This retrospective study examined two distinct parenting dimensions, demandingness and responsiveness, as independent predictors of adolescent sexual risk behavior. The data used to test study hypotheses were from Waves I and II of the National Longitudinal Study of Adolescent Health (Add Health). In this sample of 2,030 adolescents and their mothers, maternal demandingness [odds ratio (OR)=0.77] and maternal responsiveness (OR=0.89) independently predicted adolescent abstinence from sex. Findings substantiate the use of a dimensional approach to measuring parenting in examining adolescent sexual behavior.