This study explored adolescents' emotional security as an intervening variable in the path from the interaction between interparental aggression and parental problem drinking and adolescents' internalizing and externalizing behavior problems. Additional tests were conducted to explore the impact of parental gender in these relationships. Information from multiple reporters was obtained during laboratory sessions attended by mothers, fathers and their adolescent child. Direct and indirect effect models were tested. Results indicated a direct relationship between marital aggression and adolescents' internalizing behavior problems, and adolescents' emotional security was shown to mediate the relationship between marital aggression and adolescents' depression and anxiety. Furthermore, analyses suggested deleterious effects of parental problem drinking on adolescents' adjustment. Implications of these results are discussed.