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Related Concept Videos

Anorexia Nervosa01:28

Anorexia Nervosa

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Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
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Individuals with anorexia nervosa commonly exhibit extreme...
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Bulimia nervosa is a complex and severe eating disorder characterized by a cyclical pattern of binge-and-purge eating pattern. It generally involves an episode of binge eating, followed by compensatory behaviors such as vomiting, excessive exercise, laxative use, or fasting, to prevent weight gain. Despite often maintaining a normal weight, individuals with bulimia are intensely preoccupied with their body image and harbor an overwhelming fear of gaining weight. This can contribute to the...
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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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Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
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Introduction to Psychological Disorders01:19

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Abnormal behavior, often referred to as mental illness, results from changes in brain function that influence thought patterns, behaviors, and social interactions. Psychologists and psychiatrists typically assess abnormal behavior using three primary criteria: deviance, maladaptation, and personal distress, particularly when these traits persist over long periods.
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One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.  
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Related Experiment Video

Updated: Jun 7, 2025

Control of Eating Behavior Using a Novel Feedback System
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Altered value-based decision-making in anorexia nervosa: A systematic review.

Carina S Brown1, Audrey Nuñez2, Christina E Wierenga2

  • 1Department of Psychiatry, University of California, San Diego, USA; San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, USA.

Neuroscience and Biobehavioral Reviews
|November 18, 2024
PubMed
Summary

Decision-making alterations are central to anorexia nervosa (AN), persisting even after weight restoration. Novel computational methods reveal lasting impacts on latent decision processes, suggesting targeted interventions.

Keywords:
Anorexia nervosaChoice behaviorDecision-makingEating disordersExecutive functioningValuation

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Behavioral Economics

Background:

  • Decision-making deficits are a core feature of anorexia nervosa (AN), potentially sustaining the illness through maladaptive choices.
  • Prior reviews primarily used standard neuropsychological tests, necessitating a broader investigation using advanced methods.

Approach:

  • This systematic review (n=77) incorporated novel value-based choice tasks and computational modeling.
  • Findings were analyzed across illness state, developmental stage, and AN subtype, integrating neuroimaging data.

Key Points:

  • Decision-making differences persist in AN during illness and weight-restored states, but not consistently in full recovery or all domains.
  • Adolescents with AN may exhibit heightened punishment sensitivity, but AN subtypes are not consistently distinguishable.
  • Decision-making is context-dependent, influenced by reward/punishment, risk, uncertainty, and cognitive flexibility.

Conclusions:

  • Computational modeling indicates that while overt behavior may normalize in recovery, underlying decision-making processes remain affected.
  • Clinical interventions for AN should consider contextual factors and latent decision-making processes to effectively modify choice behavior.