This study investigated the performance of four widely used data-collection designs in detecting test-mode effects (i.e., computer-based versus paper-based testing). The experimental conditions included four data-collection designs, two test-administration modes, and the availability of an anchor assessment. The test-level and item-level results…

The current study compares the progressive-restricted standard error (PR-SE) exposure control method with the Sympson-Hetter, randomesque, and no exposure control (maximum information) procedures using the generalized partial credit model with fixed- and variable-length CATs and two item pools. The PR-SE method administered the entire item pool…

Indices that detail aspects of student test responses include overall aberrancy; tendencies to miss relatively easy items; tendencies to correctly answer more difficult items; and a combination that indicates how the latter tendencies balance each other. Mathematics test results for 368 college students illustrate the indices. (SLD)