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Applying Unidimensional and Multidimensional Item Response Theory Models in Testlet-Based Reading Assessment
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Min, Shangchao; He, Lianzhen – Language Testing, 2014
This study examined the relative effectiveness of the multidimensional bi-factor model and multidimensional testlet response theory (TRT) model in accommodating local dependence in testlet-based reading assessment with both dichotomously and polytomously scored items. The data used were 14,089 test-takers' item-level responses to the testlet-based…
Descriptors: Foreign Countries, Item Response Theory, Reading Tests, Test Items