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von Davier, Matthias; Xu, Xueli; Carstensen, Claus H. – Psychometrika, 2011
The aim of the research presented here is the use of extensions of longitudinal item response theory (IRT) models in the analysis and comparison of group-specific growth in large-scale assessments of educational outcomes. A general discrete latent variable model was used to specify and compare two types of multidimensional item-response-theory…
Descriptors: Educational Objectives, Outcomes of Education, Measures (Individuals), Item Response Theory