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QUESTION 14 Examination of tests such as the WAIS and WISC-R have found that white males are more often depicted in test items than other groups. What has research shown about such differences? O a. No one has established that these differences affect test performance. O b. They account for a large percentage of test score differences. O c. They have a greater impact on females than on males. O d. They have a substantial impact on younger children but little impact on adults