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Related Experiment Videos

Counterfactual and prefactual conditionals.

Ruth M J Byrne1, Suzanne M Egan

  • 1Department of Psychology, Trinity College, Dublin University, Ireland. rmbyrne@tcd.ie

Canadian Journal of Experimental Psychology = Revue Canadienne De Psychologie Experimentale
|August 3, 2004
PubMed
Summary

People understand future "what if" scenarios, called prefactuals, by focusing on a single imagined possibility. This contrasts with past counterfactuals, which require considering two scenarios.

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How people think about the truth of hypothetical impossibilities.

Memory & cognition·2023

Area of Science:

  • Cognitive Psychology
  • Linguistics
  • Philosophy of Mind

Background:

  • Human reasoning involves evaluating hypothetical situations.
  • Distinguishing between future prefactuals and past counterfactuals is crucial for understanding conditional statements.
  • Previous research has explored the mental models underlying counterfactual reasoning.

Purpose of the Study:

  • To investigate how individuals reason about prefactual possibilities.
  • To determine the implications, consistent possibilities, and inferences associated with prefactuals.
  • To compare prefactual reasoning with existing models of counterfactual reasoning.

Main Methods:

  • Three experiments were conducted to examine prefactual reasoning.
  • Participants were asked to judge the implications, consistent possibilities, and inferences of prefactual statements.

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  • Data analysis focused on identifying patterns in how people interpret hypothetical future events.

    • Main Results:

    • Reasoners consistently focus on a single possibility when processing prefactuals.
    • This single-possibility model differs from the dual-possibility model often used for counterfactuals.
    • Experimental results support a unified cognitive mechanism for evaluating future-oriented hypotheticals.

    Conclusions:

    • Understanding prefactuals involves maintaining a single mental representation of the hypothetical future.
    • This finding offers new insights into the cognitive architecture of conditional reasoning.
    • The study highlights the distinct cognitive processes involved in reasoning about future versus past possibilities.