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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Polytomous IRT models and their usage in personality diagnostic
 Jelínek, Martin ; Květon, Petr ; Vobořil, Dalibor
The presented study describes basic types IRT (item response theory) models for polytomous items. Graded response model and its modifications, partial credit model, rating scale model, and nominal response model are discussed. The usage of graded response model and generalized partial credit model is illustrated on the example of Rosenberg’s self-esteemscale. Although these two models differ in their concept, the actual trait estimates (self-esteem) are basically the same.
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