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Interaction: Genes & Environment Evolution provides Genes Sex = mixing of Genes Unique Genetic Blueprint Prenatal Influences unless: MZ twins Predispositions Experience Unique Individual Evolution Francis Galton (1822 - 1911) John Stuart Mill (1806 - 1874) John Locke - tabula rasa Nativism Nature Heredity Genes versus versus versus versus How does environment …? How do genes … ? Empiricism Nurture Environment Learning Evolution : Darwin : “ The Origin of Species “ (1859) 1. Natural Selection 2. Evolutionary Adaptation Genetic Variability: 1. Genetic reshuffling - sex 2. Mutations Environmental Adaptations Behavioral Adaptations Learning Culture Video: W..Tick? IQ studies r = correlation coefficient Identical twins, reared apart : r = 0.70 Identical twins, reared together : = 0.90 Fraternals (together) : = 0.60 Fraternals (apart) : = 0.30 Assume: environments are random, as in general population (statistical assumption). If so: Identicals reared apart : Video: Symposium r = 0.40
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