GGUM: An R Package for Fitting the Generalized Graded Unfolding Model
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DOI: 10.1177/0146621618772290
Abstract: In this article, the newly created GGUM R package is presented. This package finally brings the generalized graded unfolding model (GGUM) to the front stage for practitioners and researchers. It expands the possibilities of fitting… read more here.
Keywords: package; generalized graded; ggum package; unfolding model ... See more keywords
Bayesian Approaches for Detecting Differential Item Functioning Using the Generalized Graded Unfolding Model
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DOI: 10.1177/01466216211066606
Abstract: Differential item functioning (DIF) analysis is one of the most important applications of item response theory (IRT) in psychological assessment. This study examined the performance of two Bayesian DIF methods, Bayes factor (BF) and deviance… read more here.
Keywords: differential item; unfolding model; model; graded unfolding ... See more keywords