 Autism is a severe neurodevelopmental disorder characterized by impaired social interaction and communication, and by a markedly restricted repertoire of activities and interests. The population prevalence of autism is approximately 1 in 1000 GILLBERG and WING, 1999 and the ratio of affected males to females is 4:1 FOMBONNE, 1999. Although typically considered a childhood disorder, most persons with autism experience marked functional impairment throughout their lives. Follow-up studies of children with autism show that only 5-10 become independent as adults, 25 progress but still require supervision, and the remaining continue to be severely impaired and in need of institutionalized care WING, 1989. Thus, the syndrome represents a substantial public health problem with tragic cost to the individual, the family, and the community. 