PSYC 2000 : Exam2studyguide
Document Summary
Behavior genetics: predicting individual differences (module 11) Behavior geneticists study our differences and weigh the relative effects of heredity and environment (nature versus nurture) Genome the set of complete instructions for making an organism, containing all the genes in that organism. Studying the effects of heredity and environment on two sets of twins, identical and fraternal. Identical one egg splits into two, same sex only. Fraternal two fertilized eggs, same or opposite sex. A number of studies compared identical twins reared separately from birth, or close thereafter, and found numerous similarities. Personalities, intelligence, abilities, attitudes, interests, fears, brain. Biological versus adoptive relatives waves, heart rate. Adoption studies, as opposed to twin studies, suggest that adoptees (who may be biologically unrelated) tend to be different from their adoptive parents and siblings. Parenting does not have an effect on biologically related and unrelated children. Temperament a person"s stable emotional reactivity and intensity. Identical twin express similar temperaments, suggesting heredity predisposes temperament.
