This study focuses on the impacts of serial transitions on externalized and internalized behavior disorders, anxiety, and depression among children in child protection services. The research was carried out with a sample of 741 children. The findings demonstrate that the number of times a family is blended is a stronger predictive factor for children's adjustment than is the family structure at the time of the interview. In predicting externalized and internalized behavior problems among children, however, the effect of family structure disappears in favor of the variables associated with family functioning and family climate. (Contains 1 figure and 6 tables.)