Growing evidence reveals heterogeneity in antisocial behavior and urges the need to distinguish between aggressive and nonaggressive rule-breaking behaviors. This study characterized how aggression and rule-breaking behaviors shaped peer selection and influence. Using a longitudinal social network modeling approach, these questions were addressed in a sample of 1034 ethno-racially diverse early adolescents (49.52% females, Mage = 12.1), who were assessed in fall and spring of the same year. The results showed no evidence of peer selection on aggressive and rule-breaking behaviors, and significant peer influence on aggressive behavior only. Rule-breaking also forecasted a decreased susceptibility to peer influence on aggressive behavior. The findings expanded our knowledge about complex pathways through which heterogeneity in antisocial behavior is reciprocally related to friendship networks.
