Quantitative applications in the social sciences ;
no. 07-144
Includes bibliographical references (pages 95-102) and index.
Introduction -- Nominal response model -- Polytomous Rasch models -- Samejima models -- Model selection.
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This volume provides an introduction to the range of polytomous models available within item response theory. It begins by outlining the distinction between the two major types of polytomous IRT models, then goes on to describe them in detail.