%0 Journal Article %T Comparing Multiunidimensional and Unidimensional Item Response Theory Models %A Sheng, Yanyan %A Wikle, Christopher K. %J Educational and Psychological Measurement %V 67 %N 6 %P 899-919 %@ 0013-1644 %D 2007-12-01 %I Sage Publications %~ DeepDyve