PSYB30H3 Lecture Notes - Twin, Gene-Environment Correlation, Twin Study
Document Summary
Chapter 6 genetics. the researchers looked for genetics and environmental differences between the youths who were depressed and those who were not. The amazing thing is that they found- nothing! They found no impact of either genes or environment can rates of depression. genotype: the genetic makeup that codes for a specific trait. Both genes and environment affect our personalities behavioural genetics: the study of the genetic and environmental contributions to individual differences in personality and behavior. Behavior genetics answers question how do genes and environment work together to make us the kind of people we are. The best characterization of nature-nurture issue is that nature and nurture transact. That is, genes and environment can work separately, together or they may influence one another genotype-environment interaction: combination of nature and nurturance. Genotype- environment correlations may be passive, reactive or active. Heritablility (h2) is the amount of observed individual differences in same characteristics that can be accounted for genetic differences.
