Recent research indicates that the development of antisocial behavior among students is influenced by the behavioral characteristics of their classmates. However, not all peers in a given class may exert the same influence. Thus, we examined the extent to which individual development is predicted by the perceived proportion of all students with…

Cognition plays a major role in the development of antisocial behavior. The aim of this study was to extend the current state of research regarding the mechanisms of negative peer influence in adolescence by testing whether aggregated classroom attitudes (injunctive norms) predict individual attitudes toward antisocial behavior and vice versa. For…

Background: Different dimensions of oppositional defiant disorder (ODD) have been found as valid predictors of further mental health problems and antisocial behaviors in youth. The present study aimed at testing the construct, concurrent, and predictive validity of ODD dimensions derived from parent- and self-report measures. Method: Confirmatory…