Polytomous Nonlinear Mixed Model for Item Analysis

Name: Polytomous Nonlinear Mixed Model for Item Analysis
Brand: VDM Verlag
SKU: 9783639184310
Price: 273.81 RON
Availability: InStock

Autor: Seon-Hi Shin

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Editura: VDM Verlag

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The study presented the formulation of an IRT model for polytomously scored Likert-type data under t...

Informații despre carte

Autor

Seon-Hi Shin

Limbă

engleză

Legare

Carte - Carte broșată

Publicat

2009

Pagini

112

EAN

9783639184310

ISBN

3639184319

Enbook ID

06826605

Editura

VDM Verlag

Greutate

177

Dimensiuni

152 x 229 x 7

Descriere completă

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 functioning analysis and a regression-type model with a person-level covariate. Using simulations, the accuracy of SAS PROC NLMIXED in estimating the latent trait and the item parameters for the PNLMM was examined through eight common indicators. The correlations between PROC NLMIXED and PARSCALE estimates for model parameters were also evaluated. The results and their educational importance were discussed.

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Polytomous Nonlinear Mixed Model for Item Analysis

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