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Genetics

Genetics. Nature vs. Nurture. Methodology. Twin studies Adoption studies . Minnesota twin study, Bouchard et al. (combo) identical twins more similar than fraternal. Temperaments . Buss & Plomin Emotionality Sociability Activity level. Interaction of Nature & Nurture.

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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. Environments • Shared (relatively little effect compared to genes) • Non-shared Within Family (birth order, diff. treatment, events) Outside Family (peers, school, events)

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

  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 ???

  11. Evolutionary Psychology

  12. Darwin • Natural and Sexual Selection • Basic assumptions

  13. Example Gender Differences (Men are from Mars...)

  14. Criticisms • Post-hoc explanation NOT proof (not entirely fair criticism) • Alternative interpretations • Does not explain individual differences • Is change possible??? Evolution marches on!

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