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Smits, Iris A. M.; Timmerman, Marieke E.; Meijer, Rob R. – Applied Psychological Measurement, 2012
The assessment of the number of dimensions and the dimensionality structure of questionnaire data is important in scale evaluation. In this study, the authors evaluate two dimensionality assessment procedures in the context of Mokken scale analysis (MSA), using a so-called fixed lowerbound. The comparative simulation study, covering various…
Descriptors: Simulation, Measures (Individuals), Program Effectiveness, Item Response Theory
Glas, Cees A. W.; Meijer, Rob R. – 2001
A Bayesian approach to the evaluation of person fit in item response theory (IRT) models is presented. In a posterior predictive check, the observed value on a discrepancy variable is positioned in its posterior distribution. In a Bayesian framework, a Markov Chain Monte Carlo procedure can be used to generate samples of the posterior distribution…
Descriptors: Bayesian Statistics, Item Response Theory, Markov Processes, Models