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The Influence of Dietary Patterns on Outcomes in a Bayesian Choice Task

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  • David L. Dickinson
  • Eugenio Caleb Garbuio

Abstract

This paper reports on a preregistered study aimed at testing for executive function differences across individuals who self-reported one of four distinct dietary patterns: No Diet, No Sugar, Vegetarian, and Mediterranean Diet patterns. The incentivized decision task involves Bayesian assessments where participants may use existing (base rate) as well as new information (sample draw evidence) in making probability assessments. Sample size, hypotheses, and analysis plans were all determined ex ante and registered on the Open Science Framework. Our hypotheses were aimed at testing whether adherence to a specialty diet improved decision making relative to those who reported following No Diet. Our data fail to support these hypotheses. In fact, we found some evidence that adherence to a No Sugar Diet predicted a reduced decision accuracy and was connected to an increased imbalance in how the participant weighted the two sources of information available. Our results suggest that decision making is nuanced among dietary groups, but that short-term incentivized decisions in an ecologically valid field setting are likely not improved solely by following a promoted diet such as the Mediterranean or Vegetarian diet. Key Words:

Suggested Citation

  • David L. Dickinson & Eugenio Caleb Garbuio, 2020. "The Influence of Dietary Patterns on Outcomes in a Bayesian Choice Task," Working Papers 21-01, Department of Economics, Appalachian State University.
    • Handle: RePEc:apl:wpaper:21-01
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    File URL: http://econ.appstate.edu/RePEc/pdf/wp2101.pdf
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    References listed on IDEAS

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    1. repec:cup:judgdm:v:3:y:2008:i::p:181-190 is not listed on IDEAS
    2. David M. Grether, 1980. "Bayes Rule as a Descriptive Model: The Representativeness Heuristic," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 95(3), pages 537-557.
    3. Dickinson, David L. & McElroy, Todd, 2019. "Bayesian versus heuristic-based choice under sleep restriction and suboptimal times of day," Games and Economic Behavior, Elsevier, vol. 115(C), pages 48-59.
    4. Dickinson, David L. & Drummond, Sean P. A., 2008. "The effects of total sleep deprivation on bayesian updating," Judgment and Decision Making, Cambridge University Press, vol. 3(2), pages 181-190, February.
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    Cited by:

    1. David L. Dickinson & Parker Reid, 2023. "Gambling habits and Probability Judgements in a Bayesian Task Environment," Working Papers 23-03, Department of Economics, Appalachian State University.

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    More about this item

    JEL classification:

    • D90 - Microeconomics - - Micro-Based Behavioral Economics - - - General
    • C90 - Mathematical and Quantitative Methods - - Design of Experiments - - - General
    • I10 - Health, Education, and Welfare - - Health - - - General

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