Testing the Rasch Model

摘要: In this chapter, it is shown that the problem of evaluating model fit can be solved within framework general multinomial model, and how tests for adapted to Rasch model. Four types are considered: generalized Pearson tests, likelihood ratio Wald tests. The statistics presented not only support purpose a global overall test, but also provide information with respect specific violations, such as violation sufficiency sum score, strictly monotone increasing parallel item response functions, unidimensionality, differential functioning.