A Generalized Logistic Regression Procedure to Detect Differential Item Functioning Among Multiple Groups.
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| Title: | A Generalized Logistic Regression Procedure to Detect Differential Item Functioning Among Multiple Groups. |
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| Authors: | Magis, David (AUTHOR), Raîche, Gilles (AUTHOR), Béland, Sébastien (AUTHOR), Gérard, Paul (AUTHOR) |
| Source: | International Journal of Testing. Oct-Dec2011, Vol. 11 Issue 4, p365-386. 22p. |
| Subjects: | Logistic regression analysis, Language ability testing, Psychometrics, Groups, Regression analysis |
| Abstract: | We present an extension of the logistic regression procedure to identify dichotomous differential item functioning (DIF) in the presence of more than two groups of respondents. Starting from the usual framework of a single focal group, we propose a general approach to estimate the item response functions in each group and to test for the presence of uniform DIF, nonuniform DIF, or both. This generalized procedure is compared to other existing DIF methods for multiple groups with a real data set on language skill assessment. Emphasis is put on the flexibility, completeness, and computational easiness of the generalized method. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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