11 - 10/11/10 Behavioral Genetics, Evolutionary Theory, and...

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10/11/10 Behavioral Genetics, Evolutionary Theory, and Personality Behavioral Genetics o Nature vs. Nurture Genetic Variation o Genotype- genetic structure of a person o Phenotype- physical and behavioral traits of a person Three research methods o Selective Breeding Animal Studies (dogs, etc.) Rat study concluded genes play a role in response to alcohol addiction and withdrawal Nazi Germany o Twin studies Monozygotic twins Developed from the same egg Identical Dizygotic twins Two separate eggs Share approximately 50% of genes Shared environment Often share the same environment o Any difference in behavior can be attributed to environment effects (or error) o Adoption Study Compare biological parent to their adopted children Compare adopted parents to their adopted children Any influence the adopted parents have on their adopted children are due to environment Heritability Coefficient o The statistic behavioral geneticists use to determine the extent to which
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This note was uploaded on 12/07/2011 for the course PSYC 330 taught by Professor Hicks during the Fall '10 term at Texas A&M.

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11 - 10/11/10 Behavioral Genetics, Evolutionary Theory, and...

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