The Biological approach to OCD

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1. Genetic explanation

  • OCD being inherited through genetic transmission
  • Twin studies provide evidence, however problems separating the influences of genetic and environmental factors. 
  • DNA Profiling- comparing the DNA of OCD sufferers and non-suffers. 
  • OCD sufferers often have Tourette's syndrome. 
  • Indicates a link between OCD and certain genes.


2. Neural explanation

  • Some forms of


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