LIBROS DEL AUTOR: seon hi shin

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  • A Polytomous Nonlinear Mixed Model for Item Analysis
    Seon-Hi Shin
    The study presented the formulation of an IRT model for polytomously scored Likert-type data under the framework of the nonlinear mixed model. The formulated polytomous nonlinear mixed model (PNLMM) was demonstrated to be equivalent to Muraki’s rating scale model (1990). Due to the flexibility of the framework, the PNLMM was easily extended into a model for differential item fu...
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