Depression

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Across
  1. 2. high levels are released during fight or flight
  2. 5. _______ model suggests that there is an environmental trigger that affects the genes
  3. 7. evidence from twin studies are ____ because it is very difficult to distinguish nature from nurture
  4. 8. psychologists use this a lot to prove the nature aspect
  5. 9. the psychological explanation behind depression
Down
  1. 1. _________ __________ to depression is supported by twin studies
  2. 3. the biological explanation behind depression
  3. 4. chemical messages that get sent across the synaptic gap
  4. 6. the hormone which helps controls biological functions like sleep, aggression, appetite and mood