Preference for Safe Over Risky Options in Binge Eating.

Area of Science:

• Neuroscience
• Psychology
• Behavioral Economics

Background:

• Binge eating is often characterized as impulsive, with limited understanding of decision-making under risk and uncertainty in affected individuals.
• Healthy individuals exhibit risk-averse behavior when exposed to stress cues.
• The impact of food cues, perceived as threatening by binge-eating patients, on their decision-making remains largely unexplored.

Purpose of the Study:

• To investigate decision-making processes under risk and uncertainty in patients with eating disorders characterized by binge eating.
• To examine the influence of neutral, stressful, and binge-food cues on risk-taking behavior in these patient groups.

Main Methods:

• A cross-sectional study involving patients with bulimia nervosa (BN), anorexia nervosa binge-eating (ANB) type, anorexia nervosa restrictive (ANR) type, and healthy controls.
• Utilized a gambling task (decisions under risk) and the Balloon Analog Risk-Taking (BART) task (decisions under uncertainty).
• Assessed behavior across neutral, stressful, and binge-food cue conditions.

Main Results:

• Binge-eating (BN) and ANR patients displayed safer decision-making and increased loss aversion when exposed to food cues compared to neutral cues, mirroring responses to stress.
• This effect was consistent in both the gambling task and the BART for BN and ANR patients.
• ANB patients showed increased choice variability in the food condition on the BART, linked to difficulties in filtering irrelevant information.

Conclusions:

• Decision-making under risk and uncertainty is not universally impaired in all patients with eating disorders involving binge eating.
• Food cues can elicit risk-averse behavior in binge-eating patients, similar to the effects of stress.
• Specific subgroups, like ANB patients, may exhibit altered decision-making variability related to attentional control issues.