PSYCO105 Lecture Notes - Lecture 5: Classical Conditioning, Operant Conditioning, Fetal Alcohol Spectrum Disorder
29 Jan 2018
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Document Summary
Cross-sectional design: a research design that simultaneously compares people of different ages at a particular point in time. Longitudinal design: research repeatedly testing the same cohort as it grows older. Sequential design: repeatedly testing several age cohorts as they grow older. Three stages of prenatal development: germinal stage - rst 2 weeks, zygote (fertilized egg), attaches to uterus after 10-14 days, embryonic stage - end of week 2 - week 8. The placenta and umbilical cord, develop at the start of this stage. Located on the uterine wall, the placenta contains membranes that allow nutrients to pass from the mother"s blood to the umbilical cord. In turn, the umbilical cord contains blood vessels that carry these nutrients and oxygen to the embryo, and waste products back from the embryo to the mother. By 28 weeks the fetus attains the age of viability, meaning that it is likely to survive outside the womb in case of premature birth.
