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Agreeableness modulates group member risky decision-making behavior and brain activity
Fang Wang1, Xin Wang2, Fenghua Wang1
1Laboratory of Applied Brain and Cognitive Sciences, School of Business and Management, Shanghai International Studies University, People's Republic of China.
Neuroimage
|August 25, 2019
Summary
Personality traits like Agreeableness influence group decision-making. High Agreeableness increased risk-taking and altered brain activity (P300 component) in groups compared to individuals.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Social Psychology
Background:
- Group decision-making is often perceived as superior to individual decision-making.
- Previous research on the benefits of group versus individual decision-making yields inconsistent results.
- Personality traits may play a crucial role in modulating group decision-making processes.
Purpose of the Study:
- To investigate the influence of personality traits on risk-taking behavior and brain activity during group decision-making.
- To examine how Agreeableness specifically affects decision-making and neural responses in a group context.
- To compare group and individual decision-making using electrophysiological measures.
Main Methods:
- Utilized the Balloon Analogue Risk Task (BART) paradigm.
- Employed event-related potentials (ERP) to measure brain activity.
- Analyzed decision-making behavior and P300 component changes in male participants during group and individual risk-taking tasks.
Main Results:
- Participants with high Agreeableness exhibited increased risk-taking behavior in group settings compared to individual settings.
- A reduction in the P300 component was observed during group decision-making for participants with high Agreeableness.
- No significant differences in risk-taking or P300 changes were found for participants with low Agreeableness.
- Agreeableness scores showed a correlation with both risk-taking behavior and P300 amplitude modulation during group decisions.
Conclusions:
- Agreeableness personality trait significantly modulates risk-taking behavior and associated brain activity patterns during group decision-making.
- These findings highlight the importance of considering individual personality differences in the study of group dynamics and decision-making.
- The results have implications for understanding and optimizing group decision-making processes in various contexts.
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