To what extent are item discrimination values realistic? A new index for two-dimensional structures
Yükleniyor...
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ijate-Int Journal Assessment Tools Education
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Most researchers investigate the corrected item-total correlation of items when analyzing item discrimination in multi-dimensional structures under the Classical Test Theory, which might lead to underestimating item discrimination, thereby removing items from the test. Researchers might investigate the corrected item-total correlation with the factors to which that item belongs; however, getting a general overview of the entire test is impossible. Based on this problem, this study aims to recommend a new index to investigate item discrimination in two-dimensional structures through a Monte Carlo simulation. The new item discrimination index is evaluated by identifying sample size, item discrimination value, inter-factor correlation, and the number of categories. Based upon the results of the study it can be claimed that the proposed item discrimination index proves acceptable performance for two-dimensional structures. Accordingly, using this new item discrimination index could be recommended to researchers when investigating item discrimination in two-dimensional structures.
Açıklama
Anahtar Kelimeler
Item Discrimination, Multi-Dimensional, Structures, Classical Test Theory, Corrected Item-Total, Correlation
Kaynak
International Journal of Assessment Tools in Education
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
9
Sayı
3
Künye
Kılıç, A. F. & Uysal, İ. (2022). To what extent are item discrimination values realistic? A new index for two-dimensional structures . International Journal of Assessment Tools in Education , 9 (3) , 728-740 . DOI: 10.21449/ijate.1098757
