Biological Explanations of Anorexia Nervosa
- Created by: l.ni
- Created on: 06-06-13 14:05
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- Biological Explanations of Anorexia Nervosa
- Holland et al found a 55% concordance rate for MZ twins, 7% for DZ
- Fischer and Park - abnormalities are a result of severely reduced food intake, not the cause of it.
- Supported by the Minnesota WW2 study on eating.
- Collier found a fault seratoningn receptor/gene among many anorexics.
- AN is associated with chemical imabalance. McIveen and Gross saw the hypothalamus as an eating regulator.
- Supported by "Living on Air" documentary where 10% families had >1 person with an eating disorder (Kay)
- Hoek found the same proportion of eating disorders in Curacao as in Europe
- Provides synoptic link of cross-cultural studies
- Greeen (Psychology Review 2013) says that twin studies and AN are rare so there are issues with research around AN and biological causes.
- APA (1994) reports that first degree relatives of AN sufferers have increased risk of having it too.
- BUT this could be seen to be due to sharing the same environment, rather than being genetic.
- Behaviour may be learnt from suffering family members.
- BUT this could be seen to be due to sharing the same environment, rather than being genetic.
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