biological explanations

• genetics - research


  family studies - concordance rates

  identical twins - 48%

  siblings - 9%
• genetics research - negative

  could be due to shared environments as family
• genetics research twin studies

  compare identical (monozygotic) twins concordance rate to non identical (fraternal/dyzygotic) twins concordance rate
• twin studies concordance rates

  MZ - 48%

  DZ - 17%

  (the likelihood they will develop schizophrenia)
• neural correlates 


  brain activity and structure