Psychological Explanations for Anorexia Nervosa: Cognitive Theory
Fairburn's Transdiagnostic Model: This model suggests that AN is maintained by a 'core psychopathology' of over-evaluating weight and shape. This leads to strict dieting, which then causes physiological and psychological symptoms that further reinforce the need for control.
The Role of Control: For many, the ability to restrict food intake provides a sense of mastery and achievement. This 'success' in dieting becomes a primary source of self-esteem, making the behavior self-reinforcing even as it becomes life-threatening.
Interpersonal Maintenance: Cognitive theories also acknowledge that social isolation, often a result of rigid eating habits, reduces the opportunity for 'cognitive restructuring' through social feedback, trapping the individual in their own distorted reality.
| Feature | Cognitive Theory | Biological Theory |
|---|---|---|
| Primary Cause | Dysfunctional thought patterns and beliefs | Genetic predisposition and neurotransmitter imbalance |
| Focus | Internal mental processes and perception | Brain structure and chemical functioning |
| Treatment Goal | Restructuring thoughts and improving flexibility | Pharmacological intervention or weight restoration |
| View of Symptoms | Symptoms are a result of irrational logic | Symptoms are a result of physiological dysfunction |
Evidence Evaluation: When discussing cognitive theory, always cite research into set-shifting and central coherence. These provide objective, experimental evidence for cognitive deficits that go beyond subjective self-reporting.
Causality vs. Maintenance: Be careful to distinguish between what causes AN and what maintains it. Cognitive factors are often seen as maintenance factors; the starvation itself can actually worsen cognitive rigidity, creating a 'vicious cycle'.
Clinical Application: Mention Cognitive Behavioral Therapy (CBT-E) as the practical application of this theory. If the theory is valid, then changing the thoughts should lead to a change in behavior, which is the basis of CBT success rates.
Misconception: It's just about vanity: Cognitive theory clarifies that AN is not a simple desire to look like a model, but a complex disorder of information processing and self-evaluation.
Pitfall: Ignoring Biology: A common mistake is to present cognitive theory as the only explanation. High-scoring responses acknowledge that cognitive distortions may be triggered or exacerbated by biological factors like malnutrition.
Over-simplification of Distortions: Avoid saying patients 'lie' about their weight. They genuinely perceive their body differently due to faulty cognitive processing, which is a involuntary psychological phenomenon.