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6. Evolutionary explanations suggest depression is:

  • An honest signal of need, seeking social support
  • A display of attention-seeking behaviour
  • A result of our rapidly changing EEA (Enviroment of evolutionary adaptation)

7. What is the concordance rate for monozygotic twins and depression?

  • 42%
  • 20%
  • 46%
  • 36%

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

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

9. What percentage of first-degree relatives of probands have depression?

  • 20%
  • 10%
  • 30%
  • 25%

10. 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