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stat.AP2012
Joint Assessment of the Differential Item Functioning and Latent Trait Dimensionality of Students' National Tests
Michela Gnaldi, Francesco Bartolucci, Silvia Bacci
Within the educational context, students' assessment tests are routinely validated through Item Response Theory (IRT) models which assume unidimensionality and absence of Different…
stat.AP2012★ 2 cited
MultiLCIRT: An R package for multidimensional latent class item response models
Francesco Bartolucci, Silvia Bacci, Michela Gnaldi
We illustrate a class of Item Response Theory (IRT) models for binary and ordinal polythomous items and we describe an R package for dealing with these models, which is named Multi…