The purpose of this study was to determine whether it is both possible and cost-effective to revise middle-difficulty Graduate Record Examinations (GRE) discrete items in order to produce items of higher or lower difficulty. The basic procedure was to select items of a given difficulty and, by revising the distractors, make them easier or more…

Three experiments were conducted, all employing undergraduates in college courses taught according to personalized system of instruction (PSI) principles. Experiment I examined retention as a function of the feedback delay interval in an introductory anthropology course using short-answer essay tests. Experiment II varied the feedback delay…

A solution to reduce the likelihood of one examinee copying another's answers on large scale tests that require all examinees to answer the same set of questions is to use multiple test forms that differ in terms of item ordering. This study was conducted to determine whether varying the sequence in which blocks of items were presented to…