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Genetics - PowerPoint PPT Presentation

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Genetics
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  1. Genetics

  2. Nature vs. Nurture

  3. Methodology • Twin studies • Adoption studies

  4. Minnesota twin study, Bouchard et al. (combo) • identical twins more similar than fraternal

  5. Temperaments • Buss & Plomin • Emotionality • Sociability • Activity level

  6. Interaction of Nature & Nurture Environment effects genes • PKU • MAO and antisocial behavior In males: Low genotype + maltreatment  antisocial beh. High genotype no inc. antisocial beh even with maltreatment Low genotype without maltreat.  slight inc, but not significant

  7. Genes effect environment Examples: Emotionality and attachment Physical attractiveness and self-esteem

  8. Environments • Shared (relatively little effect compared to genes) • Non-shared Within Family Outside Family

  9. Genes and Personality • No single gene, • instead multiple genes in complex combinations and patterns, • turned on and off by experiences

  10. Implications??? • When we can genetically engineer personality, should we ???