Biological approach

• What is it about?

  Suggests that to fully understand human behaviour, we must first look at biological structures and processes
• What is a DZ twin?

  A twin that shares 50 percent of the same genes
• What is an MZ twin?

  Twins that have 100% of the same genes (identical)
• What is genotype?

  A person's genes
• What is phenotype?

  The way genes are expressed through physical, behavioural and psychological characteristics.
• Pros of BA

  Real world applications due to drugs to treat mental disorders
• Cons of BA

  Drugs don't work for everyone, so its not ONLY biological