HLTC23H3 Lecture Notes - Lecture 3: Australopithecine, Civilization Iv, Subcutaneous Tissue
Document Summary
Heterochrony: became modern humans when pre-existing life-stages were altered (by neoteny or hypermorphosis) Bogin: argue against heterochrony-instead of alteration, an insertion of new life stages (chidhood) He/he2/hs: larger skull, larger brain, longer period of growth and development, childhood* (born with max 450 cc, anything above=growth) Australopithecines: lucy; 400-500 cc, no childhood yet, brain size very small, could be given at birth. Early homo: habilis and erectus, erectus period when childhood was selected for, adaptive advantage. Childhood: unique to humans, infancy decrease, lower period of breastfeed=have more kids, higher lifetime fertility, advantageous to early ancestors that was selected for. Bogin: childhood is vital insertion of life stage that allowed humans to thrive -improve evolutionary fitness: more children, more children that can survive into adulthood. Ecological model (1979): microsystem (immediate environment), mesosystem (interactions of family members), exosystem (broader community), macrosystem (global ideology), all the factors that can affect the health and development of children.
