@article {2292, title = {The Philosophical Aspects of IRT Equating: Modeling Drift to Evaluate Cohort Growth in Large-Scale Assessments}, journal = {Educational Measurement: Issues and Practice}, volume = {32}, number = {1}, year = {2013}, pages = {2{\textendash}14}, keywords = {cohort growth, construct-relevant drift, evaluation of scale drift, philosophical aspects of IRT equating}, issn = {1745-3992}, doi = {10.1111/emip.12000}, url = {http://dx.doi.org/10.1111/emip.12000}, author = {Taherbhai, Husein and Seo, Daeryong} }