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A comparison of food‐based decision‐making between restricting and binge‐eating/purging subtypes of anorexia nervosa

International Journal of Eating Disorders Sep 02, 2020

Uniacke B, Slattery R, Walsh BT, et al. - Using an experimental paradigm, this study assessed if patients suffering with restricting (ANR) and binge‐eating/purging (ANBP) subtypes of anorexia nervosa (AN) are different in what they choose to eat and if there are variations in valuation related to food choice. Researchers included patients with restricting (ANR) (n = 40) and binge‐eating/purging (ANBP) (n = 46) subtypes of anorexia nervosa (AN) in a Food Choice Task. In this study, 76 food images were rated by participants for healthiness and tastiness, and preferences. Percent selection of high‐fat and low‐fat foods, value ratings of foods, and engagement of self‐control in food choice were compared between the groups. The data suggested that, with similar tendencies to undervalue the tastiness of high‐fat foods, individuals with ANR and ANBP similarly show reduced choices of high‐fat foods. These outcomes imply that the decision‐making process correlated with the restriction of high‐fat foods characteristic of AN is shared by both subtypes, even if individuals with ANR and ANBP differ across a range of clinical characteristics.

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