This report from the Center on the Developing Child, considers lessons learned from five decades of program evaluation research, identifies five core principles to inform policymaking and program development, and discusses the importance of investing in research and development to better the lives of America’s children. The core principles identified in this report include building caregiver skills; matching interventions to sources of significant stress; and supporting the health of the mother and child before, during, and after pregnancy. (Description from source)