Human Wagering Behavior Depends on Opponents' Faces
Identifieur interne : 003702 ( Main/Exploration ); précédent : 003701; suivant : 003703Human Wagering Behavior Depends on Opponents' Faces
Auteurs : Erik J. Schlicht [États-Unis] ; Shinsuke Shimojo [États-Unis] ; Colin F. Camerer [États-Unis] ; Peter Battaglia [États-Unis] ; Ken Nakayama [États-Unis]Source :
- PLoS ONE [ 1932-6203 ] ; 2010.
Abstract
Research in competitive games has exclusively focused on how opponent models are developed through previous outcomes and how peoples' decisions relate to normative predictions. Little is known about how rapid impressions of opponents operate and influence behavior in competitive economic situations, although such subjective impressions have been shown to influence cooperative decision-making. This study investigates whether an opponent's face influences players' wagering decisions in a zero-sum game with hidden information. Participants made risky choices in a simplified poker task while being presented opponents whose faces differentially correlated with subjective impressions of trust. Surprisingly, we find that threatening face information has little influence on wagering behavior, but faces relaying positive emotional characteristics impact peoples' decisions. Thus, people took significantly longer and made more mistakes against emotionally positive opponents. Differences in reaction times and percent correct were greatest around the optimal decision boundary, indicating that face information is predominantly used when making decisions during medium-value gambles. Mistakes against emotionally positive opponents resulted from increased folding rates, suggesting that participants may have believed that these opponents were betting with hands of greater value than other opponents. According to these results, the best “poker face” for bluffing may not be a neutral face, but rather a face that contains emotional correlates of trustworthiness. Moreover, it suggests that rapid impressions of an opponent play an important role in competitive games, especially when people have little or no experience with an opponent.
Url:
DOI: 10.1371/journal.pone.0011663
PubMed: 20657772
PubMed Central: 2908123
Affiliations:
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<front><div type="abstract" xml:lang="en"><p>Research in competitive games has exclusively focused on how opponent models are developed through previous outcomes and how peoples' decisions relate to normative predictions. Little is known about how rapid impressions of opponents operate and influence behavior in competitive economic situations, although such subjective impressions have been shown to influence cooperative decision-making. This study investigates whether an opponent's face influences players' wagering decisions in a zero-sum game with hidden information. Participants made risky choices in a simplified poker task while being presented opponents whose faces differentially correlated with subjective impressions of trust. Surprisingly, we find that threatening face information has little influence on wagering behavior, but faces relaying positive emotional characteristics impact peoples' decisions. Thus, people took significantly longer and made more mistakes against emotionally positive opponents. Differences in reaction times and percent correct were greatest around the optimal decision boundary, indicating that face information is predominantly used when making decisions during medium-value gambles. Mistakes against emotionally positive opponents resulted from increased folding rates, suggesting that participants may have believed that these opponents were betting with hands of greater value than other opponents. According to these results, the best “poker face” for bluffing may not be a neutral face, but rather a face that contains emotional correlates of trustworthiness. Moreover, it suggests that rapid impressions of an opponent play an important role in competitive games, especially when people have little or no experience with an opponent.</p>
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<name sortKey="Battaglia, Peter" sort="Battaglia, Peter" uniqKey="Battaglia P" first="Peter" last="Battaglia">Peter Battaglia</name>
<name sortKey="Camerer, Colin F" sort="Camerer, Colin F" uniqKey="Camerer C" first="Colin F." last="Camerer">Colin F. Camerer</name>
<name sortKey="Nakayama, Ken" sort="Nakayama, Ken" uniqKey="Nakayama K" first="Ken" last="Nakayama">Ken Nakayama</name>
<name sortKey="Schlicht, Erik J" sort="Schlicht, Erik J" uniqKey="Schlicht E" first="Erik J." last="Schlicht">Erik J. Schlicht</name>
<name sortKey="Shimojo, Shinsuke" sort="Shimojo, Shinsuke" uniqKey="Shimojo S" first="Shinsuke" last="Shimojo">Shinsuke Shimojo</name>
</country>
</tree>
</affiliations>
</record>
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