Jenkinson, Paul Mark;
Koukoutsakis, Athanasios;
Panagiotopoulou, Elena;
Vagnoni, Eleonora;
Demartini, Benedetta;
Nistico, Veronica;
Gambini, Orsola;
... Fotopoulou, Aikaterini; + view all
(2023)
Body Appearance Values Modulate Risk Aversion in Eating Restriction.
Journal of Experimental Psychology: General
10.1037/xge0001445.
(In press).
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Abstract
The understanding of eating disorders is hindered by the lack of integration between existing psychosocial and neurobiological approaches. We address this problem by developing a novel transdiagnostic and computational approach to eating restriction decisions. We first validated a novel paradigm which extends an established monetary risk task to involve body stimuli with psychosocial values. We used advanced behavioral data analysis of a large (total N = 539) sample of women from across the eating restraint spectrum, including those with anorexia nervosa (AN; n = 31), recovered from AN (n = 23), and subclinical women with varying levels of eating restraint (n = 485), obtained from an online experiment, public event, and laboratory-based study. We found that social and motivational values regarding body appearance have a significant effect on value-based, decision making in eating restriction. Subsequently, validated descriptive and predictive advanced computational modeling indicated that these behaviors are driven by an aversion to risk rather than loss, with desirable body outcomes being associated with less risk aversion, and undesirable body outcomes linked to greater risk aversion. These findings indicate that cognitive and social factors influence eating decisions by distinct mechanisms.
| Type: | Article |
|---|---|
| Title: | Body Appearance Values Modulate Risk Aversion in Eating Restriction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1037/xge0001445 |
| Publisher version: | https://doi.org/10.1037/xge0001445 |
| Language: | English |
| Additional information: | © The Author(s), 2023. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/ |
| Keywords: | risk-taking, decision making, restrictive eating, anorexia nervosa, computational modeling |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Clinical, Edu and Hlth Psychology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10171938 |
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