Two Implications and Dual-Process Theories of Reasoning

Angelina Bobrova, Ahti Veikko Pietarinen*

*Corresponding author for this work

    Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

    1 Citation (Scopus)


    Dual-process theories of reasoning assume a fundamental difference between two cognitive systems: fast and intuitive System 1, and slow and rational System 2, grounded on rules of logical inference. Peirce’s diagrammatic logic challenges the dichotomy. Both systems are based on similar inferential connections, but the former draws its conclusions as modelled in positive implicational fragment of the latter. This logical connection between two systems explains empirical results from Wason’s card selection task without appeal to confirmation bias.

    Original languageEnglish
    Title of host publicationDiagrammatic Representation and Inference
    Subtitle of host publication11th International Conference, Diagrams 2020, Tallinn, Estonia, August 24–28, 2020, Proceedings
    EditorsAhti-Veikko Pietarinen, Peter Chapman, Leonie Bosveld-de Smet, Valeria Giardino, James Corter, Sven Linker
    PublisherSpringer Cham
    Number of pages5
    ISBN (Electronic)9783030542498
    ISBN (Print)9783030542481
    Publication statusPublished - 29 Jul 2020
    Event11th International Conference on the Theory and Application of Diagrams, Diagrams 2020 - Tallinn, Estonia
    Duration: 24 Aug 202028 Aug 2020

    Publication series

    NameLecture Notes in Computer Science
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349
    NameLecture Notes in Artificial Intelligence
    NameDiagrams: International Conference on Theory and Application of Diagrams


    Conference11th International Conference on the Theory and Application of Diagrams, Diagrams 2020
    Internet address

    Scopus Subject Areas

    • Theoretical Computer Science
    • Computer Science(all)

    User-Defined Keywords

    • Cognition
    • Diagrammatic logic
    • Dual-processes
    • Logic
    • Peirce’s graphs
    • Positive implication
    • Wason card selection task


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