Introduction & Theoretical Background
Anorexia nervosa is characterized by:
- A restriction of energy intake relative to requirements leading to significantly low body weight
- Intense fear of gaining weight or becoming fat, or persistent behavior that interferes with weight gain
- Disturbances in the way body shape and weight is experienced, and/or undue influence of body weight or shape on self-evaluation
(American Psychiatric Association, 2013). Fairburn, Cooper & Shafran (2003) argue that over-evaluation of eating, shape and weight, and their control is central to the maintenance of anorexia nervosa. They propose that this cognitive process drives dieting and weight control behavior which results in ‘starvation syndrome’ and further cognitive changes. Their model of anorexia nervosa presented here describes the maintenance of both a ‘restricting type’ and a ‘binge-eating / purging type’. In their extended transdiagnostic theory of eating disorders (of which the present maintaining processes form a part) the authors identify a number of additional maintenance mechanisms which operate