Browsing by Author "Lissitz, Robert W."
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Exploring the Full-Information Bifactor Model in Vertical ScalingWith Construct Shift
Li, Ying; Lissitz, Robert W. (SAGE, 2012)To address the lack of attention to construct shift in item response theory (IRT) vertical scaling, a multigroup, bifactor model was proposed to model the common dimension for all grades and the grade-specific dimensions. ...