Comparison of WISC and WISC-R scores of referred black,white and Latino children

Seventy-two school psychologists in the tri-state area of Michigan, Illinois and Ohio administered both the WISC and WISC-R to 164 black, white and Latino children in a counterbalanced order with a specific test-retest interval of not less than a week or more than a month. These children had been referred to the school psychologist because of concerns about their intellectual ability. Significant WISC/WISC-R differences were found, with the WISC-R yielding lower results. These results have implications for test users, special education programs, and mainstreaming efforts.