Comparative statics of altruism and spite
نویسندگان
چکیده
منابع مشابه
Comparative statics of altruism and spite
The equilibrium outcome of a strategic interaction between two or more players may depend on the weight they place on each other’s payoff. A positive, negative or zero weight represents altruism, spite or complete selfishness, respectively. Paradoxically, the real, material payoff in equilibrium for a group of altruists may be lower than for selfish or spiteful groups. However, this can only be...
متن کاملAltruism, spite, and greenbeards.
Hamilton's theory of inclusive fitness showed how natural selection could lead to behaviors that decrease the relative fitness of the actor and also either benefit (altruism) or harm (spite) other individuals. However, several fundamental issues in the evolution of altruism and spite have remained contentious. Here, we show how recent work has resolved three key debates, helping clarify how Ham...
متن کاملSpite and Altruism in Gulls
SPITE AND ALTRUISM IN GULLS In recent years, a controversy has developed in evolutionary biology concerning the existence of altruistic behavior in species other than Homo sapiens if true altruism is proven to exist, Darwin's (1859) theory of natural selection would be inadequate to account for all of evolution. This is because Darwin assumed that individual organisms should always act in their...
متن کاملSperm Sociality: Cooperation, Altruism, and Spite
A swimming sperm cell appears to perfectly capture the individualist Darwinian struggle, as it frantically races onwards towards a waiting egg. Consistent with this imagery, sperm morphology and behaviour in many organisms appears exquisitely designed to maximise the chances of fertilisation of each individual sperm cell [1]. However, there are numerous less obliging cases where sperm seem poor...
متن کاملAn evolutionary analysis of the relationship between spite and altruism.
We investigate the selective pressures on a social trait when evolution occurs in a population of constant size. We show that any social trait that is spiteful simultaneously qualifies as altruistic. In other words, any trait that reduces the fitness of less related individuals necessarily increases that of related ones. Our analysis demonstrates that the distinction between "Hamiltonian spite"...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Games and Economic Behavior
سال: 2012
ISSN: 0899-8256
DOI: 10.1016/j.geb.2012.02.015