[XS-DIF: program for analysis of Differential Item Functioning in Excel].
XS-DIF is a program for detection of Differential Item Functioning (DIF) using Item Response Theory (IRT). It calculates Lords Chi-Square, Raju's Signed Area and Unsigned Area, and Kim and Cohen's Closed-interval signed area and Closed-interval unsigned area. XS-DIF was designed to be executed in Excel 2000 and it has a capacity of analysis of up to 100 items. It is useful to support data analysis of research projects and in detection and teaching processes in DIF.
Ordóñez
Xavier G
XG
Universidad Complutense de Madrid, Spain. xavor@edu.ucm.es
Romero
Sonia J
SJ
D006801:Humans; D008960:Models, Psychological; D011582:Psychological Theory; D011584:Psychology / Q000379:methods