The Developmental Disabilities Assistance and Bill of Rights Act (commonly known as the DD Act) provides federal financial assistance to states and public and nonprofit agencies to support community-based delivery of services to persons with developmental disabilities. The DD Act defines developmental disabilities (DD) as severe, life-long disabilities attributable to mental and/or physical impairment. The aim of the DD Act is to help individuals with DD maximize their potential through increased independence, productivity, inclusion and integration into the community. This book provides background and funding information on DD Act programs, discusses evaluation activities, and summarizes recent legislative efforts related to the DD Act.