Sources of Error in IRT Trait Estimation
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DOI: 10.1177/0146621617733955
Abstract: In item response theory (IRT), item response probabilities are a function of item characteristics and latent trait scores. Within an IRT framework, trait score misestimation results from (a) random error, (b) the trait score estimation… read more here.
Keywords: trait; estimation; item; trait estimation ... See more keywords
The Explanatory Generalized Graded Unfolding Model: Incorporating Collateral Information to Improve the Latent Trait Estimation Accuracy
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DOI: 10.1177/01466216211051717
Abstract: Collateral information has been used to address subpopulation heterogeneity and increase estimation accuracy in some large-scale cognitive assessments. The methodology that takes collateral information into account has not been developed and explored in published research… read more here.
Keywords: latent trait; collateral information; information; trait estimation ... See more keywords