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Heredity and Environment

Heredity and Environment. Unit3. People argue about whether human behavior is instinctive (heredity) or learned (environment) Heredity – transmission of characteristics from parents to the offspring How much do you learn and how much is just inborn?

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Heredity and Environment

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  1. Heredity and Environment Unit3

  2. People argue about whether human behavior is instinctive (heredity) or learned (environment) • Heredity – transmission of characteristics from parents to the offspring • How much do you learn and how much is just inborn? • Inherited factors and environmental conditions always act together in complicated ways

  3. Question of Nature vs. Nurture • Nature refers to the characteristics people inherit, their biological makeup • Nurture refers to the environmental factors, such as family, culture, education, and individual experiences • Sir Francis Galton became one of the first to stress the importance of nature; published book in 1869 Hereditary Genius which analyzed families • He concluded that that success ran in families and concluded heredity was the cause • John Watson stressed the importance of environment

  4. Genes and Behavior • Genes are the basic units of heredity • Genes affect behavior through their role in building and modifying the physical structures of the body • Those structures interact with the environment and produce behavior

  5. Twin Studies • Using page 175-176, take notes over the studies that have been done with twins • How does Nature vs. Nurture play a role in the studies • On page 176 do questions 1, 2, 3, 4

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