Systematic observations of parent-child interaction collected in the homes of 25 families who participated in a parent-mediated social reprogramming treatment project for aggressive boys were used to assess changes in parent consequences for child behavior. Analyses comparing baseline and termination consequence ratios revealed significant reductions in maternal aversive consequences provided for deviant and prosocial behavior and in paternal positive consequences provided for deviant behavior. Additional analyses revealed taht reductions in inappropriate parent consequences were not the result of a general overall reduction in parent-child interaction. It is concluded that the treatment program was partially successful in producing changes in the ongoing pattern of consequences provided by the parents. These changes consisted of reductions in inappropriate consequences rather than increases in appropriate consequences.