A2 Psychology Unit 3 Eating Behaviour: Evolutionary Explanations Of Anorexia Nervosa Notes
What You Need To Know:
· Evolutionary Explanations, for one eating disorder: Anorexia Nervosa.
Evolutionary explanations of anorexia nervosa:
Pseudopathology (Crawford, 1998)
· A pseudopathology is an illness brought about by an entirely intact adaptive mechanism responding in a modern environment it was not designed for.
· In terms of evolution, women strive to be attractive to men. In the past this will have meant being able to provide and carry children; now it means being thin.
· The result is that there is an adaptive advantage to being thin.
· The adaptation mechanism is in place and is working, but under the socio-cultural pressures of the media of today the result may be anorexia.
Adapted to Flee Famine Hypothesis (AFFH) (Guisinger, 2003)
· Features of anorexia helped early humans to migrate to more plentiful environments in response to local famine.
· Efficient migration meant switching off the usual adaptations to hunger (lethargy, energy conservation and hunger).
· Therefore, restricting food intake, denial of starvation and hyperactivity could help migration.
· Whilst no…