Logic brightens my day: Evidence for implicit sensitivity to logical validity

Dries Trippas*, Simon J. Handley, Michael F. Verde, Kinga Morsanyi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


A key assumption of dual process theory is that reasoning is an explicit, effortful, deliberative process. The present study offers evidence for an implicit, possibly intuitive component of reasoning. Participants were shown sentences embedded in logically valid or invalid arguments. Participants were not asked to reason but instead rated the sentences for liking (Experiment 1) and physical brightness (Experiments 2-3). Sentences that followed logically from preceding sentences were judged to be more likable and brighter. Two other factors thought to be linked to implicit processing-sentence believability and facial expression-had similar effects on liking and brightness ratings. The authors conclude that sensitivity to logical structure was implicit, occurring potentially automatically and outside of awareness. They discuss the results within a fluency misattribution framework and make reference to the literature on discourse comprehension.

Original languageEnglish
Pages (from-to)1448-1457
Number of pages10
JournalJournal of Experimental Psychology: Learning, Memory, and Cognition
Issue number9
Publication statusPublished - 1 Sept 2016
Externally publishedYes


  • Beliefs
  • Brightness
  • Dual process theory
  • Intuition
  • Logic


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