A Comparison of Logistic Regression Models for DIF Detection in Polytomous Items: The Effect of Small Sample Sizes and Non-Normality of Ability Distributions

Yasemin KAYA; Walter L. LEİTE; M. David MİLLER

doi:https://doi.org/10.21449/ijate.239563

Makale detayları

A Comparison of Logistic Regression Models for DIF Detection in Polytomous Items: The Effect of Small Sample Sizes and Non-Normality of Ability Distributions

Yazarlar:

Yasemin KAYA | Walter L. LEİTE | M. David MİLLER

Yayıncı:

İzzet KARA

Ana Başlıklar:

Eğitim

Dergi:

International Journal of Assessment Tools in Education 2015 Vol.2 Issue 1, pp.22-39

Belge Tipi:

Makale

Yayın Tarihi:

7/2016

Belge Dili:

İngilizce

Document ID (Org No.):

2000718774

Sıklık:

Üç Aylık

eISSN:

2148-7456

DOI:

https://doi.org/10.21449/ijate.239563

Özet:

 


This study investigated the effectiveness of logistic regression models to detect uniform and non-uniform DIF in polytomous items across small sample sizes and non-normality of ability distributions. A simulation study was used to compare three logistic regression models, which were the cumulative logits model, the continuation ratio model, and the adjacent categories model. The results revealed that logistic regression was a powerful method to detect DIF in polytomous items, but not useful to distinguish the type of DIF. Continuation ratio model worked best to detect uniform DIF, but the cumulative logits model gave more acceptable type I error results. As sample size increased, type I errors increased at cumulative logits model results. Skewness of ability distributions reduced power of logistic regression to detect non-uniform DIF. Small sample sizes reduced power of logistic regression.

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Makale detayları

A Comparison of Logistic Regression Models for DIF Detection in Polytomous Items: The Effect of Small Sample Sizes and Non-Normality of Ability Distributions

Yazarlar: Yasemin KAYA | Walter L. LEİTE | M. David MİLLER

Yayıncı: İzzet KARA

Ana Başlıklar: Eğitim

Dergi: International Journal of Assessment Tools in Education 2015 Vol.2 Issue 1, pp.22-39

Belge Tipi: Makale

Yayın Tarihi: 7/2016

Belge Dili: İngilizce

Document ID (Org No.): 2000718774

Sıklık: Üç Aylık

eISSN: 2148-7456

DOI: https://doi.org/10.21449/ijate.239563

Sayı

Yazarlar:

Yasemin KAYA | Walter L. LEİTE | M. David MİLLER

Yayıncı:

İzzet KARA

Ana Başlıklar:

Eğitim

Dergi:

International Journal of Assessment Tools in Education 2015 Vol.2 Issue 1, pp.22-39

Belge Tipi:

Makale

Yayın Tarihi:

7/2016

Belge Dili:

İngilizce

Document ID (Org No.):

2000718774

Sıklık:

Üç Aylık

eISSN:

2148-7456

DOI:

https://doi.org/10.21449/ijate.239563