PSY 236 Midterm: Exam 3 Study Guide Answers
Document Summary
The study of relative contributions of gene and environment to behavior. Underlying genetic code that may or may not vary the phenotype. They are a natural control; two people who are naturally controlled. Comes out of a twin study; number 0-1 that tells the relative proportion in the variation of phenotype that can be attributed to variation in the genotype. If the environment is restricted, any difference would be attributed to genes. If genes are restricted, any difference would be attributed to environment. What might heritability tell us about the causes of some behaviors/disorders? (hint: compare the heritability of moderate and severe mental retardation) Sever is likely due to a toxin, etc, not genes; 0 coefficient. Shared environment is what we usually think matters. Some psychologists say that family doesn"t matter because of findings from behavior genetics. We discussed reasons in class that this may be too strong of a statement.
