The goal of the current study was to examine the impact of mothers’ attachment classification on their ability to change their parenting beliefs and behaviors over the course of a parenting intervention program. Results indicated that in large part, this study did not support the idea that secure mothers would benefit more from a parenting intervention program than insecure mothers. However, treatment group placement was found to moderate the extent to which attachment security and time interact on level of permissiveness. Specifically, insecure mothers in the seminar plus hands-on condition significantly decreased in their permissiveness over time. Thus, insecure individuals benefit from parenting intervention programs when they have the opportunity to practice as well as learn the material presented to them. / text