We used a multiple baseline across strategies design to determine the effect of technology-enhanced performance-based feedback on parent's use of preventive strategies to address children's challenging behaviors for two parent--child dyads. A father, mother, and each of their young children participated. We also measured associated child outcomes and parent's perceptions of the technology-enhanced performance-based feedback intervention. We observed a functional relation between our intervention and parent practice. Although variable, desired child behaviors increased, and challenging behaviors decreased. Finally, parents indicated that they perceived the intervention to be socially valid.