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Delve into the origins of genes and the study of behavior inheritance through family, adoption, and twin studies. Discover how nature and nurture shape our traits.
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Behaviour and genetics Where do genes come from? Martin Sheen Charlie Sheen
Behaviour and genetics Genotype vs Phenotype
Behaviour and genetics What behavioral patterns can be inherited? • Religion? • Happiness? • Intelligence? • Extroversion (outgoingness)? • Morality? • Nervousness? • Aggressiveness? • Political attitudes? • Job preference?
Behaviour and genetics How could we find out to what extent behaviors can be inherited?
Family studies Any problems with this approach? Heritage vs environment?
Twin Studies Mono-Zygotic Twins Di-Zygotic twins are just siblings
Bouchard (1990): Minnesota Study of Twins Reared Apart Concordance rates for some characteristics
Bouchard (1990): Minnesota Study of Twins Reared Apart Concordance rates for some characteristics