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Using Posterior Predictive Checking of Item Response Theory Models to Study Invariance Violations

The common practice for testing measurement invariance is to constrain parameters to be equal over groups, and then evaluate the model-data fit to reject or fail to reject the restrictive model. Posterior predictive checking (PPC) provides an alternative approach to evaluating model-data discrepancy. This paper explores the utility of PPC in estimating measurement invariance. The simulation results show that the posterior predictive p (PP p) values of item parameter estimates respond to various invariance violations, whereas the PP p values of item-fit index may fail to detect such violations. The current paper suggests comparing group estimates and restrictive model estimates with posterior predictive distributions in order to demonstrate the pattern of misfit graphically.

Identiferoai:union.ndltd.org:unt.edu/info:ark/67531/metadc984130
Date05 1900
CreatorsXin, Xin
ContributorsNatesan, Prathiba, Combes, Bertina H., 1958-2021, Henson, Robin K. (Robin Kyle), Song, Kaisheng
PublisherUniversity of North Texas
Source SetsUniversity of North Texas
LanguageEnglish
Detected LanguageEnglish
TypeThesis or Dissertation
Formativ, 91 pages, Text
RightsPublic, Xin, Xin, Copyright, Copyright is held by the author, unless otherwise noted. All rights Reserved.

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