Receipt of reward leads to altered estimation of effort
Identifieur interne : 000636 ( Main/Merge ); précédent : 000635; suivant : 000637Receipt of reward leads to altered estimation of effort
Auteurs : Arezoo Pooresmaeili [Allemagne] ; Aurel Wannig [Allemagne] ; Raymond J. Dolan [Allemagne, Royaume-Uni]Source :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2015.
Abstract
Retrospective reevaluation of effort is a pervasive aspect of everyday life, such as when we assess our professional satisfaction after knowing the ensuing outcomes. Previous studies have focused on the interaction of effort and reward when a choice is to be made, whereas retrospective interactions have been largely ignored. Here we show that humans revise their estimation of effort after receiving a reward. When rewarded more than average, subjects tend to overestimate their effort, with a converse effect observed for low rewards. The size of this bias depends strongly on the contingency between reward magnitude and task difficulty and is dynamically adjusted when changes occur in these contingencies. These results reveal a sophisticated mechanism to cope with reward–effort inconsistencies.
Url:
DOI: 10.1073/pnas.1507527112
PubMed: 26460026
PubMed Central: 4629341
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Dolan</name><affiliation wicri:level="1"><nlm:aff id="aff1">Berlin School of Mind and Brain,<institution>Humboldt-Universität zu Berlin</institution>, 10099 Berlin,<country>Germany</country>;</nlm:aff><country xml:lang="fr">Allemagne</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="aff3">Wellcome Trust Center for Neuroimaging, Institute of Neurology,<institution>University College London</institution>, London WC1N 3BG,<country>United Kingdom</country>;</nlm:aff><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation><affiliation wicri:level="1"><nlm:aff id="aff4"><institution>Max Planck University College London Centre for Computational Psychiatry and Ageing Research</institution>, London WC1B 5EH,<country>United Kingdom</country></nlm:aff><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></analytic><series><title level="j">Proceedings of the National Academy of Sciences of the United States of America</title><idno type="ISSN">0027-8424</idno><idno type="eISSN">1091-6490</idno><imprint><date when="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><title>Significance</title><p>Retrospective reevaluation of effort is a pervasive aspect of everyday life, such as when we assess our professional satisfaction after knowing the ensuing outcomes. Previous studies have focused on the interaction of effort and reward when a choice is to be made, whereas retrospective interactions have been largely ignored. Here we show that humans revise their estimation of effort after receiving a reward. When rewarded more than average, subjects tend to overestimate their effort, with a converse effect observed for low rewards. The size of this bias depends strongly on the contingency between reward magnitude and task difficulty and is dynamically adjusted when changes occur in these contingencies. These results reveal a sophisticated mechanism to cope with reward–effort inconsistencies.</p></div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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