Using longitudinal data from the Fragile Families and Child Wellbeing Survey (FFS), we examine the engagement patterns of fathers and mothers in married and cohabiting households to determine whether father engagement is associated with childhood behaviors independent of the mother's characteristics and her level of engagement. Engagement activities were measured when the child was 5 years old with a behavioral outcome when the child was 9 years old. We found significant and negative associations between father engagement and children's behavioral problems, independent of maternal engagement.