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Spreading inequality: neural computations underlying paying-it-forward reciprocity

People tend to pay the generosity they receive from a person forward to someone else even if they have no chance to reciprocate directly. This phenomenon, known as paying-it-forward (PIF) reciprocity, crucially contributes to the maintenance of a cooperative human society by passing kindness among s...

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Autores principales: Hu, Yang, He, Lisheng, Zhang, Lei, Wölk, Thorben, Dreher, Jean-Claude, Weber, Bernd
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6022566/
https://www.ncbi.nlm.nih.gov/pubmed/29897606
http://dx.doi.org/10.1093/scan/nsy040
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author Hu, Yang
He, Lisheng
Zhang, Lei
Wölk, Thorben
Dreher, Jean-Claude
Weber, Bernd
author_facet Hu, Yang
He, Lisheng
Zhang, Lei
Wölk, Thorben
Dreher, Jean-Claude
Weber, Bernd
author_sort Hu, Yang
collection PubMed
description People tend to pay the generosity they receive from a person forward to someone else even if they have no chance to reciprocate directly. This phenomenon, known as paying-it-forward (PIF) reciprocity, crucially contributes to the maintenance of a cooperative human society by passing kindness among strangers and has been widely studied in evolutionary biology. To further examine its neural implementation and underlying computations, we used functional magnetic resonance imaging together with computational modeling. In a modified PIF paradigm, participants first received a monetary split (i.e. greedy, equal or generous) from either a human partner or a computer. They then chose between two options involving additional amounts of money to be allocated between themselves and an uninvolved person. Behaviorally, people forward the previously received greed/generosity towards a third person. The social impact of previous treatments is integrated into computational signals in the ventromedial prefrontal cortex and the right temporoparietal junction during subsequent decision making. Our findings provide insights to understand the proximal origin of PIF reciprocity.
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spelling pubmed-60225662018-07-10 Spreading inequality: neural computations underlying paying-it-forward reciprocity Hu, Yang He, Lisheng Zhang, Lei Wölk, Thorben Dreher, Jean-Claude Weber, Bernd Soc Cogn Affect Neurosci Original Articles People tend to pay the generosity they receive from a person forward to someone else even if they have no chance to reciprocate directly. This phenomenon, known as paying-it-forward (PIF) reciprocity, crucially contributes to the maintenance of a cooperative human society by passing kindness among strangers and has been widely studied in evolutionary biology. To further examine its neural implementation and underlying computations, we used functional magnetic resonance imaging together with computational modeling. In a modified PIF paradigm, participants first received a monetary split (i.e. greedy, equal or generous) from either a human partner or a computer. They then chose between two options involving additional amounts of money to be allocated between themselves and an uninvolved person. Behaviorally, people forward the previously received greed/generosity towards a third person. The social impact of previous treatments is integrated into computational signals in the ventromedial prefrontal cortex and the right temporoparietal junction during subsequent decision making. Our findings provide insights to understand the proximal origin of PIF reciprocity. Oxford University Press 2018-06-07 /pmc/articles/PMC6022566/ /pubmed/29897606 http://dx.doi.org/10.1093/scan/nsy040 Text en © The Author(s) (2018). Published by Oxford University Press. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
spellingShingle Original Articles
Hu, Yang
He, Lisheng
Zhang, Lei
Wölk, Thorben
Dreher, Jean-Claude
Weber, Bernd
Spreading inequality: neural computations underlying paying-it-forward reciprocity
title Spreading inequality: neural computations underlying paying-it-forward reciprocity
title_full Spreading inequality: neural computations underlying paying-it-forward reciprocity
title_fullStr Spreading inequality: neural computations underlying paying-it-forward reciprocity
title_full_unstemmed Spreading inequality: neural computations underlying paying-it-forward reciprocity
title_short Spreading inequality: neural computations underlying paying-it-forward reciprocity
title_sort spreading inequality: neural computations underlying paying-it-forward reciprocity
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6022566/
https://www.ncbi.nlm.nih.gov/pubmed/29897606
http://dx.doi.org/10.1093/scan/nsy040
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