PSY-311 Study Guide - Final Guide: Donner Party, Outcrossing, Reciprocal Altruism
28 Sep 2016
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Kin selction- individuals differ in parental car eand helping behavior it affects survival of their pffspring and relatives. Direct- diff among individuals production of surviving descendant kin; want off spring to survive and reproduce. Indirect selection- individuals differ in their effects on the survival of relatives; wants to help out other relatives to some degree because they have similar genes too. Share a certain percentage of gene with other individuals. People who marry third cousin has better reproductive success then with strangers. Paentla investment- time and energy parents invest to raise young and risks incurred protecting them. Trivers theory- the sex that invests the most inits young will evolve to bemore selective in partner choice. Weaning one child to free up resources for siblings: eg. Conflict for attention of one child vs all offspring. Estimate on hunter gather groups that we evolved from. Death of a child causes more intense grief than other close relationships.
