Biological explanation of depression

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Across
  1. 3. one criticism of the biological explanation of depression
  2. 7. the biological explanation ignores these factors
  3. 8. drug treatment used to manage symptoms of depression
  4. 10. the alternative explanation to the biological explanation
  5. 11. the type of disorder that depression is classified as in the DSM
  6. 12. Psychologist who found 46% concerned rates for depression for MZ twins
Down
  1. 1. an enzyme which breaks down neurotransmitters
  2. 2. when neurotransmitters are taken back to the pre-synaptic neurone
  3. 4. weeks the length of time symptoms need to be present for a diagnosis
  4. 5. group of neurotransmitters implicated in depression
  5. 6. stress the explanation which considers biological and environmental factors
  6. 9. neurotransmitter which controls levels of noradrenaline