PSY 100 Lecture Notes - Lecture 4: Prenatal Development, Twin, Heredity

• School: University of Kentucky
• Department: Psychology
• Course: PSY 100
• Professor: Christopher Ray Archer

Document Summary

Behavioral genetics - study of the interplay between heredity and environmental influences on human development. Family studies - is there a relationship (correlation) between characteristics of parents and children and/or between siblings. Twin studies - identical twins (monozygotic {mz}) 100 % of gene shared. Fraternal twins (dizygotic {dz}) share 50 % of gene. Heritability - extent to which individual variation can be attributed to genetics. Characteristics of physical environment in which you were raised. Studies how we grow, develop and change throughout our lifespan. Cross-sectional - study in which different groups of people (of different ages) are studied at one point in time. Longitudinal - study in which the same group of people are studied at multiple points in time. Begins at conception - fertilization of the egg (zygote) Father determines sex of child ( x or y ) Teratogens - agents in prenatal environment that damage process of development.