PSYC 3420 Lecture Notes - Lecture 9: Neonaticide, John Bowlby, Nucleus Accumbens
21 Nov 2016
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Hamilton"s rule rb > c where: r= coefficient of relatedness. Inclusive fitness: evolutionary emergence of genes, genes that underlay behavior that influence individuals. Heart of kin selection theory, helping behaviour b/n two individuals can evolve if the benefit to the recipient is greater than cost to the donor. Genes should increase in frequency when this rule is in effect. Relatedness is important because of the coefficient b/n two people is equivalent to the probability that they share a gene for altruism not because they share a proportion of non- altruistic genes. Parental investment: aids in survival of the offspring. Inclusive fitness: cumulative effects of a gene on its possessor + kin who have inherited the same altruism gene. Kin selection: natural selection of genes underlying kin-helping tendencies. Kin altruism: altruistic behaviors and motives in service of helping kin. Definition: maternal attachment to infant that occurs during a critical period immediately after birth.
