[en] The purpose of this talk is to briefly introduce the R package difR to identify differential item functioning (DIF) among dichotomously scored items. The presentation is organized in three points. First, the general framework of DIF is outlined and the most known methods are presented succinctly. Second, the main functionalities of the difR package are described. Third, a practical application of difR is performed by a “live” analysis of a real example with several DIF methods. Future developments and objectives are discussed to conclude the talk.
The difR package was jointly developed by Sébastien Béland (Université du Québec à Montréal, Canada), Francis Tuerlinckx (K. U. Leuven, Belgium) and Paul De Boeck (University of Amsterdam, The Netherlands).
Disciplines :
Mathematics
Author, co-author :
Magis, David ; Université de Liège - ULiège > Département de mathématique > Statistique mathématique
Language :
English
Title :
The difR package, a toolbox for the identification dichotomous differential item functioning
Alternative titles :
[fr] Le package difR, un outil pour l'identification du fonctionnement différentiel d'items dichotomiques
Publication date :
25 February 2011
Event name :
3rd International Workshop on Psychometric Computing (PSYCHOCO)
