The well-known associations of peer status (acceptance and rejection) with prosocial and aggressive behaviors have mostly relied on peer status measures assessed at a single time point. This study adopted a person-oriented approach to examine longitudinal links between stable peer status profiles assessed at two time points and prosocial and…

The goal of this study was to examine how individual differences in physiological arousal and reactivity moderated the relation between peer victimization and reactive and proactive aggression. Participants were 58 adolescents (61.2% boys; 54.9% African American) in the age range of 12--15. Participants self-reported peer victimization, reactive…

This study examined the reciprocal associations between sleep (duration and quality) and aggressive behavior in toddlers. The sample consisted of 82 children (43 boys and 39 girls) and their parents who completed two assessments, when children were 2 and 3 years old. At both time points, children wore an actigraph for 3 consecutive days to assess…

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…

Peer nominations and teacher ratings were used to examine age and sex differences in behaviors associated with perceived coolness during middle childhood. Participants were 470 students in Grades 1, 3, and 5. Participants nominated peers whom they perceived as cool; separate scores were calculated for samesex coolness and cross-sex coolness (i.e.,…

Language serves as a mechanism through which children are able to interact and communicate with others. Thus, when children do not develop language at a typical pace, there may be cause for concern. The purpose of the current study was to examine the language production of children displaying various forms of social withdrawal (reticent,…

Children's evaluations of necessary harm (acts intended to prevent a greater harm) and how "maternal disapproval" and "peer relationship" play roles in this context were examined. A total of 120 children at 6, 9, and 12 years of age evaluated scenarios depicting prototypic and necessary (physical or verbal) harm. When a mother…

Data were collected about 95 fourth-grade and fifth-grade children from three sources (teachers, parents, and children) on four constructs related to aggression (proactive aggression, reactive aggression, callous-unemotional traits, and anger dysregulation) by using a multitrait-multimethod design. Two goals were addressed through a…

Past research has shown that, while psychological control increases the risk for adolescents' antisocial behavior, maternal knowledge of adolescents' activities decreases this risk. Yet, research is somewhat inconclusive about the role of psychologically controlling parenting in parental knowledge. Also, the role of both predictors in prosocial…

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…

Although the effect of physical and relational (i.e., traditional) victimization on psychopathology is established, the interdependent contribution of cybervictimization is unclear. We test a longitudinal path model theorizing that (a) children's physical and relational victimization in Grade 4 or 5 is associated with more cybervictimization…

The purpose of the current investigation was to examine if autonomic nervous system reactivity moderated the association between relational victimization and two established outcomes of peer maltreatment, anxious/depressive symptoms and anxious rejection sensitivity. A total of 119 female (M[subscript age] = 12.47, SD[subscript age] = 1.96)…

Positive friendships have been related to decreasing levels of children's physical aggression over time. While this evidence calls for interventions aimed at helping children build good-quality friendships, tests of causality through experimental manipulations are still needed. The goal of this study was to examine whether an intervention aimed to…

We examined whether the moderating role of cortisol in the relation between physical peer victimization and physical aggression was better accounted for by a diathesis-stress model or a differential susceptibility model using a multi-informant approach (direct observations, teacher reports, and parent reports) of 198 preschool-aged children…

This study examined the friendship processes around prosocial and aggressive behaviors and the moderating role of early adolescents' perceived relatedness with teachers. Differences between fifth graders in elementary school and sixth graders in middle school were examined. The sample was from 48 classrooms (N = 879, 51% girls at Wave 1, N = 859,…