96 citations · 239 across the 22 of their papers we have counts for
4 papers · 2 filters
Tree-Structured Clustering in Fixed Effects Models
Moritz Berger, Gerhard Tutz
Fixed effects models are very flexible because they do not make assumptions on the distribution of effects and can also be used if the heterogeneity component is correlated with ex…
Detection of Uniform and Non-Uniform Differential Item Functioning by Item Focussed Trees
Moritz Berger, Gerhard Tutz
Detection of differential item functioning by use of the logistic modelling approach has a long tradition. One big advantage of the approach is that it can be used to investigate n…
Tree-Structured Modelling of Categorical Predictors in Regression
Gerhard Tutz, Moritz Berger
Generalized linear and additive models are very efficient regression tools but the selection of relevant terms becomes difficult if higher order interactions are needed. In contras…
Item focussed Trees for the Identification of Items in Differential Item Functioning
Gerhard Tutz, Moritz Berger
A new method for the identification of differential item functioning (DIF) by using recursive partitioning techniques is proposed. We assume an extension of the Rasch model that al…