Visual bias of diagram in logical reasoning

Yuri Sato, Yuichiro Wajima, Kazuhiro Ueda

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNpeer-review


We analyze the information discrepancy between diagram- matic representations and logical reasoning, which we call visual biases in diagrammatic reasoning. Diagrammatic repre- sentations contain semantic information, which is based on the topological configurations of objects, and visual information, such as geometric location. In principle, visual information is unnecessary to the validity of logical reasoning. However, people are so sensitive to visual information such as size and shape in diagrams that they occasionally do not ignore irrele- vant information. This phenomenon leads to mistakes in logical reasoning. We addressed this issue in the present study. In Experiment 1, we assessed whether and how a visual bias of external diagrams affects reasoning performance. We asked participants to directly manipulate size-fixed (Euler) diagrams while solving syllogistic tasks. In Experiment 2, we tested whether size-scalable diagrams were able to reduce a visual bias of diagrams in logical reasoning.
Original languageEnglish
Title of host publicationProceedings of the 36th Annual Conference of the Cognitive Science Society
Place of PublicationAustin, TX
PublisherCognitive Science Society
Number of pages6
Publication statusPublished - 1 Jan 2014
EventProceedings of the 36th Annual Conference of the Cognitive Science Society - Quebec City, Canada, 2014
Duration: 1 Jan 2014 → …


ConferenceProceedings of the 36th Annual Conference of the Cognitive Science Society
Period1/01/14 → …


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