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Deng, Hui; Melican, Gerald – College Board, 2010
The current study was designed to extend the current literature to study scale drift in CAT as part of improving quality control and calibration process for ACCUPLACER, a battery of large-scale adaptive placement tests. The study aims to evaluate item parameter drift using empirical data that span four years from the ACCUPLACER Arithmetic…
Descriptors: Student Placement, Adaptive Testing, Computer Assisted Testing, Mathematics Tests