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Detecting DIF for Polytomously Scored Items: An Adaptation of the SIBTEST Procedure
Abstract
Shealy and Stout (1993) proposed a DIF detection procedure called SIBTEST and demonstrated its utility with both simulated and real data sets'. Current versions of SIBTEST can be used only for dichotomous items. In this article, an extension to handle polytomous items is developed. Two simulation studies are presented which compare the modified SIBTEST procedure with the Mantel and standardized mean difference (SMD) procedures. The first study compares the procedures under conditions in which the Mantel and SMD procedures have been shown to perform well (Zwick, Donoghue, & Grima, 1993). Results of Study I suggest that SIBTEST performed reasonably well, but that the Mantel and SMD procedures performed slightly better. The second study uses data simulated under conditions in which observed‐score DIF methods for dichotomous items have not performed well. The results of Study 2 indicate that under these conditions the modified SIBTEST procedure provides better control of impact‐induced Type I error inflation than the other procedures.
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Citations
Cites
A Rasch model for partial credit scoring
Masters, G. N. (1982) · Psychometrika · doi:10.1007/bf02296272 · Cited by 3,782
Estimation of Latent Ability Using a Response Pattern of Graded Scores
Samejima, F. (1969) · Psychometrika · doi:10.1007/bf03372160 · Cited by 2,194
Cited by
Application of a Method of Estimating DIF for Polytomous Test Items
Camilli, G., & Congdon, P. (1999) · Journal of Educational and Behavioral Statistics · doi:10.2307/1165366 · Cited by 607
Item Response Theory: A Statistical Framework for Educational and Psychological Measurement
Chen, Y., Li, X., Liu, J., & Ying, Z. (2025) · Statistical Science · doi:10.1214/23-sts896 · Cited by 30
Clark, P. C., & LaHuis, D. M. (2012) · Organizational Research Methods · doi:10.1177/1094428111403815 · Cited by 21
Metadata
- Authors
- Chang, H., Mazzeo, J., & Roussos, L.
- Venue
- Journal of Educational Measurement
- Publisher
- Wiley
- Published
- 1996-09
- Volume
- 33
- Issue
- 3
- Pages
- 333-353
- ISSN
- 0022-0655 (ISSN-L)
- 1745-3984
- OpenAlex
- W2191097440
- Cited by
- 187
- References
- 2
- FWCI
- 14.84
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Detecting DIF for Polytomously Scored Items: An Adaptation of the SIBTEST Procedure. https://app.cochat.ai/papers/10.1111/j.1745-3984.1996.tb00496.x
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- Chang, H., Mazzeo, J., & Roussos, L. (1996). Detecting DIF for Polytomously Scored Items: An Adaptation of the SIBTEST Procedure. Journal of Educational Measurement. https://doi.org/10.1111/j.1745-3984.1996.tb00496.x
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