%0 Journal Article %J Educational Measurement: Issues and Practice %D 2013 %T The Philosophical Aspects of IRT Equating: Modeling Drift to Evaluate Cohort Growth in Large-Scale Assessments %A Taherbhai, Husein %A Seo, Daeryong %K cohort growth %K construct-relevant drift %K evaluation of scale drift %K philosophical aspects of IRT equating %B Educational Measurement: Issues and Practice %V 32 %P 2–14 %U http://dx.doi.org/10.1111/emip.12000 %R 10.1111/emip.12000