Detecting unusual similarity in the item responses of a pair of examinees usually conditions on the pair's overall test performance (e.g., raw scores). Doing this, however, often requires assumptions about the invariance of other examinee pair characteristics. In this study, we examined the appropriateness of such assumptions about selected…

The effects of test content reflecting black or white culture, on the performance of college-bound students of both races was examined. Eighty-five culture-specific items were developed for use in the English Usage and Social Studies Reading subtests of the ACT (American College Testing) Assessment Program. Items were administered as four separate…