Abstract
Four subtypes of Wechsler Intelligence Scale for Children-Third Edition (WISC-III) factor index score patterns were identified by means of two-stage cluster analysis in a sample of 153 children with traumatic head injury (THI). Three of these subtypes were differentiated primarily by level of performance, and bore close resemblance to clusters known to be prevalent in the WISC-III standardization sample. One subtype displayed an uncommon pattern of performance, characterized by selective impairment on the Perceptual Organization and Processing Speed factor indexes, which may be clinically significant in children with THI. Support for the reliability and validity of the subtypes is provided. It is concluded that the WISC-III is a useful tool in the evaluation of sequelae of THI in children.
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