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KMID : 0605720170230010041
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Journal of the Korean Society of Biological Therapies in Psychiatry
2017 Volume.23 No. 1 p.41 ~ p.52
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The Influence of Personality Factors on Social Decision-Making in Healthy Subjects
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Park Seung-Hyun
Kim Yang-Tae
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Abstract
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Objectives：This study investigated the role of personality trait in the Ultimatum game and the Trolley game.
Methods：Eighty subjects were recruited. The participants conducted the Big Five Inventory-K-10(BFI-K-10), the Ultimatum game and the Trolley game. The Ultimatum game consisted of two sets of questions : 48 questions with the role of a responder ; 6 with that of a proposer. The trolley game consisted of 8 scenarios, and the subjects were asked to answer whether the scenario was morally acceptable or not.
Results：Openness scores were significantly associated to acceptance rate of 9 : 1 offer(r=0.269, p＜0.05) and 8:2 offer(r=0.225, p＜0.05) in the Ultimatum game. Agreeableness scores were associated to acceptance rate of 7 : 3 offer(r=-0.235, p＜0.05) in the Ultimatum game. As a proposer in the Ultimatum game, neuroticism scores were associated to money distribution(r=-0.24, p＜0.05). In the Trolley game, Openness scores were associated to acceptance rate of loop(r=-0.254, p＜0.05) and loop obstacle(r=-0.254, p＜0.05). Other personality traits including Extraversion and Conscientiousness showed no significant results.
Conclusion：Participants with high openness scores tended to accept unfair offers in the Ultimatum game and choose decisions based on the deontological ethics in the Trolley game more than participants with other traits. Participants with high agreeableness scores showed higher rejection rates of 7 to 3 offers in the Ultimatum game. Participants with high neuroticism scores offered more money in the Ultimatum game.
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KEYWORD
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Personality, Decision-making, Game
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