An index of brain damage adapted from an adult neuropsychological assessment key was applied to the WISC scores of 40 brain-damaged and control children. Using the existing adult cut-off points, 30 out of 40 nine- to fourteen-year-old children were correctly classified as brain-damaged or control on the basis of 4 WISC performance test scores. This rate of correct classification was highly significant (p < .01).
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