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1. name 3 behaviours that result as evolutionary adaptations

  • grooming, concern for others, hoarding
  • cleaning, tidying, hoarding
  • brushing, dancing, stuttering
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2. give a strategy which has developed as an evolutionary adapatation

  • hoarding
  • harm avoidance strategy
  • cleaning

3. what two factors explain the behaioural approach

  • conditioning to create obsessions, reinforcement of compulsions to reduce anxiety
  • obsessions are formed through genetics, compulsions formed from environmental factors

4. The high amounts of the COMT gene is linked to a decrease in OCD,why?

  • increases dopamine
  • because it terminates the action of dopamine which can cause the obsession through overactivity
  • decreases serotonin

5. Abnormal levels of neurotransmitters can cause an increase in the likelihood of having ocd, state the two main neurotransmitters invloved?

  • serotinin and dopamine
  • cortisol and dopamine
  • testosterone and serotonin


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