The concurrent validity of the Kaufman Assessment Battery for Children (K-ABC) was examined by comparing K-ABC scores and Weschler Intelligence Scale for Children--Revised (WISC-R) scores for 58 school children in primary and intermediate grades. Thirty-seven of these children had either educable mental retardation, learning disabilities, or…

Because diagnostic capability of the WISC-R has remained in doubt, its diagnostic suitability was assessed by applying Kelley's method of estimating the proportion of score differences in excess of chance to the original subscales, Bannatyne clusters, and Kaufman's three factor groupings. Caution should be used when applying WISC-R diagnostically.…