The aim of this study is to indicate which one of the Classical Test Theory and Rasch model is providing more detailed statistical information in determining psychometric properties of mixed tests through comparing their ...

The aim of this study is to research whether or not the attitude items towards sciences in PISA 2015 student questionnaire including differential item functioning (DIF) in terms of language and culture. Generalized Mantel ...

The purpose of this study is to investigate the effects of number of response options on psychometric properties of Likert-type scale for used with children. Accordingly, 1092 2nd and 3rd grade children from 11 different ...