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Natesan, Prathiba; Limbers, Christine; Varni, James W. – Educational and Psychological Measurement, 2010
The present study presents the formulation of graded response models in the multilevel framework (as nonlinear mixed models) and demonstrates their use in estimating item parameters and investigating the group-level effects for specific covariates using Bayesian estimation. The graded response multilevel model (GRMM) combines the formulation of…
Descriptors: Bayesian Statistics, Computation, Psychometrics, Item Response Theory