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2. name 3 behaviours that result as evolutionary adaptations

  • brushing, dancing, stuttering
  • grooming, concern for others, hoarding
  • cleaning, tidying, hoarding

3. name an alternative gene to the COMT gene and what it showed?

  • the SAPAP3 gene which showed and increase in grooming with mice
  • the SAPAP gene showing a decrease in mice grooming themselves

4. what did freuds theory suggest about ocd

  • that it is learnt from a young age when a fixation occurs
  • that it is learnt during childhood as a result of too much emphasis on cleaning

5. do antidepressants increase or decrease serotonin levels?

  • increase which reduces the anxiety which stimulates an obsession
  • decrease which reduces the anxiety associated with an obsession
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