Psychology 1000 Chapter Notes - Chapter 3-4: Thalamus, David Suzuki, Neuroplasticity

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Lynda Hutchinson

Document Summary

Cross-cultural studies have found consistent differences between males and females. Mating preferences such as age predict status & dominance in men and fertility in women. The amount of the variation in a trait that is attributed to genetic differences among individuals within a group. Similar environment= higher heritability (ex: identical twins living in the same home) Infer heritability by studying people whose genetic similarity is known. Separate role of genetics & environment by studying adopted children. Another approach compares identical (monozygotic single sperm then splits in two, share all of their genes) with fraternal (dizygotic: separate eggs fertilized by separate sperm, share only about half of their genes) twins. If identical more similar than fraternal twins, greater the genetic influence. Also study twins separated early in life & raised apart. Iq scores of identical twins are more highly correlated than those of fraternal twins. Also, scores of adopted children are highly correlated with their biological parents.