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Adams, Raymond J.; Wu, Margaret L.; Wilson, Mark – Educational and Psychological Measurement, 2012
The Rasch rating (or partial credit) model is a widely applied item response model that is used to model ordinal observed variables that are assumed to collectively reflect a common latent variable. In the application of the model there is considerable controversy surrounding the assessment of fit. This controversy is most notable when the set of…
Descriptors: Item Response Theory, Models, Computation, Classification