PSYA02H3 Chapter Notes - Chapter 12: Jean Piaget, Low Birth Weight, Preterm Birth
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PSYA02H3 Full Course Notes
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Cross sectional study: a study of development in which individuals of different ages are compared at the same time: more convenient, avoids problems associated with testing the same individual over and over again. Longitudinal study: compares observations of the same individuals at different times of their lives. 38 weeks (266 days: prenatal period: nine months between conception and birth, genetic contribution genotype, x chromosome inactivation occurs early in females, it affects all subsequent cellular reproduction. The most important androgen is testosterone: these hormones stimulates male growth, female sex organs to not need to be stimulated by a hormone. Fetal stage: lasts for 7 months: appearance of bone cells and ends with birth, movement kicking, at the end is 50cm long and 3. 5 kg. 4th month: sleeps and wakes, heart beat loud enough. Mother"s diet is really important: malnourishment: abnormal development of nervous system of fetus. Physical and perceptual development in infancy and childhood.
