Stella Bollmann

What can the Real World do for simulation studies? A comparison of exploratory methods

Moritz Heene, Helmut Küchenhoff, Markus Bühner, 2015 .

Item-Focused Trees for the Detection of Differential Item Functioning in Partial Credit Models

Gerhard Tutz, Moritz Berger, Stella Bollmann, 2016, Educational and psychological measurement.

Evaluation of a new k-means approach for exploratory clustering of items

Moritz Heene, Andreas Hölzl, Helmut Küchenhoff, 2015 .