Methodology Review: Evaluating Person Fit

Meijer, Rob R. and Sijtsma, Klaas (2001) Methodology Review: Evaluating Person Fit. Applied Psychological Measurement, 25 (2). pp. 107-135. ISSN 0146-6216

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Abstract:	Person-fit methods based on classical test theory-and item response theory (IRT), and methods investigating particular types of response behavior on tests, are examined. Similarities and differences among person-fit methods and their advantages and disadvantages are discussed. Sound person-fit methods have been derived for the Rasch model. For other IRT models, the empirical and theoretical distributions differ for most person-fit statistics when used with short and moderate length tests. The detection rate of person-fit statistics depends on the type of misfitting item-score patterns, test length, and trait levels. The usefulness of person-fit statistics for improving measurement depends on the application.
Item Type:	Article
Copyright:	© 2001 Sage
Research Group:	Research Methodology, Measurement and Data Analysis (OMD)
Link to this item:	http://purl.utwente.nl/publications/60191
Official URL:	http://dx.doi.org/10.1177/01466210122031957
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