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The influence of dietary patterns on outcomes in a Bayesian choice task
David L Dickinson1,2,3, Caleb Garbuio4
1Department of Economics and CERPA Appalachian State University Boone North Carolina USA.
Health Science Reports
|September 20, 2021
Summary
Specialty diets like vegetarian or Mediterranean did not improve decision-making accuracy. The No Sugar Diet was linked to poorer decision accuracy and information weighting.
Area of Science:
- Cognitive Neuroscience
- Nutritional Science
- Behavioral Economics
Background:
- Previous research explored diet's general impact on cognition.
- This study focused on specific executive functions related to decision-making.
Purpose of the Study:
- To test for executive function differences across four dietary patterns: No Diet, No Sugar, Vegetarian, and Mediterranean Diet.
- To investigate if adherence to specialty diets improves decision-making compared to a No Diet control group.
Main Methods:
- A preregistered cross-sectional study utilizing an incentivized Bayesian choice task.
- Participants assessed probability using base rate odds and new evidence, with data analyzed using multivariate estimation.
- Study design, hypotheses, and analysis were pre-registered on the Open Science Framework.
Main Results:
- The study failed to support hypotheses that specialty diets enhance executive functions.
- Evidence suggested the No Sugar Diet was associated with reduced decision accuracy.
- Adherence to a No Sugar Diet correlated with an imbalanced weighting of information sources during decision-making.
Conclusions:
- Decision-making processes vary across dietary groups.
- Short-term, incentivized decisions in real-world settings are not demonstrably improved by adherence to popular diets like Mediterranean or Vegetarian.
- Further research is needed to understand the complex relationship between diet and specific cognitive functions.
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