PS271 Lecture Notes - Lecture 6: Phineas Gage, Mania, Twin
Document Summary
Week 6 day 1 monday february 10, 2014. Epigenetic effects determine how genes are expressed: change through experience. Epigenetic effects: one twin can get more blood from the ambilical cord, can share membrane cell in the mother, higher risk of birth defects. If they share a placenta or have one of their own: blood supply travel and remove toxins, their own then they are affected with different toxins depending on how well their placenta is. Video: reunited twins - dr. nancy segal: twin studies are very insiteful, nancy is a twin herself. Video: epigentic factors: cory and eric, twins but cory is much smaller than eric, regularily weighted, height, and iq test is taken, cory"s iq raised quickly and now they are at the same level of iq. Intelligence is in the genes: one twin gets more nutrition while in the womb, young children need exposure (very stimulating environment, everyone has an iq range.
