Item Response Theory (IRT) provides a robust statistical framework that links latent traits—such as ability, attitude or personality—to observable outcomes on tests or surveys. This approach has been ...
In this study we examined procedures for assessing model-data fit of item response theory (IRT) models for mixed format data. The model fit indices used in this study include PARSCALE's G², Orlando ...
Medical Care, Vol. 45, No. 5, Supplement 1: The Patient-Reported Outcomes Measurement Information System (PROMIS): Overview and Developmental Work, 2004–2006 (May, 2007), pp. S32-S38 (7 pages) ...
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