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Related Experiment Video

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Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods
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Biased confabulation in risky choice.

Alice Mason1, Christopher R Madan2, Nick Simonsen2

  • 1University of Warwick, UK.

Cognition
|August 12, 2022
PubMed
Summary
This summary is machine-generated.

People making risky decisions rely on memory, but recall abstract rules, not specific events. This study shows memory overweights extreme outcomes, influencing choices.

Keywords:
Decisions-from-experienceEpisodic memoryExtreme outcomesFree recallRisky choice

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Decision Science

Background:

  • Risky decision-making relies on memory of past experiences.
  • Understanding whether memory recall is specific (episodic) or generalized (gist) is crucial for decision-making research.

Purpose of the Study:

  • To investigate the precision of memories supporting decisions from experience.
  • To determine if people recall specific past episodes or abstract rules when making risky choices.

Main Methods:

  • Three pre-registered experiments involving risky choice tasks with continuous outcome ranges.
  • Assessment of memory precision for experienced outcomes after participants made preferential and evaluation choices.

Main Results:

  • Participants exhibited increased risk-seeking for high-value options, overweighing extreme outcomes.
  • Memory recall was imprecise, with confabulated outcomes biased towards experienced extreme ranges.
  • Decision biases in preferential tasks stemmed from overweighting extreme memory outcomes.

Conclusions:

  • Memory influences risky decisions through gist, not direct recall of specific instances.
  • The edges of outcome distributions significantly impact memory encoding and recall.
  • Cognitive processes overweight extreme outcomes in memory, shaping decision-making biases.