An investigation of habit learning in Anorexia Nervosa

Godier-McBard, Lauren R. and de Wit, Sanne and Pinto, Anthony and Steinglass, Joanna E. and Greene, Ashley L. and Scaife, Jessica and Gillan, Claire M. and Walsh, B. Timothy and Simpson, Helen-Blair and Park, Rebecca J. (2016) An investigation of habit learning in Anorexia Nervosa. Psychiatry Research, 244. pp. 214-222. ISSN 1872-7123

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Anorexia Nervosa (AN) is a disorder characterised by compulsive behaviour, such as self-starvation and excessive exercise, which develop in the pursuit of weight-loss. Recent theory suggests that once established, compulsive weight-loss behaviours in AN may become habitual. In two parallel studies, we measured whether individuals with AN showed a bias toward habits using two outcome-devaluation tasks. In Study 1, 23 women with AN (restrictive and binge/purge subtypes), and 18 healthy controls (HC) completed the slips-of-action paradigm, designed to assess reward-based habits. In Study 2, 13 women with restrictive AN, 14 women recovered from restrictive AN, and 17 female HC participants completed the slips-of-action paradigm, and an avoidance paradigm, designed to assess aversive habits. AN participants showed no deficit relative to HCs in the ability to use feedback to respond correctly to stimuli. Following devaluation of outcomes, all groups in both studies were equally able to withhold inappropriate responses, suggesting no deficit in the balance between goal-directed and habitual control of behaviour in these tasks in AN. These results suggest that individuals with AN do not show a generalised tendency to rely on habits in two outcome-devaluation tasks. Future research is needed to investigate the potential role of disorder-specific habits in the maintenance of behaviour in AN.

Item Type: Journal Article
Additional Information: A COPY IS AVAILABLE AT:
Keywords: Anorexia Nervosa, Habit formation, Compulsivity, Goal-directed learning, Eating disorders
Faculty: ARCHIVED Faculty of Science & Technology (until September 2018)
Depositing User: Lisa Blanshard
Date Deposited: 23 Aug 2019 14:48
Last Modified: 09 Sep 2021 16:13

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