fifth-…

Numerous studies consider competition and jealousy within an evolutionary framework, yet less is known about the relation between aggression vis-à-vis hypercompetitiveness (i.e., competing to win) and jealousy. We investigated the longitudinal relations between hypercompetitiveness, jealousy, and aggression and the moderating role of gender in a…

We use social learning, self-control, and social disorganization theories to develop hypotheses related to tobacco and alcohol use among a racially diverse sample of Chicago adolescents. Data from the Project on Human Development in Chicago Neighborhoods were used to test models that examine relationships between neighborhood-level and…

Popularity and likability--two measures of adolescent peer status--have been examined frequently within Western cultures but relatively rarely within Eastern cultures. This study offered a cross-cultural comparison of adolescent peer status to examine whether these constructs and their correlates vary between the United States and China. The study…

Despite ample research on the role of parental autonomy support in adolescents' adjustment, the affective processes underlying parental autonomy support remain relatively unclear. As an initial step to fill this gap, the current research examined whether the association between parental autonomy support and adolescents' school adjustment was in…

In this study, the effects of peer acceptance and rejection on global self-esteem and emotional school engagement in adolescents were investigated. Moreover, in line with the differential susceptibility hypothesis, we examined the potential moderating effect of a polymorphism in the serotonin receptor gene (i.e., 5-HTTLPR). The sample consisted of…

Despite our wealth of knowledge regarding theory of mind (ToM) development in preschool, less is known about development and the processes that support ToM into middle childhood. The current study examined potential cognitive (i.e., executive function, verbal intelligence, and nonverbal intelligence) and social (i.e., socioeconomic status,…

Using participants from an 1-and-1/2-year longitudinal study of smoking socialization (N = 709), we examined peer smoking, and implicit and explicit attitudes on smoking initiation among initial nonsmoking adolescents. We also tested whether implicit and explicit attitudes mediated the effect of peer smoking on smoking initiation, and whether…

This study examined the association between ethnicity-related context variables and the prosocial behavior of early adolescents in ethnically/racially diverse schools. Specifically, youths' perceptions of greater representation of same-ethnic peers at school, school support for ethnic diversity, and engagement in and valuing cross-ethnic contact…

The present study investigated the longitudinal association between the development of bullying (traditional bullying and cyberbullying) and the development of moral deficiencies (moral disengagement, low moral responsibility, and weak feelings of remorse) during adolescence. A total of 960 Swiss adolescents completed an electronic questionnaire…

This study investigated the relationships between three psychopathic dimensions (callousness/unemotionality, grandiosity/manipulation, and impulsivity/irresponsibility) and reactive and instrumental aggression in a community sample of early adolescents (N = 243, age M = 12.29, SD = 1.18). The moderating role of moral disengagement (MD) was also…

The objectives of this longitudinal study were to predict the tobacco and alcohol use of Indonesian Muslim adolescents from their religiosity and the substance use of friends and network affiliates. At Year 1, there were 996 participants from eighth grade (n = 507, age = 13.4 years) and 10th grade (n = 489, age = 15.4); 875 were followed into the…

In this study on being ignored by peers, 934 twelfth-grade students reported on their experiences of being ignored, victimized, and socially withdrawn, and completed measures of friendship and psychological adjustment (depression, self-esteem, and global satisfaction). Peer nominations of being ignored, victimized, and accepted by peers were also…