Executive Function and Social Communication Deficits in Young Autistic Children

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Abstract
Preschool-aged, autistic children were compared with both developmentally delayed children of similar non-verbal mental age and normally developing children of similar verbal skill on measures of executive function and social communication skills. Autistic children exhibited significantly more perseverative responses on a test of executive Function when compared to both comparison groups. Autistic children also exhibited significantly fewer joint attention and social interaction behaviors Moreover, a significant relationship was found between executive function skill and the two social communciation skills, which was independent of group membership or verbal ability. Competing hypotheses to account for the relationship between executive function deficits and social communication deficits in, autism are discussed.