DIF: A Computer Program for the Analysis of Differential Item Performance
Eckhard Klieme, Heinrich Stumpf · Educational and Psychological Measurement · 1991
A FORTRAN 77 program is presented which performs analyses of differential item performance in psychometric tests. The program performs the Mantel-Haenszel procedure and computes various additional classical indices of differential item functioning (including discrimination indices) as well as associated effect size measures.