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Related Concept Videos

Binge Eating Disorders01:23

Binge Eating Disorders

691
Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...
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Timing and Consequences on Behavior01:08

Timing and Consequences on Behavior

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In operant conditioning, the timing of reinforcement is crucial. For animals like rats and cats, immediate reinforcement (within a few seconds) is much more effective than delayed reinforcement. For example, a food reward for a rat needs to follow within 30 seconds of pressing a bar to be effective. 
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
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Updated: Mar 15, 2026

Author Spotlight: Accessible M&M-Based Mouse Model for Investigating Binge Eating Disorder - Insights into Eating Behaviors, Anxiety, and Neural Mechanisms
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Delay discounting predicts binge-eating in Wistar rats.

Amanda M Cano1, Eric S Murphy1, Gwen Lupfer1

  • 1Department of Psychology, University of Alaska Anchorage, 3211 Providence Drive, Anchorage, AK, 99508, USA.

Behavioural Processes
|August 29, 2016
PubMed
Summary

Impulsivity predicts binge-eating behavior in rats, but not obesity proneness. This suggests interventions targeting reward choices may help reduce binge eating.

Keywords:
Binge-eatingDelay discountingImpulsivityObesity

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Area of Science:

  • Behavioral Neuroscience
  • Obesity Research
  • Addiction Science

Background:

  • Impulsivity is linked to obesity and binge-eating disorder.
  • Binge-eating represents a distinct subset of individuals with overweight.
  • Understanding the relationship between impulsivity and specific eating behaviors is crucial.

Purpose of the Study:

  • To investigate the relationship between impulsivity, binge-eating behavior, and diet-induced obesity proneness in a rat model.
  • To determine if impulsivity predicts binge-eating and/or obesity proneness.
  • To explore the distinct contributions of impulsivity and binge-eating to obesity.

Main Methods:

  • 10 male Wistar rats were used in a counterbalanced experimental design.
  • Impulsivity was assessed using a delay discounting task.
  • Binge-eating was measured by consumption of intermittently available palatable food (Oreo cookies).
  • Diet-induced obesity proneness was assessed by weight gain on a sweet, high-fat diet.

Main Results:

  • Impulsivity significantly predicted binge-eating behavior.
  • Impulsivity did not predict diet-induced obesity proneness.
  • Binge-eating behavior and obesity proneness were not significantly related.
  • This study provides the first evidence associating binge-eating behavior with impulsivity in rats.

Conclusions:

  • Impulsivity is a specific predictor of binge-eating behavior, independent of general obesity proneness.
  • Findings suggest that interventions aimed at improving self-control over reward choices may be effective in managing binge-eating.
  • Future research should explore the efficacy of delay discounting interventions for binge-eating behavior.