1. Which is more important in how your personality develops – Nature or Nurture? -Nature – A person’s hereditary genetic makeup -Nurture – Treatment by parents, peers, community and society

2. The Controversy – Nature vs. Nurture Also known as Heredity vs. Environment controversy How could we construct an experiment, in a scientific way, to give some kind of answer to this controversy?

3. Twin Studies -Identical twins have the exact same genetic material -If raised separately, their environmental influences will be different

4. Scientific method 1. Begin with a question -Ex. “Is musical ability determined by nature or nurture?” 2. Form a hypothesis -Ex. “Musical ability is determined by nature” 3. One variable -Ex. The environment 4.A control -Ex. Twin raised by parents with no musical talent

5. Scientific method Cont’d 5. Interpret your results – Is hypothesis supported? 6. Remember – an experiment should be repeated several times before results are taken seriously.