IQ, Heredity, and the Environment

1. How stable is your IQ likely to be from ages 10 to 18?

2. How about your twin's IQ?

3. How well would you expect your IQ at age 10 predict your scholastic performance in late adolescence and your occupational attainment in adulthood?

4. What about prediction of scholastic performance and occupational attainment from your twin's 10-year IQ?

5. How might rearing environment have affected the IQs of you and your twin?

6. Does the similarity of your and your twin's 18-year IQ have anything to do with heredity?

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