Field tests of test items are useful in developing cutting scores for important tests, such as teacher certification examinations and high school graduation tests, because they indicate test item quality and estimate future examinee performance. However, field test data may provide a faulty indication of examinee performance on the real test.…

An overview of the development of a computerized version of the Differential Aptitude Tests (DAT) is presented. It describes the previously existing printed version of the DAT, design of the computerized adaptive edition, calibration of the test items for use in the computerized version, and two field studies that compared the Adaptive and…