Defectors cannot be detected during"small talk" with strangers.

To account for the widespread human tendency to cooperate in one-shot social dilemmas, some theorists have proposed that cooperators can be reliably detected based on ethological displays that are difficult to fake. Experimental findings have supported the view that cooperators can be distinguished...

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Autores principales:	Joseph H Manson, Matthew M Gervais, Michelle A Kline
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/48e82b9a2e2b48349ac519e95be21a54
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spelling	oai:doaj.org-article:48e82b9a2e2b48349ac519e95be21a542021-11-18T08:41:48ZDefectors cannot be detected during"small talk" with strangers.1932-620310.1371/journal.pone.0082531https://doaj.org/article/48e82b9a2e2b48349ac519e95be21a542013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24358201/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203To account for the widespread human tendency to cooperate in one-shot social dilemmas, some theorists have proposed that cooperators can be reliably detected based on ethological displays that are difficult to fake. Experimental findings have supported the view that cooperators can be distinguished from defectors based on "thin slices" of behavior, but the relevant cues have remained elusive, and the role of the judge's perspective remains unclear. In this study, we followed triadic conversations among unacquainted same-sex college students with unannounced dyadic one-shot prisoner's dilemmas, and asked participants to guess the PD decisions made toward them and among the other two participants. Two other sets of participants guessed the PD decisions after viewing videotape of the conversations, either with foreknowledge (informed), or without foreknowledge (naïve), of the post-conversation PD. Only naïve video viewers approached better-than-chance prediction accuracy, and they were significantly accurate at predicting the PD decisions of only opposite-sexed conversation participants. Four ethological displays recently proposed to cue defection in one-shot social dilemmas (arms crossed, lean back, hand touch, and face touch) failed to predict either actual defection or guesses of defection by any category of observer. Our results cast doubt on the role of "greenbeard" signals in the evolution of human prosociality, although they suggest that eavesdropping may be more informative about others' cooperative propensities than direct interaction.Joseph H MansonMatthew M GervaisMichelle A KlinePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e82531 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Joseph H Manson Matthew M Gervais Michelle A Kline Defectors cannot be detected during"small talk" with strangers.
description	To account for the widespread human tendency to cooperate in one-shot social dilemmas, some theorists have proposed that cooperators can be reliably detected based on ethological displays that are difficult to fake. Experimental findings have supported the view that cooperators can be distinguished from defectors based on "thin slices" of behavior, but the relevant cues have remained elusive, and the role of the judge's perspective remains unclear. In this study, we followed triadic conversations among unacquainted same-sex college students with unannounced dyadic one-shot prisoner's dilemmas, and asked participants to guess the PD decisions made toward them and among the other two participants. Two other sets of participants guessed the PD decisions after viewing videotape of the conversations, either with foreknowledge (informed), or without foreknowledge (naïve), of the post-conversation PD. Only naïve video viewers approached better-than-chance prediction accuracy, and they were significantly accurate at predicting the PD decisions of only opposite-sexed conversation participants. Four ethological displays recently proposed to cue defection in one-shot social dilemmas (arms crossed, lean back, hand touch, and face touch) failed to predict either actual defection or guesses of defection by any category of observer. Our results cast doubt on the role of "greenbeard" signals in the evolution of human prosociality, although they suggest that eavesdropping may be more informative about others' cooperative propensities than direct interaction.
format	article
author	Joseph H Manson Matthew M Gervais Michelle A Kline
author_facet	Joseph H Manson Matthew M Gervais Michelle A Kline
author_sort	Joseph H Manson
title	Defectors cannot be detected during"small talk" with strangers.
title_short	Defectors cannot be detected during"small talk" with strangers.
title_full	Defectors cannot be detected during"small talk" with strangers.
title_fullStr	Defectors cannot be detected during"small talk" with strangers.
title_full_unstemmed	Defectors cannot be detected during"small talk" with strangers.
title_sort	defectors cannot be detected during"small talk" with strangers.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/48e82b9a2e2b48349ac519e95be21a54
work_keys_str_mv	AT josephhmanson defectorscannotbedetectedduringsmalltalkwithstrangers AT matthewmgervais defectorscannotbedetectedduringsmalltalkwithstrangers AT michelleakline defectorscannotbedetectedduringsmalltalkwithstrangers
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Defectors cannot be detected during"small talk" with strangers.

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