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Does Inequity Aversion Motivate Punishment? Cleaner Fish as a Model System

Abstract  

In human social interactions, punishment is often directed at cheating individuals. Subjective reports and neuro-imaging studies
indicate that the experience of interacting with a cheat produces negative emotions and that the act of punishing a cheat
assuages these feelings. However, while negative emotions may elicit punishment, the precise source of these emotions remains
obscure. Specifically, it is often very difficult to tease apart whether punishing individuals are inequity averse (upset
because cheating partner receives more than they should) or, more simply, whether they might be loss averse (upset because
their payoffs did not meet their expectations). We compare results on punishment and inequity aversion in humans with results
from a non-human model system, the cleaning mutualism between bluestreak cleaner wrasse (Labroides dimidiatus) and its reef-fish ‘clients’. Male cleaner fish are known to punish females that cheat during joint client inspections, but
a recent study failed to demonstrate evidence for inequity aversion in this species. We suggest that punishment in cleaner
fish may be motivated by loss aversion rather than inequity aversion. Punishment in humans might also often be motivated by
loss aversion—and empirical studies that disentangle the two competing motives for punishment are a clear research priority.

  • Content Type Journal Article
  • Pages 1-19
  • DOI 10.1007/s11211-012-0157-8
  • Authors
    • Nichola J. Raihani, University College London, Gower St, London, WC1E 6BT UK
    • Katherine McAuliffe, Harvard University, Boston, MA, USA
    • Journal Social Justice Research
    • Online ISSN 1573-6725
    • Print ISSN 0885-7466
Posted in: Journal Article Abstracts on 05/16/2012 | Link to this post on IFP |
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