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Updated: Aug 22, 2026

Exploring the Role of Deontic Reasoning and World Knowledge in Wason´s Selection Task
Published on: July 22, 2025
Logical reasoning and probabilities: a comprehensive test of Oaksford And Chater (2001)
Klaus Oberauer1, Andrea Weidenfeld, Robin Hörnig
1Department of Psychology, University of Potsdam, Potsdam, Germany. ko@rz.uni-potsdam.de
Abstract:
We report two experiments testing a central prediction of the probabilistic account of reasoning provided by Oaksford and Chater (2001): Acceptance of standard conditional inferences, card choices in the Wason selection task, and quantifiers chosen for conclusions from syllogisms should vary as a function of the frequency of the concepts involved. Frequency was manipulated by a probability-learning phase preceding the reasoning tasks to simulate natural sampling. The effects predicted by Oaksford and Chater (2001) were not obtained with any of the three paradigms.
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