MODAL PROFILES FOR THE WECHSLER ADULT INTELLIGENCE SCALE-REVISED

Modal profile analysis war used to cluster Wechsler Adult Intelligence Scale-Revised subtest and factor profiles in a sample of patients ref erred for neuropsychological evaluation. Results yielded five modal pr ofiles for subtest profiles and four modal profiles for factor profile s. However when a classification rule was used to assign subtest profi les to modal groups, the subtest modal profiles classified only 37% of the sample. When the same rule was used to assign factor profiles to modal groups, the factor modal profiles classified 100% of the sample. For both subtest profiles and factor profiles, the largest portion of profile variance (48.1% and 65.9%, respectively) was accounted for by differences in profile elevation. Differences in profile scatter acco unted for 4.5% of the variance in subtest profiles, while profile scat ter accounted for 8.9% of the variance in factor profiles. Discussion focuses on the coverage and uniqueness of the two typologies and on th e component sources of information in WAIS-R profiles.