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inclusive fitness theory
Also known as: inclusive fitness theory, inclusive fitness
Facts (12)
Sources
Evolutionary psychology - Wikipedia en.wikipedia.org 9 facts
claimComponents of fitness include the well-being of existing offspring, the parents' future reproduction, and inclusive fitness through aid to kin.
claimParental investment theory explains that parents invest in individual offspring based on the likelihood of those offspring being successful and improving the parents' inclusive fitness.
claimEvolutionary psychology researchers have explored human social behaviors such as infanticide, intelligence, marriage patterns, promiscuity, perception of beauty, bride price, altruism, and the allocation of parental care by testing predictions derived from the idea that conscious and unconscious behaviors have evolved to maximize inclusive fitness.
claimInclusive fitness theory posits that genes can increase the replication of copies of themselves by influencing an organism's social traits to assist the survival and reproduction of close relatives who carry identical copies of those genes.
claimW. D. Hamilton proved mathematically in 1964 that because close relatives share identical genes, natural selection can favor organisms that promote the reproduction and survival of related or similar individuals, thereby maximizing their inclusive fitness.
claimRobert Trivers suggested that the sex investing less in offspring will generally compete for access to the higher-investing sex to increase their inclusive fitness.
claimW.D. Hamilton's 1964 papers on inclusive fitness helped re-establish evolutionary thinking in psychology and social sciences by utilizing a gene-centered perspective on evolution.
claimInclusive fitness is defined as the sum of an organism's classical fitness (the number of its own offspring produced and supported) and the number of equivalents of its own offspring it can add to the population by supporting others.
claimIn 1964, evolutionary biologist William D. Hamilton proposed inclusive fitness theory, which emphasizes a gene-centered view of evolution.
Evolutionary Psychology | Internet Encyclopedia of Philosophy iep.utm.edu 3 facts
quoteWilliam Irons stated in 1979 that natural selection has created an extraordinary flexibility known as phenotypic plasticity that allows our behavior to assume the form that maximizes inclusive fitness across a wide variety of widely diverse habitats.
claimHuman behavioral ecologists argue that natural selection has created phenotypic plasticity, which allows human behavior to maximize inclusive fitness across diverse habitats.
claimA domain-general decision rule like 'Do that which maximizes your inclusive fitness' cannot efficiently guide behavior because the fitness impact of a design feature is inherently unobservable at the time the behavior occurs.