Determining Differential Item Functioning with the Mixture Item Response Theory
نویسندگان
چکیده
منابع مشابه
Differential item functioning magnitude and impact measures from item response theory models.
Measures of magnitude and impact of differential item functioning (DIF) at the item and scale level, respectively are presented and reviewed in this paper. Most measures are based on item response theory models. Magnitude refers to item level effect sizes, whereas impact refers to differences between groups at the scale score level. Reviewed are magnitude measures based on group differences in ...
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BACKGROUND Four-factor structure of the two 8-item short forms of Child Perceptions Questionnaire CPQ11-14 (RSF:8 and ISF:8) has been confirmed. However, the sum scores are typically reported in practice as a proxy of Oral health-related Quality of Life (OHRQoL), which implied a unidimensional structure. This study first assessed the unidimensionality of 8-item short forms of CPQ11-14. Item res...
متن کاملInvestigating the Impact of Item Parameter Drift for Item Response Theory Models with Mixture Distributions
This study investigates the impact of item parameter drift (IPD) on parameter and ability estimation when the underlying measurement model fits a mixture distribution, thereby violating the item invariance property of unidimensional item response theory (IRT) models. An empirical study was conducted to demonstrate the occurrence of both IPD and an underlying mixture distribution using real-worl...
متن کاملDifferential Item Functioning Detection with Logistic Regression
résumé – Détection du fonctionnement différentiel d’items par régression logistique La régression logistique a été utilisée comme une méthode d’identification du DIF dans différents contextes. Certaines études ont montré que cette procédure peut être affectée par des variables comme le ratio des tailles entre groupes, la taille de l’échantillon, et qu’elle semble liée avec les gammes de difficu...
متن کاملRe-evaluating a vision-related quality of life questionnaire with item response theory (IRT) and differential item functioning (DIF) analyses
BACKGROUND For the Low Vision Quality Of Life questionnaire (LVQOL) it is unknown whether the psychometric properties are satisfactory when an item response theory (IRT) perspective is considered. This study evaluates some essential psychometric properties of the LVQOL questionnaire in an IRT model, and investigates differential item functioning (DIF). METHODS Cross-sectional data were used f...
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ژورنال
عنوان ژورنال: Eurasian Journal of Educational Research
سال: 2018
ISSN: 1302-597X
DOI: 10.14689/ejer.2018.74.10