Autism is a lifetime disorder, but surprisingly little is known about the effects it has on the individual's abilities, needs, and experiences as he or she reaches and continues through adulthood. Moreover, there is a real possibility that the detrimental effects typical of normal aging may be accelerated in individuals with autism. An understanding of cognitive and functional aging in adults with autism is vital in order to predict the long-term impact on individuals, their families, and on health support systems. In this study, researchers will characterize the support needs of ASD individuals in middle and later-age (30-70 years) by surveying subjects and their caregivers to determine individual level of independence, daily living skills, social skills, frequency of problem behaviors, and overall quality of life. Extensive information will be collected with regard to service usage and support needs, and direct testing will be used to determine cognitive and motor functions and current autism symptomology. Results from this project will help to determine the effects of aging on the individual with autism and, in turn, may help to predict future support needs for this population as they age and as they transition from family support to public support.