Journal
EMOTION
Volume 10, Issue 6, Pages 855-862Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0019861
Keywords
altruistic punishment; decision-making; self-control; impulsivity; serotonin
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Funding
- Medical Research Council [G1000183, G0001354] Funding Source: Medline
- Wellcome Trust [093875] Funding Source: Medline
- MRC [G1000183] Funding Source: UKRI
- Medical Research Council [G0001354, G1000183, G0001354B] Funding Source: researchfish
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Human cooperation may partly depend on the presence of individuals willing to incur personal costs to punish noncooperators. The psychological factors that motivate such 'altruistic punishment' are not fully understood; some have argued that altruistid punishment is a deliberate act of norm enforcement that requires self-control, while others claim that it is an impulsive act driven primarily by emotion. In the current study, we addressed this question by examining the relationship between impulsive choice and altruistic punishment in the ultimatum game. As the neurotransmitter serotonin has been implicated in both impulsive choice and altruistic punishment, we investigated the effects of manipulating serotonin on both measures. Across individuals, impulsive choice and altruistic punishment were correlated and increased following serotonin depletion. These findings imply that altruistic punishment reflects the absence rather than the presence of self control, and suggest that impulsive choice and altruistic punishment share common neural mechanisms.
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