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A Bayesian method for measuring risk propensity in the Balloon Analogue Risk Task.

Jeff Coon1, Michael D Lee2

  • 1Department of Cognitive Sciences, University of California Irvine, Irvine, CA, 92697-5100, USA.

Behavior Research Methods
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Summary

This study introduces a new Bayesian method using censoring to better measure risk propensity and behavioral consistency in the Balloon Analogue Risk Task (BART). This approach improves upon traditional methods by including all trials for more accurate risk assessment.

Keywords:
Balloon Analogue Risk TaskBehavioral consistencyCensored measurementJASPRisk propensity

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Area of Science:

  • Decision-making research
  • Psychological measurement
  • Behavioral economics

Background:

  • The Balloon Analogue Risk Task (BART) is a common tool for assessing risk propensity.
  • Current BART analysis excludes burst trials, potentially underestimating intended risk-taking.
  • This exclusion discards valuable data on individual risk behavior.

Purpose of the Study:

  • To develop an improved method for measuring risk propensity and behavioral consistency in the BART.
  • To incorporate all trials, including burst trials, using statistical censoring.
  • To provide a more accurate and comprehensive assessment of risk-taking behavior.

Main Methods:

  • Developed a novel Bayesian statistical method based on the principle of censoring.
  • Applied the method to existing datasets to validate its efficacy.
  • Utilized R, MATLAB, and JASP for implementation.

Main Results:

  • The proposed Bayesian censoring method provides a more accurate measure of risk propensity.
  • The method successfully incorporates data from all BART trials, including those that burst.
  • Demonstrated extensions for correlating risk propensity with external measures and comparing group differences.

Conclusions:

  • The new Bayesian censoring method offers a superior approach to analyzing BART data.
  • This method enhances the understanding of risk propensity and behavioral consistency.
  • Software implementations are available for broad application in research and practice.