PS102 Lecture Notes - Lecture 6: Zygote, Prenatal Development, Fetus
Document Summary
Examines changes in biological, physical, psychological, and behavioural processes as we age. Critical period = age where experiences must occur. It is very rare when we say that something is only heredity or environment. What we usually say is which one contributes the most. Mapping change: no change: remains constant, continuous: gradual changes, stages: discontinuous changes, inverted u-shape: emerges early peaks diminishes with age, u-shape function: emerges early disappears re-emerges. Pros: subject stays constant, detailed info, no cohort differences. Compare different aged people at one point in time. Cons: different cohorts grew up in different time periods, different experiences, cultural and environmental changes, ex: wireless technology. All the good and all the bad of longitudinal and cross-sectional together. Sometimes inferred by what we see but must be tested. Zygote attaches to uterine wall (placenta) (can also happen during embryonic: embryonic stage: Most vulnerable during this time: fetal stage:
