01:830:101 Lecture Notes - Lecture 5: Twin Study, Heredity, Heritability

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01:830:101 Full Course Notes
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01:830:101 Full Course Notes
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Document Summary

Nature view: humans enter the world with an inborn store of knowledge. Nurture view: knowledge is acquired through experiences and interactions with the world. Range of reaction : genetic makeup establishes range of possible developmental outcomes (genetics give a range of which traits can lie, but environment sees where you show up on that range) Genotype-environment interaction : different characteristics result from different combinations of genes and environment. Behavioral genetics : study of genetic bases of individual differences in behavior and personality. Heritability : statistical estimate of contribution of heredity to individual differences. Relies on correlational research methods (e. g. , twin studies) Family studies : measure degree to which biological relatives share certain traits. Adoption studies : compare adopted children to adoptive families and biological families. Twin studies : compare pairs of monozygotic and same-sex dizygotic twins. Monozygotic twins: identical twins; share 100% genes. Dizygotic twins: fraternal twins; share 50% genes (on average)

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