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Zwick, Rebecca; And Others – Journal of Educational Measurement, 1995
In a simulation study of ability and estimation of differential item functioning (DIF) in computerized adaptive tests, Rasch-based DIF statistics were highly correlated with generating DIF, but DIF statistics tended to be slightly smaller than in the three-parameter logistic model analyses. (SLD)
Descriptors: Ability, Adaptive Testing, Computer Assisted Testing, Computer Simulation
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Zwick, Rebecca; And Others – 1994
A previous simulation study of methods for assessing item functioning (DIF) in computer-adaptive tests (CATs) showed that modified versions of the Mantel-Haenszel and standardization methods work well with CAT data. In that study, data were generated using the three-parameter logistic (3PL) model, and this same model was assumed in obtaining item…
Descriptors: Ability, Adaptive Testing, Computer Assisted Testing, Computer Simulation
Hicks, Marilyn M. – 1989
Methods of computerized adaptive testing using conventional scoring methods in order to develop a computerized placement test for the Test of English as a Foreign Language (TOEFL) were studied. As a consequence of simulation studies during the first phase of the study, the multilevel testing paradigm was adopted to produce three test levels…
Descriptors: Adaptive Testing, Adults, Algorithms, Computer Assisted Testing