PSYC 2000 Study Guide - Twin, Prenatal Development, Egocentrism
Document Summary
Human development is the scientific study of the changes that occur in people as they age from conception until death. Longitudinal design studies the same group of people over several years. Cross- sectional design studies several different age groups and look at them all at the same time. Cross- sequential design starts as a cross- sectional design then follows those groups as a longitudinal design. The nature- only side states that personalities are influenced by genetic factors and remain consistent across the life span. Experiences make us who we are. For developmental psychologists, twins provide an important way to look at the contribution of nature and nurture to human development. Researchers have shown that identical twins raised together are more similar than fraternal twins raised together in traits. Identical twins separated early in life and raised apart are more similar in these traits than are fraternal twins raised together.
