Title: Exploring the posterior of a hierarchical IRT model for item effects
Authors: Janssen, Rianne ×
De Boeck, Paul #
Issue Date: 2000
Publisher: Physica-Verlag
Series Title: Computational Statistics vol:15 issue:3 pages:421-442
Abstract: A one-way ANOVA structure is imposed o the item difficulty and the item discrimination parameter of a two-parameter hierarchical IRT model for item effects. Bayesian estimation of the model is illustrated for the Metropolis-Hastings within Gibbs and the data augmented Gibbs procedure. The posterior of the ierarchical IRT model is explored with respect to the location of parameters and the uncertainty of these parameter estimates. The posterior correlations among parameters are shown to be due to trade-off effects among parameters either on the same parameter scales or on different parameter scales.
Description: Afdeling Psychodiagnostiek en psychologische begeleiding.
ISSN: 0943-4062
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Onderzoeksgroep hogere cognitie en individuele verschillen (-)
× corresponding author
# (joint) last author

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