This compilation of position statements of the Association for Retarded Citizens (ARC) describes what the Association believes on critical issues related to rights, treatment, services, and programs for children and adults with mental retardation and their families. This publication contains positions that the Board of Directors of ARC of the United States agreed, in 1988, should remain in force as written and those new and/or revised that were approved by the ARC's Delegate Body in 1989 and 1990. Specific position statements address the following topics: the rights of people with mental retardation, quality assurance, family support, individual service coordination (case management), integration, self-advocacy, sexuality, education, employment, residential living arrangements, behavior intervention, guardianship, and prevention of mental retardation. (JDD)