PSY1011 Study Guide - Final Guide: Prenatal Development, Emerging Adulthood And Early Adulthood, Developmental Psychology

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Document Summary

The study of how and why the brain, body and behaviour changes over the lifespan. The challenge for developmental psychologists is finding the balance bw everyone"s uniqueness characteristics and patterns of change & growth that can be generalised. Perinatal (20 weeks of gestation to 28 days after birth) Emerging adulthood (18 to 25: prenatal development: conception to birth. Stages: zygote = fertilisation to 2 weeks, embryo = 2 weeks to 10 weeks (rapid cell divisions, foetus = 10 weeks (all major structures/organs have started to form) to birth. Identical (monozygotic) = one sperm and egg fuse, then split into two organisms in the same placenta. Fraternal (dizygotic) = two sperm and eggs fuse, each forming two different organisms in two different placentas. This has implications on the nature vs nurture debate. If development is determined entirely by nature, the identical twins (who have the same genes) should develop in the exactly the same ways.