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Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods
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Encoding Context Determines Risky Choice.

Christopher R Madan1, Marcia L Spetch2, Fernanda M D S Machado3

  • 1School of Psychology, University of Nottingham.

Psychological Science
|April 28, 2021
PubMed
Summary
This summary is machine-generated.

Context significantly impacts risky decision-making and memory recall. Choices and memory biases are shaped by the immediate environment (local context) rather than overall experience.

Keywords:
behavioral economicscontextdecisions from experienceencodingmemorymemory biasesopen dataopen materialspreregisteredrisky decision-making

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Area of Science:

  • Cognitive Psychology
  • Neuroeconomics
  • Decision Science

Background:

  • Memory recall and decision-making are known to be influenced by contextual cues.
  • Existing theories often overlook the dynamic interplay between context, memory, and choice behavior.

Purpose of the Study:

  • To investigate how distinct environmental contexts affect risky choices in an experience-based decision-making task.
  • To determine whether choices are guided by the context present during encoding or retrieval.
  • To examine how context influences memory accessibility and frequency judgments of experienced outcomes.

Main Methods:

  • Participants completed an experience-based risky choice task across two distinct, visually separated contexts within a single session.
  • Behavioral data on choices and subsequent memory tests were analyzed to assess context-dependent effects.
  • Statistical analyses were performed to compare choices and memory biases across different contextual conditions.

Main Results:

  • Risky choices were demonstrably context-dependent, with participants making different decisions for identical options based on the experienced outcomes within each context.
  • Choices reflected a bias towards the most extreme outcomes within the local context, not the global set of all outcomes.
  • When tested in a novel context, choices were influenced by the context at the time of learning (encoding), not the context at the time of testing (retrieval).
  • Memory tests revealed context-specific biases, with extreme outcomes from each context being more accessible and judged as more frequent.

Conclusions:

  • Contextual factors exert a powerful influence on risky choice and memory, challenging theories that prioritize retrieval over context during decision-making.
  • The findings highlight the importance of local context in shaping both choice behavior and memory recall.
  • Future research should consider the role of environmental context in models of decision-making and memory.