PSY BEH 100 Lecture Notes - Lecture 9: Physical Attractiveness, Extraversion And Introversion, Sociosexual Orientation
30 Apr 2017
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Document Summary
Dual inheritance when a genetic adaptation leads to a cultural adaptation, that is cultural evolution. When the cultural adaptations developed feed back and change what we a genetically selected for. An adaptation emerged as a consequence of a domestication of animals. Haplotype came under strong selection pressure 5-10kya among europeans. Convergent evolution (cultural - domestication | adaptive - advantageous to be able to digest) independently arose at least once more in sub saharan africa 2. 7 - 6. 8kya. Suggest pastoral history to hadza hunter-gatherers (gene for lactose tolerance) The man who brought fire (the bringing of agriculture and the arts) fire allowed us to have that brain growth. Having the ability to control fire, led to a shrinkage of our guts because of what fire afforded us. Smaller, less metabolically expensive digestive system (a lot of the energy became more available for other parts of our body - i. e. our brain)
