Biological Explanations Of Depression

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1. Evolutionary explanations suggest depression is:

  • A result of our rapidly changing EEA (Enviroment of evolutionary adaptation)
  • An honest signal of need, seeking social support
  • A display of attention-seeking behaviour
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2. Why isn't the relationship between serotonin and depression straightforward?

  • Lowering serotonin in individuals who had never had depression had not effect on mood
  • Lowering serotonin in individuals who had never had depression increased mood
  • In some cases high serotonin can cause depressive states

3. What is an issue with animal studies?

  • They provide evidence that we can't gain from humans
  • We can't generalise them to humans
  • It is unethical for the animals in all cases

4. When compared to a placebo SNRI's (serotonin-noradrenaline re-uptake inhibitors) were:

  • more effective
  • less effective
  • not significantly different in outcome

5. How do insecticides increase the odds of developing depression?

  • Disturb serotonin levels in the brain
  • Alter noradrenaline levels in the brain
  • They don't, they reduce the risk


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