Patterns of adaptive behavior in very young children with autism.

The Vineland Adaptive Behavior Scales were used to investigate patterns of adaptive behavior in children with autism who were under 36 months of age. Subjects were 30 children with autism and 30 children with developmental delay matched on CA and MA. Relative to controls, the autistic group demonstrated weaker socialization and communication skills and greater discrepancies between adaptive behavior and MA. Different patterns of relations between adaptive behavior domains and cognitive and language skills were obtained for the two groups. Preliminary support for the utility of adaptive behavior profiles in identifying subgroups of children with autism is provided. Results are discussed in terms of their implications for early diagnosis of autism.