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- Title
Detecting Differential Item Functioning in 2PL Multistage Assessments.
- Authors
Debelak, Rudolf; Appelbaum, Sebastian; Debeer, Dries; Tomasik, Martin J.
- Abstract
The detection of differential item functioning is crucial for the psychometric evaluation of multistage tests. This paper discusses five approaches presented in the literature: logistic regression, SIBTEST, analytical score-based tests, bootstrap score-based tests, and permutation score-based tests. First, using an simulation study inspired by a real-life large-scale educational assessment, we compare the five approaches with respect to their type I error rate and their statistical power. Then, we present an application to an empirical data set. We find that all approaches show type I error rates close to the nominal alpha level. Furthermore, all approaches are shown to be sensitive to uniform and non-uniform DIF effects, with the score-based tests showing the highest power.
- Subjects
ITEM response theory; STATISTICAL power analysis; EDUCATIONAL evaluation; EDUCATIONAL tests &; measurements; ERROR rates
- Publication
Psych, 2023, Vol 5, Issue 2, p461
- ISSN
2624-8611
- Publication type
Article
- DOI
10.3390/psych5020031