ERIC Number: EJ1224288
Record Type: Journal
Publication Date: 2019
Pages: 13
Abstractor: As Provided
ISBN: N/A
ISSN: EISSN-1554-5210
EISSN: N/A
Available Date: N/A
Investigating Differential Item Functioning in DINA Model
Sünbül, Seçil Ömür
International Journal of Progressive Education, v15 n4 p174-186 2019
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.
International Association of Educators. Available from: PEN Academic Publishing. e-mail: secretary@inased.org; e-mail: info@penpublishing.net; Web site: http://www.inased.org/ijpe.htm; Web site: http://ijpe.penpublishing.net/
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A