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Abstract

WISC-R IQs and WISC-III IQs of 65 urban, exceptional students who underwent a 3-yr. reevaluation were compared. Primary questions concerned (a) mean differences in scores between respective WISC-R and WISC-III scales and subtests and (b) the relationships among scores on WISC-R and WISC-III scales and subtests. Analysis indicated that mean scores on the WISC-III scales were significantly lower than those on the WISC-R scales. Among the subtests, WISC-III IQs were significantly lower than WISC-R IQs on Similarities, Comprehension, and Coding. Intercorrelations computed between all Wechsler scales' IQs indicated substantial conceptual overlap (Full Scale IQ = .88, Verbal IQ = .86, Performance IQ = .82). The utility of the WISC-III in the placement process was supported; however, the changes on the WISC-III scales and subtests are such that caution must be exercised in the reclassification of exceptional students.

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Comparison of WISC-R and WISC-III Scores of Urban Exceptional Students

Abstract

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References