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Assessing The Model Fit Of Multidimensional Item Response Theory Models With Polytomous Responses Using Limited-Information Statistics, Caihong Rosina Li
Assessing The Model Fit Of Multidimensional Item Response Theory Models With Polytomous Responses Using Limited-Information Statistics, Caihong Rosina Li
Theses and Dissertations--Education Sciences
Under item response theory, three types of limited information goodness-of-fit test statistics – M2, Mord, and C2 – have been proposed to assess model-data fit when data are sparse. However, the evaluation of the performance of these GOF statistics under multidimensional item response theory (MIRT) models with polytomous data is limited. The current study showed that M2 and C2 were well-calibrated under true model conditions and were powerful under misspecified model conditions. Mord were not well-calibrated when the number of response categories was more than three. RMSEA2 and RMSEAC2 are …