PSYC14H3 Chapter Notes - Chapter 11: Lactase, Melanin, Amylase
Document Summary
Chapter 10 physical health bipedal hominids more than 3 million years ago freed hands to carry food, cooled the body (- amount of direct sunlight on body), long distance travel. Laetoli footprints: wider front part of foot, big toe separated from second toe, pronounced arch. Shoe wearing + modern humans shape of feet = cultural product o o. Running diff depending on bare feet (fore-feet or mid-feet) or with shoes (rear-feet) Cultural experiences do not just shape the way that we think, they can also affect our bodies and our health: psychological variables are linked to our physical health (variables influenced by culture) Biological variability of humans two explanations for biological variations of humans. 1. subject to different selection pressures over many generations innate biological difference: people living in different cultures have experiences within their own lifetimes that have impact on their biology acquired biological differences.
