A Comparison Testlet-based Test Designs for Computerized Adaptive Testing |
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0.5 2 Testlets 25,000 simulated test ability distribution ability estimates adapts item difficulty administered three randomly allow item review Bayes modal score Bayes sequential scoring bias statistic Computerized Adaptive Testing computerized LSAT difficulty to test flat distribution Hambleton high stage-two testlets item selection Law School Admission less error level of stage LSAC maximum-information item-level design maximum-information testlet-based design mean squared error multistage designs multistage test multistage testlet design nonpsychometric normal distribution Owen's Bayes sequential Paper & Pencil precision of ability provide a solution psychometric rerouted right score RMSE root mean squared roughly adapted routing test School Admission Council sequential scoring Owen simulated test takers Stage 2 mean stage-one number-right score stage-two levels stage/level standard CAT design standard maximum-information item-level standard normal Swaminathan takers and test-score test taker ability test-score users Testlet 4-5 testlet centered Testlet FIGURE testlet information testlet level Testlet Stage testlets bundles two-stage and multistage two-stage design two-stage testlet design