Psychology 1000 Chapter Notes - Chapter 12: Umbilical Cord, Testis Determining Factor, Fetal Alcohol Spectrum Disorder

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Fazakas- De Hoog

Document Summary

Inverted u-shaped function emerges after birth, peaks and disappears with age: u-shaped function present early in life, disappears temporarily and re-emerges later. Cross-sectional design- a research design that simultaneously compares people of different ages at a particular point in time. Longitudinal design- research that repeatedly tests the same cohort as it grows older. Sequential design- repeatedly testing several age cohorts as they grow older. 3 stages: germinal first two weeks, fertilization of egg from sperm. Zygote- fertilized egg: embryonic stage end of second week- 8th week after conception, cell mass called embryo. Placenta (contains membranes that allow for nutrients to pass from mothers blood to umbilical cord) and umbilical cord (contains blood vessels that carry nutrients and oxygen to embryo and wsat products back from embryo to mother) develops. Bodily organs and systems begin to form: fetus lasts until birth- muscles become stronger. Genetic and sex determination: y-chromosome contains specific gene: tdf (testis determining factor) gene- triggers male sexual development.