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Heredity and the Environment. Key Terms: Heredity, Twin Studies. Nature or Nurture? . Rousseau We are born with everything that makes us who we are Noble savages to be corrupted by society Locke Babies are blank slates; no knowledge or skills Experiences determine who we become.
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Heredity and the Environment Key Terms: Heredity, Twin Studies
Nature or Nurture? • Rousseau • We are born with everything that makes us who we are • Noble savages to be corrupted by society • Locke • Babies are blank slates; no knowledge or skills • Experiences determine who we become
Victor: The Feral Child of Aveyron • Found around age 12 • Could not walk upright or talk • Thought to be mentally unsound • Jean-Marc Itard thought otherwise
Nature AND Nurture? Mental Disease Twin Jims Identical twins separated at birth Shared many things in common normally considered “nurture” traits I.E. Drinking habits, vacationing spots, jobs • If one twin is schizophrenic, the other is 3x more likely to become so • Not always going to happen
Twin Studies • Identical twins = identical DNA • Reveals importance of genes in acquiring certain traits • Twins separated at birth
Videos • Twins: Epigenetics • Twins: Is is All in the Genes?