Examined the comparability of the WAIS and WAIS-R by administering the two scales to a sample of 88 adults in a counterbalanced order. The obtained data were analyzed by correlational and repeated measure three-way analysis of variance procedure. The indices of obtained correlation coefficients suggested a high degree of similarity between the two scales. The findings from ANOVA indicated statistically significant differences in the subtest performance (except in the performance of the Picture Arrangement), and three IQs on the WAIS and WAIS-R. Performance of Ss was found to be higher on the WAIS as compared to their performance on corresponding subtests and IQs on the WAIS-R. These results were found to be consistent with the data reported by earlier studies that compared revisions of the Wechsler and Stanford-Binet scales with older tests.