The purpose of these studies was to examine the frequency and stability of relational and physical aggression and their associations with social-psychological adjustment or peer victimization, and how friendships are involved in the relations between forms of aggression and peer victimization in Japanese children. The sample consisted of 452…

The purpose of this study was (1) to evaluate psychometric properties that assess forms of aggression (i.e., relational and physical aggression) across cultures (i.e., Japan and the United States) and (2) to investigate the role of culture in the associations between forms of aggression and social-psychological adjustment problems such as…