Bullying Genes Researchers

Question 1

Ball eyes al (strength)

Answer 1

Studied 1,116 10year old twins and found concordance rates between MZ twins (share 100% genes) 63% compared to DZ twins (share around 50% of genes) 33%. Genetic factors explained 61% of bullying behaviour variation

Question 2

Frazzetto et al (strength)

Answer 2

People with low activity MAOA genes were only aggressive if they experienced a major trauma before age of 15

Question 3

Vassos et al
Butovskaya et al
Weakness

Answer 3

Vassos- no link between any single gene and aggressive behaviour suggesting maybe other genes are involved

Butovskaya- found that certain variants in the DRD2 receptor were associated with increased aggression