%0 Journal Article %T Assessment of Differential Item Functioning in Testlet-Based Items Using the Rasch Testlet Model %A Wang, Wen-Chung %A Wilson, Mark %J Educational and Psychological Measurement %V 65 %N 4 %P 549-576 %@ 0013-1644 %D 2005-08-01 %I Sage Publications %~ DeepDyve