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• W20413012 abstract "Event Abstract Back to Event The rationale behind irrational decisions Helene Tzieropoulos1*, Rolando Grave De Peralta Menendez1, 2, Peter Bossaerts3 and Sara L. Gonzalez-Andino1, 2 1 Geneva University Hospital, Switzerland 2 University Medical Center , Switzerland 3 Ecole Polytechniqe Federal de Lausanne (EPFL), Switzerland Although rarely studied, disappointment is one of the prime negative emotions that influence decision making. Indeed, in order to avoid feeling negative emotions, individuals tend to modify their behavior in an often unpredictable and irrational way. Up to now, the neural correlates of this phenomenon have never been investigated in neuroimaging studies. Here we show that after a certain threshold of disappointment, behavior becomes irrational. Specifically, all participants in a socio-economic game (the Trust Game) started punishing new, unknown opponents as a result of disappointing outcomes in the previous trial. However, a large variance in the tolerance to disappointment was observed across subjects, with some participants needing only a small gap between their expectations and the real outcome to be strongly biased in their following judgments. As revealed by high density EEG recordings and contrary to the currently held view, this behaviour was not the direct consequence of emotions. Indeed, those least tolerant individuals used the same neural system to process both neutral and emotionally-laden outcomes, whereas the most tolerant ones - who thought twice before making a decision and earned more money - relied on a conflict-resolution system when confronted to unexpected outcomes. This study thus provides stark evidence for the co-existence of two different neural systems within certain individuals, one reflexive and one reflective, as predicted by the dual-system theory of social judgment and decision making. Conference: 41st European Brain and Behaviour Society Meeting, Rhodes Island, Greece, 13 Sep - 18 Sep, 2009. Presentation Type: Poster Presentation Topic: Poster presentations Citation: Tzieropoulos H, Grave De Peralta Menendez R, Bossaerts P and Gonzalez-Andino SL (2009). The rationale behind irrational decisions. Conference Abstract: 41st European Brain and Behaviour Society Meeting. doi: 10.3389/conf.neuro.08.2009.09.332 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 15 Jun 2009; Published Online: 15 Jun 2009. * Correspondence: Helene Tzieropoulos, Geneva University Hospital, Lausanne 1015 Vaud, Switzerland, helene.tzieropoulos@hcuge.ch Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Helene Tzieropoulos Rolando Grave De Peralta Menendez Peter Bossaerts Sara L Gonzalez-Andino Google Helene Tzieropoulos Rolando Grave De Peralta Menendez Peter Bossaerts Sara L Gonzalez-Andino Google Scholar Helene Tzieropoulos Rolando Grave De Peralta Menendez Peter Bossaerts Sara L Gonzalez-Andino PubMed Helene Tzieropoulos Rolando Grave De Peralta Menendez Peter Bossaerts Sara L Gonzalez-Andino Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page." @default.
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• W20413012 title "The rationale behind irrational decisions" @default.
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