Strictly defined, ""coparenting"" is a relationship in which the biological or adoptive parents are not in a marriage, cohabitation, or sexual relationship with each other. Coparents may be members of the extended family, divorced or foster parents, or other specialized caregivers. The editors of this volume bring together a wide range of research to explore the various caregiving arrangements and dimensions that the term comprises. Part I of Coparenting examines the concepts, theories, and empirical research underlying this dynamic socialization force characteristic of all family systems. Part II explores clinical applications--the various assessments and interventions that promote coparenting. The volume concludes with policy implications for human services agencies, courts, and educational systems to encourage good coparenting as a powerful support for at-risk children's social, emotional, and behavioral needs.