Investigating Differential Item Functioning in DINA Model

Seçil Ömür Sünbül

doi:https://doi.org/10.29329/ijpe.2019.203.13

Original article | International Journal of Progressive Education 2019, Vol. 15(4) 174-186

Investigating Differential Item Functioning in DINA Model

Seçil Ömür Sünbül

pp. 174 - 186 | DOI: https://doi.org/10.29329/ijpe.2019.203.13 | Manu. Number: MANU-1812-28-0002.R1

Published online: August 02, 2019 | Number of Views: 203 | Number of Download: 820

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Abstract

In this study, it is aimed to investigate the effects of various factors on the performance of the methods used in the determination of differential item functioning (DIF) in the DINA model included in the Cognitive Diagnosis Models. The current study is limited with Logistic Regression and Wald test methods which were used to determine the differential item functioning in DINA model. The Type I error and power rates of these methods in certain conditions were investigated to evaluate their performances. In the simulation study for the Type I error rates, four variables were manipulated: sample sizes, the number of attributes, correlations between attributes and reference group s and g parameter values. In the determination of the power rates of the methods, additionally, the variables that were manipulated in the Type I error study, DIF sizes and percentages of DIF items were manipulated, too. As a result, it was observed that especially in all cases where reference group’ s and g parameter values are low, both methods yielded a good control of Type I error rates. In addition, according to the results, it was observed that both DIF size and sample size affect the power rates of both methods.

Keywords: DINA model, differential item functioning, Wald test, logistic regression

How to Cite this Article?

APA 6th edition
Sunbul, S.O. (2019). Investigating Differential Item Functioning in DINA Model . International Journal of Progressive Education, 15(4), 174-186. doi: 10.29329/ijpe.2019.203.13

Harvard
Sunbul, S. (2019). Investigating Differential Item Functioning in DINA Model . International Journal of Progressive Education, 15(4), pp. 174-186.

Chicago 16th edition
Sunbul, Secil Omur (2019). "Investigating Differential Item Functioning in DINA Model ". International Journal of Progressive Education 15 (4):174-186. doi:10.29329/ijpe.2019.203.13.

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