Psychology 1000 Chapter Notes - Chapter 12: Umbilical Cord, Y Chromosome, Imaginary Audience

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Terry Biggs

Document Summary

Developmental psychology: study of physical, cogniive and social/emoional changes. Cross-secional: compare diferent ages at the same ime. Longitudinal: test same cohort at diferent imes in their lives. Sequenial: combines cross secional and longitudinal: test several cohorts as they age. Concepion occurs when one sperm penetrates egg, creaing a zygote. Sex is determined by x or y chromosome in sperm: y chromosome has tdf gene which trigger the development of testes. Germinal stage: first 2 weeks of development, egg divides and becomes a mass of cells through cell division, zygote implants in lining of uterus. Embryonic stage: up to week 8, cell mass is now called an embryo, placenta and umbilical cord develop, organs and systems begin to form, heart starts beaing, looks like a human now. Fetal stage: 9th week, embryo is now called a fetus. Innate relexes: rooing (suck on inger near cheek, grasping, step, crawl. Percepion: poor vision (prefer paterns, faces, novelty, excellent auditory (prefer familiar voices)