PSYA02H3 Lecture Notes - Lecture 7: Sexual Differentiation, Fetus, Teratology
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PSYA02H3 Full Course Notes
Animals use the quantity strategies where they make a lots of offspring and they have enough survive. For humans they have very few offspring but they require lots of attentions and takes a lot to raise them. Cross sectional study: compare different individual in different ages and groups and study how they react to certain things. Longitudinal study: study specific individual measuring certain traits over time and example, study 1 children over certain ages. Prenatal stage ( 38 week): different stages in that: zygote: first two weeks, embryonic stage: two to 8 weeks, fetal stage: last seven months. Zygote sperm fertilize the egg egg starts to divide and multiply and differentiate into different kinds of cells but they all have the same dna. Fetal stage bones start to form and the baby really starts to grow this is after two months. Very difficult to know when the baby comes human because this is a very continuous process.