wk10_Mod_35_LTR

wk10_Mod_35_LTR - Geneticand EnvironmentalInfluences...

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1 Genetic and  Environmental Influences  on Intelligence Module 35
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2 Genetic and Environmental  Influences on Intelligence Genetic and Environmental  Influences on Intelligence Genetic Influences Environmental Influences Group Differences in Intelligence Test  Scores The Question of Bias
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3 Genetic and Environmental Influences  on Intelligence No other topic in psychology is so passionately followed  as the one that asks the question, “Is intelligence due to  genetics or the environment?”   
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4 Genetic Influences Studies of twins, family members and adopted children  together support the idea that there is a significant  genetic contribution to intelligence.
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5 Adoption Studies Adopted children show a marginal correlation in verbal  ability to their adopted parents.
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Genetic Influences • How might genes influence the environment? – PASSIVE effect:  genetically related parents  provide an environment that is correlated with the  genotype of the child – EVOCATIVE effect child’s genotype influences  the responses elicited from others – ACTIVE effect:  genotype influences the child’s  selection of experiences. 6
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• Genotype-environment theory explains what 3  major findings? 1) Identical twins are more SIMILAR than  fraternal twins siblings declines from infancy on 3) Identical twins reared apart have unexpected  similarities 7 Genetic Influences
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8 Environmental Influences Studies of twins and adopted children also show:
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This note was uploaded on 12/05/2010 for the course MC 2000 taught by Professor Freeman during the Spring '08 term at LSU.

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wk10_Mod_35_LTR - Geneticand EnvironmentalInfluences...

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