01:830:101 Lecture Notes - Lecture 6: Twin Study, Twin, Behavioural Genetics

• School: Rutgers University
• Department: Psychology
• Course: 01:830:101
• Professor: K.Brynildsen

Document Summary

Genes - basic units of heredity (nature) Interactions between nature and nurture (genes and environment) Nature view - humans enter the world with an inborn store of knowledge. Nurture view - knowledge is acquired through experiences and interactions with the world. Genotype-environment interaction - different characteristics result from different combinations of genes and environment. Range of reaction - genetic makeup establishes range of possible developmental outcomes. Behavioral genetics - study of genetic and environmental bases of individual differences in behavior and personality. Heritability - statistical estimate of contribution of heredity to individual differences. Family studies - measure degree to which biological relatives share certain traits. Adoption studies - compared adopted children to adoptive families and biological families. Twin studies - compare pairs of monozygotic and same-sex dizygotic twins. Monozygotic (mz) twins - share 100% genes. Dizygotic twins (dz) - share 50% genes (on average) Adoption twin studies - compare mz twins separated in infancy and mz twins reared apart.