Klaas Sijtsma

Commentaries on the Ten Most Highly Cited Psychometrika Articles from 1936 to the Present

Y. Takane, L. Hubert, W. Heiser, 2016, Psychometrika.

Inductive Reasoning in Third Grade: Intervention Promises and Constraints

Sijtsma, J. Hamers, Hamers, 1998, Contemporary educational psychology.