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Appl Neuropsychol. 2001;8(3):148-54.

A comparison of WAIS-R profiles in adults with high-functioning autism or differing subtypes of learning disability.

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VA Pittsburgh Healthcare System and School of Medicine, University of Pittsburgh, Pennsylvania 15206, USA.


To examine cognitive differences among adults with differing developmental disorders, a comparison of Wechsler Adult Intelligence Scale-Revisedprofiles was made with samples of 35 individuals with high-functioning autism (HFA) and 102 individuals with adult learning disability (LD). All participants had Verbal andPerformance IQ scores of 70 or higher. The LD group was divided into 3 subtypes based on relative achievement levels in mechanical reading and arithmetic. The group with HFA had a profile characterized by a high score on Block Design with a low Comprehension score. The HFA group most resembled the LD subtype that had superior achievement in reading relative to arithmetic, with the exception of their poor performance on measures of social perception and judgment. Results are discussed in terms of the substantial differences in cognitive structure between these 2 neurodevelopmental disorders and are considered in the context of the learning deficits reported for Asperger 's Disorder and nonverbal learning disability.

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