Parent and adolescent self-reports are the most common sources for measuring parenting practices. This study's purpose was to compare how parent and adolescent reports of parenting behaviors differentially predict adolescent gateway drug use. The sample consisted of 252 Latino adolescent-parent dyads. After controlling for potential confounding influences, only adolescents' reports about their parents' parenting behaviors were significant and explained 38 percent of the variance in gateway drug use. Practitioners may recommend to parents seeking parenting advice that they solicit feedback from their adolescent to ensure parenting efforts are received in the manner they were intended. (Published Abstract)