Despite the federal emphasis on achieving timely permanency for children who enter foster care, some children continue to remain in foster care for extended periods, with approximately 20,000 children a year "aging out" of foster care into adulthood without having achieved permanency in a family setting ( Dworsky, 2008 ). This literature review focuses on the federal Child and Family Services Review measure that measures agency performance related to achieving permanency for children in foster care for long periods of time. The review summarizes the factors associated with timely...