Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Hypothetical and certain inferences from conditional arguments read in texts.

Nicolas Campion1

  • 1University of Paris XI, LIMSI-CNRS, Orsay, France. Campion@limsi.fr

Journal of Experimental Psychology. Learning, Memory, and Cognition
|May 25, 2006
PubMed
Summary

Readers perceive logical deductions from conditional arguments as certain unless a weak cause is involved. Invalid inferences are seen as hypothetical, unless a strong cause justifies them, showing how causal knowledge influences reasoning.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Requirements for a maritime transition in line with the Paris Agreement.

iScience·2022
See all related articles

Area of Science:

  • Cognitive Psychology
  • Formal Logic
  • Linguistics

Background:

  • Understanding how individuals process conditional arguments is crucial for cognitive psychology.
  • Previous research suggests that logical reasoning can be influenced by pragmatic factors and background knowledge.
  • The role of causal knowledge in modulating the interpretation of conditional statements remains an active area of investigation.

Purpose of the Study:

  • To investigate how readers represent the certainty of deductions from conditional arguments.
  • To examine the influence of causal strength (weakly necessary vs. strongly sufficient causes) on logical inference representation.
  • To test the hypothesis that readers process conditional syntax as an asymmetric constraint, as proposed by the theory of natural logic.

Main Methods:

Related Experiment Videos

  • Three experiments were conducted using narrative texts with conditional arguments.
  • Participants were presented with affirmative and hypothetical probes following these texts.
  • Data analysis focused on how readers represented the certainty or hypothetical nature of specific logical inferences (modus ponens, affirming the consequent).

Main Results:

  • Modus ponens deductions were generally represented as certain, except when the antecedent was a weakly necessary cause.
  • Logically invalid inferences from affirming the consequent were typically represented as hypothetical, unless the consequent was a strongly sufficient cause.
  • These findings suggest that readers process conditional syntax asymmetrically, influenced by underlying causal knowledge.

Conclusions:

  • Readers' interpretation of conditional arguments is modulated by their underlying causal knowledge.
  • Causal knowledge can either discredit or warrant logical inferences, impacting their representation as certain or hypothetical.
  • The study provides evidence supporting the theory of natural logic, indicating that readers can represent formal deductions as hypothetical or certain based on contextual and causal factors.