EXAMINING THE RELATIONSHIP BETWEEN DIFFERENTIAL ITEM FUNCTIONING AND ITEM DIFFICULTY

Examining Differential Item Functioning Due to Item Difficulty and Alternative Attractiveness

A method for analyzing test item responses is proposed to examine differential item functioning (DIF) in multiple-choice items through a combination of the usual notion of DIF, for correct/incorrect responses and information about DIF contained in each of the alternatives. The proposed method uses incomplete latent class models to examine whether DIF is caused by the attractiveness of the alter...

Examining bias in the impulsive sensation seeking (ImpSS) Scale using Differential Item Functioning (DIF) ¬タモ An item response analysis

Impulsive sensation seeking, an important index of the disinhibited pursuit of novelty with minimal concern for potential negative consequences, varies with important health behaviors like drug use and unsafe sex. Previous work reveals associations between impulsive sensation seeking and gender, age, ethnicity and education. Links to these sociodemographic variables should arise from actual dif...

A 37-item shoulder functional status item pool had negligible differential item functioning.

OBJECTIVE Measures of shoulder function may differ by dominance of affected shoulder, surgical history, gender, or race. We present a technique for determining whether observed differences in function between groups are due to biased test items or real differences in function. STUDY DESIGN AND SETTING Four hundred patients who were receiving rehabilitation for a variety of shoulder impairment...

Differential 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...

9. Differential Item Functioning In Licensure Tests