The Transdiagnostic Model (Fairburn et al.): Suggest the underlying cause of all ED'd is the same set of cognitive distortions - refered to as 'core psychopathology' - involves the overestimation of bodyweight, apperance and emphasis on self-control which Fairbun believed to be the cetral factor in an. A person with AN's self-esteem in primarily determined by their weight and appearance and their ability to control these. The characteristic of those with AN is maintained by these 3 mechanisms:
1. An enhanced sense of self-control (eating very little) = increased self-esteem (positive reinforcement).
2. The physiologial and psychological changes they experience as a results of their starvation (intesified hunger) are seen as being the result of failures in self-control = more intensified food restriction.
3. Because of focus on weight and appearance, individual engages in increased monitoring of weight (regular weight checking etc.) any weight gain/slow weight loss leads to increased effors to restricting food to re-gain self-contorol/esteem
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