Advanced Placement Calculus examinations were administered to nearly 7,000 students in order to determine the impact of calculator use. Both experimental examinations had two sections. Section I items were designed so that a calculator was not needed, but approximately half of the students were permitted to use calculators. Section II items…

This paper discusses the assumptions required by the item response theory (IRT) true-score equating method (with Stocking & Lord, 1983; scaling approach), which is commonly used in the nonequivalent groups with an anchor data-collection design. More precisely, this paper investigates the assumptions made at each step by the IRT approach to…

Steele and Aronson (1995) found that the performance of African-American subjects on test items portrayed as a problem-solving task, in a laboratory experiment, was adversely affected when they were asked about their ethnicity. This outcome was attributed to "stereotype threat". Performance was disrupted by the subjects' concerns about…