skip to main content skip to footer

Differential Item Functioning and the Mantel-Haenszel Procedure DIF IRT

Holland, Paul W.; Thayer, Dorothy T.
Publication Year:
Report Number:
RR-86-31, PSRTR-86-69
ETS Research Report
Document Type:
Page Count:
Subject/Key Words:
Differential Item Functioning (DIF), Item Analysis, Item Response Theory (IRT), Mantel-Haenszel Technique, Statistical Analysis, Test Bias


The Mantel-Haenszel procedure is a noniterative contingency table method for estimating and testing a common two-factor association parameter in a 2x2xk table. As such it may be used to study "item bias" or differential item functioning in two groups of examinees. This technique is discussed in this context and compared to other related techniques as well as to item response theory methods. (27pp.)

Read More