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Addressing Score Bias and Differential Item Functioning Due to Individual Differences in Response Style
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Bolt, Daniel M.; Johnson, Timothy R. – Applied Psychological Measurement, 2009
A multidimensional item response theory model that accounts for response style factors is presented. The model, a multidimensional extension of Bock's nominal response model, is shown to allow for the study and control of response style effects in ordered rating scale data so as to reduce bias in measurement of the intended trait. In the current…
Descriptors: Response Style (Tests), Rating Scales, Item Response Theory, Individual Differences