Psychology 15 Lecture Notes - Lecture 13: Krishna Janmashtami, Ismail Ibn Sharif, Parental Investment

• School: Harvard University
• Department: Psychology
• Course: Psychology 15
• Professor: Joshua Greene

Document Summary

Sexual selection and sex differences o: evolution of cooperation, the social brain hypothesis, multilevel selection, cultural evolution. Evolution and social behavior: the early years o o. Stable molecules, replicating molecules, cells: cooperating molecules, eukaryotes: cooperating cells, multicellular organisms: cooperating eukaryotes. Sociality is the story of life on earth: reason why we have human biology at all is that individuals can succeed by joining together. Social individuals (wilson: we see cooperative behavior not only in our own bodies, but organisms cooperate as well o. Fire ants form a giant ant-ball in the case of flash floods: hive can survive the flood, krishna janmashtami. Elements of evolution: heritable variation there is variability in traits across individuals and these heritable traits can be o passed on from one individual to another. Selection individuals with certain traits survive in particular environments, whereas those without those traits do not.