Problem/Condition: Autism spectrum disorders (ASDs) are a group of developmental disabilities characterized by atypical development in socialization, communication, and behavior. ASDs typically are apparent before age 3 years, with associated impairments affecting multiple areas of a person's life. Because no biologic marker exists for ASDs,…

This report presents basic descriptive statistics on persons with mental retardation and related conditions in state-operated residential facilities on June 30, 1989. The report distinguishes among facilities by size, notably those with 15 or fewer residents and those with 16 or more residents. It also distinguishes between two general classes of…

Statistics on the current status and the changing patterns of services for persons with developmental disabilities are presented in graphic, tabular, and narrative form. The volume summarizes national statistics gathered through the Ongoing Data Collection System of the Administration on Developmental Disabilities and other sources of national…