Comparisons of the P greater than V sign on the WISC-R and WAIS-R in delinquent males.

Comparisons of the WISC-R and WAIS-R were made in a sample of male delinquents (N = 80) to determine whether they would show differences in the degree to which the P greater than V sign occurred on them. A larger split between mean Verbal and mean Performance IQ was found on the WISC-R than on the WAIS-R. Frequency analyses revealed no differences in the number of persons who showed the P greater than V sign on each test. Age and the P greater than V sign were not related significantly. Results suggest that the WISC-R and WAIS-R may not be equivalent measures of this sign, and caution should be exercised in applying results of research on the WISC and WAIS to the revisions of those tests.