Predictors of dyadic friendship quality in adolescence

Five dimensions of friendship quality (conflict, closeness, companionship, helping, and security) were predicted from self-reports and peer reports of physical aggression, relational aggression, and prosocial behaviour, using the Actor-Partner Interdependence Model (Kenny & Acitelli, 2001). Participants were 224 adolescents aged 15-17 years (142 girls, 82 boys) who formed 112 unique same-sex best friend dyads. Significant actor and partner effects were found for both self-ratings and peer nominations of social behaviour and the five friendship qualities. Aggression was associated with self and partner perceptions of friendship conflict and low positive friendship qualities. Prosocial behaviour was associated with self and partner perceptions of positive friendship qualities and low conflict. The findings of this study were mostly consistent between male and female dyads. The importance of examining dependence due to dyads in peer relations research was discussed.