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


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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