Research Article

Determining Differential Item Functioning with the Mixture Item Response Theory

Volume: 18 Number: 74 March 20, 2018
TR EN

Determining Differential Item Functioning with the Mixture Item Response Theory

Abstract

Purpose: Studies in the literature have generally demonstrated that the causes of differential item functioning (DIF) are complex and not directly related to defined groups. The purpose of this study is to determine the DIF according to the mixture item response theory (MixIRT) model, based on the latent group approach, as well as the Mantel-Haenszel method, based on the observed group approach, compare the results, and determine the possible causes of the DIF. Research Methods: As this study is contributing to the production of information to develop the theory, it is considered basic research. In accordance with the purposive sampling method, the research sample consisted of 1166 fourth-grade level students from Singapore, Kuwait, and Turkey who participated in the Trends in International Mathematics and Science Study mathematics application and took the sixth booklet. During the data analysis, the model that adapted the data according to MixIRT was determined. Then, the status of the items displaying DIF was determined according to the adaptive model. Findings: According to the MixIRT, the two latent class models fit best to the data. No significant difference by gender was observed in either class or any country. This finding suggests that the gender variable, which is frequently used as the observed group in DIF studies, should not be dealt with alone. Implications for Research and Practice: Since it is difficult to state whether an item is advantageous for a subgroup when DIF is determined in accordance with known groups, it is recommended to employ the latent class approach to determine DIF.

Keywords

References

  1. Camilli, G., & Shepard, L. A. (1994). MMSS: Methods for identifying biased test items. Thousand Oaks, CA: Sage.
  2. Cho, S. J., & Cohen, A. S. (2010). A multilevel mixture IRT model with an application to DIF. Journal of Educational and Behavioral Statistics, 35(3), 336-370. doi: 10.3102/1076998609353111.
  3. Choi, Y., Alexeev, N., & Cohen, A. S. (2015). Differential item functioning analysis using a mixture 3-parameter logistic model with a covariate on the TIMSS 2007 mathematics test. International Journal of Testing, 15(3), 239-253. doi: 10.1080/15305058.2015.1007241.
  4. Clark, S. L. (2010). Mixture modeling with behavioral data. Unpublished doctoral dissertation. University of California, Los Angeles.
  5. Clauser, B. E., & Mazor, K. M. (1998). Using statistical procedures to identify differentially functioning test items. Educational Measurement: Issues and Practice, 17(1), 31-44. doi: 10.1111/j.1745-3992.1998.tb00619.x
  6. Cohen, A. S., & Bolt, D. M. (2005). A mixture model analysis of differential item functioning. Journal of Educational Measurement, 42(2), 133–148. doi: 10.1111/j.1745-3984.2005.00007.
  7. Cohen, A. S., Gregg, N., & Deng, M. (2005). The role of extended time and item content on a high-stakes mathematics test. Learning Disabilities Research & Practice, 20(4), 225–233. doi: 10.1111/j.1540-5826.2005.00138.x.
  8. De Ayala, R. J. (2009). The theory and practice of item response theory. New York, NY: Guilford Press.

Details

Primary Language

English

Subjects

-

Journal Section

Research Article

Publication Date

March 20, 2018

Submission Date

March 20, 2018

Acceptance Date

-

Published in Issue

Year 2018 Volume: 18 Number: 74

APA
Yalcın, S. (2018). Determining Differential Item Functioning with the Mixture Item Response Theory. Eurasian Journal of Educational Research, 18(74), 187-206. https://izlik.org/JA95KM82LR
AMA
1.Yalcın S. Determining Differential Item Functioning with the Mixture Item Response Theory. Eurasian Journal of Educational Research. 2018;18(74):187-206. https://izlik.org/JA95KM82LR
Chicago
Yalcın, Seher. 2018. “Determining Differential Item Functioning With the Mixture Item Response Theory”. Eurasian Journal of Educational Research 18 (74): 187-206. https://izlik.org/JA95KM82LR.
EndNote
Yalcın S (March 1, 2018) Determining Differential Item Functioning with the Mixture Item Response Theory. Eurasian Journal of Educational Research 18 74 187–206.
IEEE
[1]S. Yalcın, “Determining Differential Item Functioning with the Mixture Item Response Theory”, Eurasian Journal of Educational Research, vol. 18, no. 74, pp. 187–206, Mar. 2018, [Online]. Available: https://izlik.org/JA95KM82LR
ISNAD
Yalcın, Seher. “Determining Differential Item Functioning With the Mixture Item Response Theory”. Eurasian Journal of Educational Research 18/74 (March 1, 2018): 187-206. https://izlik.org/JA95KM82LR.
JAMA
1.Yalcın S. Determining Differential Item Functioning with the Mixture Item Response Theory. Eurasian Journal of Educational Research. 2018;18:187–206.
MLA
Yalcın, Seher. “Determining Differential Item Functioning With the Mixture Item Response Theory”. Eurasian Journal of Educational Research, vol. 18, no. 74, Mar. 2018, pp. 187-06, https://izlik.org/JA95KM82LR.
Vancouver
1.Seher Yalcın. Determining Differential Item Functioning with the Mixture Item Response Theory. Eurasian Journal of Educational Research [Internet]. 2018 Mar. 1;18(74):187-206. Available from: https://izlik.org/JA95KM82LR