PSYCH101 Chapter Notes - Chapter 13-15: Toilet Training, Social Change, Limbic System

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Richard Ennis

Document Summary

Development psychology examines how people are continually developing physically, cognitively, and socially from infancy through old age. Much of the research on development psychology centers on three things: Nature/nurture (genetic inheritance and experience) continuity/ stages (is it a gradual, continuous process or proceed through a sequence of separate stages), stability/change (do our early personality traits persist through life or de we become different persons as we age) A zygote is produced when a sperm"s digestive enzymes is able to eat away the protective coating of an egg and penetrate through it, causing the two nucleus to fuse. Less than half of all zygotes survive beyond the first 2 weeks, but the ones that survive undergo cell division to become bigger. Zygote eventually attaches to the mother"s uterine wall. 9 weeks into conception the embryo becomes a fetus. Placenta transfers nutrients and oxygen to fetus and screens out potentially harmful substances.