Interparental conflict is a known risk factor for child adjustmentproblems; yet few studies have examined its long-term effects. Thisstudy tests the following hypotheses: Interparental conflict has bothlongitudinal and concurrent influences on the functioning of youngadult children, and the relationship between young adults and theirparents mediates these influences. We assessed a community sample(N = 243) of families when the target child was in early tomiddle adolescence. We then reassessed them 6 years later during youngadulthood. The links of interparental conflict measured at the twotime points to young adults' general psychopathology andantisocial behavior were examined using multiple regressionanalyses. The quality of the relationship between young adults andeach parent was added to each equation as a potential mediatingvariable. Results showed that concurrent, but not earlier,interparental conflict predicted males' antisocial behavior. Nosupport was found for the mediational model, but support was found foran alternate model positing direct effects for interparental conflictand the parent-young adult relationship on young adultfunctioning. For females and males, problematic relationships withmothers and fathers predicted greater general psychopathology, whileproblems in paternal relationships predicted higher levels ofantisocial behavior only for females.