The present study builds on theoretical and empirical prior work indicating that children's executive function (EF) skills are important precursors to emotional and behavioral regulation and that these skills are likely best promoted when addressed across classroom and home contexts. Specifically, the proposed study will exploit a randomized experimental design to evaluate the effects of a direct child training targeting EF on children's emotional and behavioral regulation and the value added of training both children and parents in these areas. The parent-training curriculum is focused on developing strong parent-child interactions with a specific emphasis placed on teaching parents the developmental importance of EF. These interventions will be implemented and evaluated in Head Start centers in Boston and the pathways through which these interventions operate to influence regulation will be examined.