Investigated the concurrent validity of the WISC-R I I subtests and three IQs as related to the WRAT standard scores. Correlations were computed for a sample of 28 children (20 boys, 8 girls), aged 7-9 to 16-5 (x of I l-8), who were diagnosed learning disabled by LEA placement terms according to state and federal guidelines. Regression analysis used all three Wide Range Achievement subtests as criteria, and the I I subtests and three 1Q scale scores of the WISC-R as predictors. The results did not support the concurrent validity of the WISC-R for this sample of disabled children and youth.
Numerous studies have investigated the relationship between the Wechsler Intelligence Scale for Children (WISC-R) and the Wide Range Achievement Test (WRAT) (Jastak, 1965). Specifically, the works of , , Hale (1978), ). and Sattler and Ryan (1981) have marshalled ample evidence to indicate that the WISC-R is a significant predictor of WRAT scores. Each of these studies suggested that the WISC-R Verbal Scale IQ is a better predictor of achievement than is the Performance Scale IQ. raised serious doubts as to the adequacy of the WRAT/WISC-R discrepancy scores to identify 4-, 5-, and 6-year-old children who are learning disabled. This current study extends the line of investigating the concurrent validity of the WISC-R using the WRAT subtest scores as the criteria. However, it differs from prior research in one important respect, namely, that all the Ss in the study were diagnosed as learning disabled. In addition, the concurrent validity of 1 1 subtests of the WISC-R also was investigated.