title: Temporal Discounting and the Tendency to Delay Gratification across the Eating Disorder Spectrum.
abstract: Bulimia nervosa (BN) and binge eating disorder (BED) have been associated with poorer reward-related inhibitory control, reflected by a reduced tendency to delay gratification. The opposite has been reported in anorexia nervosa (AN), but differences have not been directly compared across eating disorders (EDs). This study investigated self-reported (Delaying Gratification Inventory) and task-based (temporal discounting) inhibitory control in 66 women with an ED and 28 healthy controls (HCs). Poorer task-based inhibitory control was observed in the BN compared with the AN group and poorer self-reported inhibitory control in the BN and in the BED groups compared with the AN and the HC groups, suggesting that reward-related inhibitory control varies across EDs. Symptom severity correlated with poorer self-reported (but not task-based) inhibitory control across the EDs. These data provide some support for transdiagnostic mechanisms and highlight the importance of addressing perceived loss of control in the treatment of EDs. Copyright © 2017 John Wiley & Sons, Ltd and Eating Disorders Association.
authors.affiliation: Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: Savani
authors.identifier: 0000-0002-4083-5809
authors.initials: S
authors.lastname: Bartholdy
authors.affiliation: Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: Samantha
authors.initials: S
authors.lastname: Rennalls
authors.affiliation: Department of Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: Hollie
authors.initials: H
authors.lastname: Danby
authors.affiliation: Department of Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: Claire
authors.initials: C
authors.lastname: Jacques
authors.affiliation: Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: Iain C
authors.initials: IC
authors.lastname: Campbell
authors.affiliation: Section of Eating Disorders, Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: Ulrike
authors.initials: U
authors.lastname: Schmidt
authors.affiliation: Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
authors.forename: Owen G
authors.initials: OG
authors.lastname: O'Daly
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D065786:Delay Discounting; D001068:Feeding and Eating Disorders / Q000523:psychology* / Q000628:therapy; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D012201:Reward; D057566:Self Report
keywords: anorexia nervosa; binge eating disorder; bulimia nervosa; neuropsychology