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dc.contributor.authorIsobe, Masanori
dc.contributor.authorKawabata, Michiko
dc.contributor.authorMurao, Ema
dc.contributor.authorNoda, Tomomi
dc.contributor.authorMatsukawa, Noriko
dc.contributor.authorKawada, Ryosaku
dc.contributor.authorUwatoko, Teruhisa
dc.contributor.authorMurai, Toshiya
dc.contributor.authorNoma, Shun'ichi
dc.contributor.authorTakahashi, Hidehiko
dc.contributor.alternative磯部, 昌憲
dc.contributor.alternative川端, 美智子
dc.contributor.alternative村尾, 英真
dc.contributor.alternative野田, 智美
dc.contributor.alternative川田, 良作
dc.contributor.alternative上床, 輝久
dc.contributor.alternative村井, 俊哉
dc.contributor.alternative野間, 俊一
dc.contributor.alternative高橋, 英彦
dc.date.accessioned2019-01-07T02:00:38Z-
dc.date.available2019-01-07T02:00:38Z-
dc.date.issued2018-12-06
dc.identifier.issn1751-0759
dc.identifier.urihttp://hdl.handle.net/2433/235937-
dc.description.abstractBackground: Anorexia nervosa (AN) patients are assumed to express high levels of guilt and envy. Ultimatum game (UG) is a standard behavioral task that focuses on interpersonal behavior when splitting a sum of money between two players. UG studies consistently demonstrate that people tend to decrease their inequity in outcomes, one explanation being that economically irrational decision-making may partly arise from the emotions guilt and envy. We assumed that AN patients would perform excessively fair in UG, reflecting high guilt and envy. Methods: We utilized UG to investigate the characteristics of guilt and envy among 24 Japanese AN patients and 22 age-matched healthy controls (HC). The relation between the outcome of UG and decision strategy confirmed by post-experimental questionnaires was analyzed. Results: As proposer, AN offered a larger amount to the responder compared with HC (p = 0.002) while, on the other hand, as responder, AN demanded much higher allocation to accept the offer compared with HC (p = 0.026). Regarding the strategy as responder, AN put more emphasis on fairness and less emphasis on monetary reward compared with HC (p = 0.046, p = 0.042, respectively). Conclusions: The results indicate that Japanese AN patients demonstrate strong preference for fairness, with high guilt and high envy. High sensitivity to guilt and envy of AN patients can affect not only their own behavior concerning eating attitude and body shape, but also decision-making in interpersonal situations. Behavioral experimental settings among social situations will enable us to evaluate and help actual decision-making in the real life of patients.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherBioMed Central Ltd.
dc.rights© The Author(s). 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
dc.subjectAnorexia nervosa
dc.subjectUltimatum game
dc.subjectFairness
dc.subjectEnvy
dc.subjectGuilt
dc.titleExaggerated envy and guilt measured by economic games in Japanese women with anorexia nervosa
dc.type.niitypeJournal Article
dc.identifier.jtitleBioPsychoSocial Medicine
dc.identifier.volume12
dc.relation.doi10.1186/s13030-018-0138-8
dc.textversionpublisher
dc.identifier.artnum19
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.addressDepartment of Psychiatry, Graduate School of Medicine, Kyoto University
dc.identifier.pmid30534196
dc.identifier.kaken23680045
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