This book is the culmination of a body of research covering what works in the field of child welfare. Quite often we know that some programs benefit the children and families served, but rarely do we know how or why they work. What Works is written in a style accessible to all audiences and attempts to bridge the gap between researchers and policymakers. It is divided into six major sections: family preservation and support services, child protective services, out-of-home care, adoption, child care, and services for adolescents. Each section contains information on what works, conflicting evidence, cost effectiveness, and a summary table.