Uncertainty in Latent Trait Models.
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ABSTRACT:
SUBMITTER: Tutz G
PROVIDER: S-EPMC7383692 | biostudies-literature | 2020 Sep
REPOSITORIES: biostudies-literature
Publications
Uncertainty in Latent Trait Models.
Tutz Gerhard G Schauberger Gunther G
Applied psychological measurement 20200526 6
A model that extends the Rasch model and the Partial Credit Model to account for subject-specific uncertainty when responding to items is proposed. It is demonstrated that ignoring the subject-specific uncertainty may yield biased estimates of model parameters. In the extended version of the model, uncertainty and the underlying trait are linked to explanatory variables. The parameterization allows to identify subgroups that differ in uncertainty and the underlying trait. The modeling approach i ...[more]
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