Personality Pschology

  1. A friend tells you that twin studies are ideal for studying whether or not personality traits are inherited. Explain what twin studies are and why monozygotic twins are standard for these studies. What are the strengths and weaknesses of a monozygotic twin study? Importantly, specifically address why monozygotic twin studies DON’T rule out the effect of the environment on our personalities. (10pts) 2. From the perspective of neuroscience, why are many drugs addictive? In your answer, address neurotransmitters and brain structures theoretically related to addiction. Additionally, what personality characteristics are related to the usage of addictive substances?