Specific Aim 3: Investigate the impact of PCIT on neurobehavioral indices of CM children's self-regulation. CM exerts detrimental effects on children's developing capacities to regulate attention, emotion, physiology, and behavior. Deficits in these domains confer heightened risk for psychopathology, early-onset conduct problems, and later substance abuse. The investigators hypothesize that PCIT, though directed primarily toward parenting, will effect improvements in neurobiological indicators of CM children's self-regulation at post-treatment, relative to the control group. Next, the investigators will test the extent to which child outcomes are mediated through intervention effects on parenting. It is hypothesized that child regulatory deficits and behavior problems will be attenuated by PCIT-based reductions in aversive parenting that result from the intervention.