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J Autism Dev Disord. 2008 Mar;38(3):428-39. Epub 2007 Jul 4.

WISC-IV and WIAT-II profiles in children with high-functioning autism.

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Department of Psychiatry H073, The Penn State University College of Medicine, Milton S. Hershey Medical Center, Hershey, PA 17033, USA.


Children with high-functioning autism earned above normal scores on the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) Perceptual Reasoning and Verbal Comprehension Indexes and below normal scores on the Working Memory and Processing Speed Indexes and Wechsler Individual Achievement Test-Second Edition (WIAT-II) Written Expression. Full Scale IQ (FSIQ) and reading and math scores were similar to the norm. Profiles were consistent with previous WISC-III research, except that the new WISC-IV motor-free visual reasoning subtests (Matrix Reasoning and Picture Concepts) were the highest of the nonverbal subtests. The WISC-IV may be an improvement over the WISC-III for children with high-functioning autism because it captures their visual reasoning strength, while identifying their attention, graphomotor, and processing speed weaknesses. FSIQ was the best single predictor of academic achievement.

[Indexed for MEDLINE]

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