The aim of the proposed study is to develop a theory-informed mobile health (mHealth) application for urban caregivers attempting to improve their children's oppositional and conduct related difficulties (i.e., disruptive behavior disorders; DBDs). The majority of evidence-based treatments (EBTs) targeting youth DBDs emphasize change in specific parenting/family-level processes empirically linked to the maintenance of DBDs. Existing EBTs frequently include at-home-practice-exercises (i.e., homework; HW) to reinforce parent skill acquisition and maximize use of new skills with children at home. Poor quantity and quality of HW completed by parents significantly attenuates the effect of EBTs. This is a significant limiting-factor in many EBTs attaining full public health impact. Given the robust effect of HW on outcomes from EBTs across a range of behavioral health difficulties and populations, there is a call for moving beyond the question of whether HW is important to questions such as what processes are involved in HW implementation and how best to support these processes. Minimal investigation has been focused on these critical questions.