Parenting behaviors have received ample support as a mediator of the relationship between maternal affect and child behavior problems. The majority of these research efforts were based on a uni-dimensional conceptualization of maternal mood, even though decades of theory and research suggest that mood is multidimensional. We examined the mediating role of parenting behaviors on positive affect (PA) and negative affect (NA) and reports of child behavior problems. Evidence for mediation was demonstrated for both PA and NA for children in early to middle childhood. Consistent with the positive psychology movement, our results suggest that maternal PA plays an important role in parents’ utilization of effective parenting behaviors. Implications for clinical intervention and future research are discussed.