Associations Between Maternal Negative Affectivity and Young Children's Disruptive Behavior Problems: The Mediating Effect of Callous-Unemotional Traits.

The current study examined associations between maternal negative affectivity (NA) and child disruptive behavior problems. The mediating role of child callous-unemotional (CU) traits in these relationships was also investigated. A multilevel mediation modeling approach was adopted using a sample of 100 families with children between 2.5 and 5.5 years of age (N = 201; mean age = 3.8, standard deviation = 1.0). The mediation models showed significant mediating effects of maternal NA through CU traits for ADHD (β = 0.12, p<.01), ODD (β =0.13, p<.01), and aggression (β =0.16, p<.001), and a significant direct effect for aggression (β = 0.12, p<.05). A structural equation modeling analysis was also performed, and overall, the results were consistent with that from mediation models, which suggested that child CU traits were significantly correlated with maternal NA (β = 0.252, p<.001), ADHD (β = 0.504, p<.001), ODD (β = 0.545, p<.001), and aggression (β = 0.686, p<.001). Our results indicated that maternal NA could serve as a potential risk factor for child CU, which, in turn, may contribute to disruptive behavior during early childhood.