1. An introduction to categorical data analysis;Agresti,2019
2. Lernen und komplexes Problemlösen: Ein Beitrag zur Konstruktvalidierung von Lerntests [learning and complex problem solving: A contribution to the construct validation of learning tests];Beckmann,1994
3. Analyzing the reliability of multidimensional measures: An example from intelligence research;Brunner;Educational and Psychological Measurement,2005
4. The development and assessment of problem solving in 21st-century schools;Csapó,2017
5. On the difficulties people have in dealing with complexity;Dörner;Simulation & Games,1980