Affect and cognition in autism.

An array of six photographs of the same woman was used to assess the ability of 18 autistic, 14 nonautistic mentally retarded, and 18 normal preschool subjects to use affect- and activity-related concepts in the solution of cognitive tasks. The Total Performance Level of the autistic and mentally retarded subjects did not differ significantly. Autistic subjects performed imitation, directed action, and description tasks less well in the affect mode. The findings are consistent with other studies, suggesting an impairment in the expression of emotion in autism.

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