Correlations between the WAIS-R Verbal, Performance, and Full Scale IQs, WAIS-R subtest scaled scores, and Wide Range Achievement Test Reading, Spelling, and Arithmetic standard scores were computed for a sample of 60 patients at a V.A. medical center who were referred for routine psychological evaluation. The Full Scale IQ and Verbal IQ yielded large correlations with the three achievement area standard scores (rs of .60 to .76). However, Performance IQs correlated moderately with reading and spelling scores (rs of .41 and .42), but a larger correlation obtained with arithmetic scores (r = .66). The results support the concurrent validity of the WAIS-R.
Get full access to this article
View all access options for this article.
References
1.
CohenJ.Statistical power analysis for the behavioral sciences. New York: Academic Press, 1969.
2.
GrossmanF. M.JohnsonK. M.WISC-R factor scores as predictors of WRAT performance: a multivariate analysis. Psychology in the Schools, 1982, 19, 465–468.
3.
HaleR. L.The WISC-R as a predictor of WRAT performance. Psychology in the Schools, 1978, 15, 172–175.
4.
JastakJ. F.JastakS. R.The Wide Range Achievement Test: manual of instructions. Wilmington, DE: Jastak Assoc., 1978.
5.
SattlerJ. M.RyanJ. J.Relationship between WISC-R and WHAT in children referred for learning difficulties. Psychology in the Schools, 1981, 18, 290–292.
6.
SchwartingF. G.SchwartingK. R.The relationship of the WISC-R and WRAT: a study based upon a selected population. Psychology in the Schools, 1977, 14, 431–433.
7.
StedmanJ. M.LawlisG. F.CortnerR. H.AchterbergG.Relationship between WISC-R factors, Wide Range Achievement Test scores, and visual-motor maturation in children referred for psychological evaluation. Journal of Consulting and Clinical Psychology, 1978, 46, 869–872.
8.
WechslerD.Manual for the Wechsler Adult Intelligence Scale—Revised. New York: Psychological Corp., 1981.
