Describe the influence of nature and nurture on intelligence: what is heritability?

Define intelligence. Describe the influence of nature and nurture on intelligence: what is heritability? What do twin studies tell us about the importance of genetics on intelligence? What about how children who have been adopted and how their intelligence scores relate to their biological parents? What are some environmental influences on intelligence? Discuss gender differences in intelligence: do men or women have higher verbal memory? Nonverbal memory? Emotion-detecting ability? Math aptitude? Spatial ability? What does it mean to say men have greater variability in intelligence? Finally, discuss stereotype threat and how that might affect scores on intelligence tests and in school. We use Psychology in Action 12th edition book. If needed, more reference pages can be used than 2.