Adaptive behavior of young urban children with developmental disabilities.

Adaptive behavior was investigated for 497 urban preschool children with developmental disabilities (autism, pervasive developmental disorder, language impairment, mental retardation, attention-deficit hyperactivity disorder, cognitive deficit), ranging in age from 15 to 71 months, 38% of whom were in foster care. Disabilities were identified through comprehensive multidisciplinary evaluation. Adaptive behavior was assessed with the Vineland Adaptive Behavior Scales. Results indicate a strong positive relation between adaptive behavior and intelligence if measured globally. When Vineland domains were assessed separately, this relation varied across domains and disability groups. With intelligence controlled, adaptive behavior patterns differed for disability groups in communication and socialization.