Friendship quality and psychosocial outcomes among children with traumatic brain injury.

This study examined differences in friendship quality between children with traumatic brain injury (TBI) and orthopedic injury (OI) and behavioral outcomes for children from both groups. Participants were 41 children with TBI and 43 children with OI (M age=10.4).

Criterion validity of interpreting scores from multi-informant statistical interactions as measures of informant discrepancies in psychological assessments of children and adolescents.

Parents and adolescents often provide discrepant reports of adolescent and family behavior. Recent work indicates that scores from indirect measures of discrepancies between parent and adolescent reports, namely, statistical interactions between reports, longitudinally predict adolescent psychopathology. However, no previous work supports the criterion validity of interpreting scores from these interactions as indirect measures of informant discrepancies.

Individualism and socioeconomic diversity at school as related to perceptions of the frequency of peer aggression in fifteen countries.

The purpose of this study was to examine two aspects of context for peer aggression: national individualism and distributions of socioeconomic status in the school. School administrators for each school reported on their perceptions of the frequency of bullying and violence in their school. The sample comprised 990 school principals/headmasters from nationally representative samples of schools in 15 countries surveyed as part of the larger IEA Civic Education Study (Torney-Purta, Lehmann, Oswald, & Schulz, 2001).

Prosocial Behavior Moderates the Effects of Aggression on Young Adolescents' Friendships.

The current study explored how prosocial behavior may moderate how aggression is related to the features of adolescents' friendships. Young adolescents ( = 910) completed friendship nominations in the fall and spring of their first year of middle school. Behavioral nominations of aggression and prosocial behavior were also collected in the fall.