Longitudinal relations among ego-resiliency (ER), effortful control (EC), and observed intrusive parenting were examined at 18, 30, and 42 months of age ("Ns" = 256, 230, and 210) using structural equation modeling. Intrusive parenting at 18 and 30 months negatively predicted EC a year later, over and above earlier levels. EC at 30 months mediated the negative relation between 18-month intrusive parenting and ER at 42 months when controlling for stability of the variables. ER did not predict EC. The findings suggest that intrusive parenting may have a negative effect on children's ego-resiliency through its effects on children's abilities to regulate attention and behavior. (Contains 2 tables and 1 figure.)