The Role of Functions of Aggression in Associations Between Behavioral Inhibition and Activation and Mental Health Outcomes

While the behavioral acitivation system (BAS) has been most consistently linked to externalizing behaviors, the behavioral inhibition system (BIS) has been more closely related to internalizing outcomes. Proactive and reactive aggression have demonstrated a similar pattern of association, with proactive aggression more closely linked to externalizing behavior and reactive aggression more consistently linked to internalizing symptoms. Despite theoretical links, few studies have examined associations between these constructs. Accordingly, the current study examined associations between the BAS and BIS and proactive and reactive aggression, and the role of proactive and reactive aggression in the link between the BAS and BIS and mental health outcomes. The BAS was associated with both proactive and reactive aggression, while the BIS was uniquely related to reactive aggression. Both proactive and reactive aggression appear to be playing a role in associations between the BAS and indicated mental health outcomes. Implications and future directions are discussed.