Diathesis-stress explanation

• genes(diathesis) must interact with environmental influences(stress) to cause an effect
• Frazzetto et al


  found the link between low activity of the MAOA gene and aggression,but only in those who experienced a serious traumatic event before the age of 15

  Those who had a mutated version of the gene but werent aggressive had not experienced a traumatic event
• A combination of genetic influenced and an early traumatic experience predicts bullying