PSYC 102 Lecture Notes - Lecture 6: Twin, Twin Study, Selective Breeding
61
PSYC 102 Full Course Notes
Verified Note
61 documents
Document Summary
Aristotle: tabula rasa there is nothing in the mind that does not first come in from the external world through the senses. Plato: assumed that we inherit character & intelligence and that certain ideas are inborn. Heritability: how much variation in a phenotypic trait in a population is due to genetic variation among individuals in that population. Methods: selective breeding in animals, family, twin, adoption studies, molecular genetics. The intentional mating of two animals in an attempt to produce offspring with desirable characteristics or for the elimination of a trait. The environment can affect genetic differences (cooper and zubek) Animals bred for: activity level, exploratory behavior, eating behavior, aggressive behavior, wariness. Both rely on correlation between pairs of people who vary in their genetic association. 100% genetic similarity (identical twins: dizygotic twins dz. 50% genetic similarity (fraternal twins: parent & biological child. 50% genetic similarity: parent & adopted child. Mz are always same sex; dz are not.
