|
Reciprocity (evolution)
Reciprocity in evolutionary biology Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biolo ... refers to mechanisms whereby the evolution of cooperative or altruistic behaviour may be favoured by the probability of future mutual interactions. A corollary is how a desire for revenge can harm the collective and therefore be naturally selected against. Main types Three types of reciprocity have been studied extensively: * Direct reciprocity * Indirect * Network reciprocity Direct reciprocity Direct reciprocity was proposed by Robert Trivers as a mechanism for the evolution of cooperation. If there are repeated encounters between the same two players in an evolutionary game in which each of them can choose either to "cooperate" or "defect", then a strategy of mutual cooperation may be fav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Reciprocity (social Psychology)
In social psychology, reciprocity is a social norm of responding to an action executed by another person with a similar or equivalent action. This typically results in rewarding positive actions and punishing negative ones. As a social construct, reciprocity means that in response to friendly actions, people are generally nicer and more cooperative. This construct is reinforced in society by fostering an expectation of mutual exchange. While the norm is not an innate quality in human beings, it is learned and cemented through repeated social interaction. Reciprocity may appear to contradict the predicted principles of self-interest. However, its prevalence in society allows it to play a key role in the decision-making process of self-interested ''and'' other-interested (or altruistic) individuals. This phenomenon is sometimes referred to as reciprocity bias, or the preference to reciprocate social actions. ''Reciprocal'' actions differ from ''altruistic'' actions in that reciproca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Evolutionary Biology
Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biology emerged through what Julian Huxley called the Modern synthesis (20th century), modern synthesis of understanding, from previously unrelated fields of biological research, such as genetics and ecology, systematics, and paleontology. The investigational range of current research has widened to encompass the genetic architecture of adaptation, molecular evolution, and the different forces that contribute to evolution, such as sexual selection, genetic drift, and biogeography. The newer field of evolutionary developmental biology ("evo-devo") investigates how embryogenesis is controlled, thus yielding a wider synthesis that integrates developmental biology with the fields of study covered by the earlier evolutionary synthesis. Subfields ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Revenge
Revenge is defined as committing a harmful action against a person or group in response to a grievance, be it real or perceived. Vengeful forms of justice, such as primitive justice or retributive justice, are often differentiated from more formal and refined forms of justice such as distributive justice or restorative justice. Function in society Social psychologist Ian Mckee states that the desire for the sustenance of power motivates vengeful behavior as a means of impression management: "People who are more vengeful tend to be those who are motivated by power, by authority and by the desire for status. They don't want to lose face". Vengeful behavior has been found across a majority of human societies throughout history. Some societies encourage vengeful behavior, which is then called a feud. These societies usually regard the honor of individuals and groups as of central importance. Thus, while protecting their reputation, an avenger feels as if they restore the pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Robert Trivers
Robert Ludlow "Bob" Trivers (; born February 19, 1943) is an American evolutionary biologist and sociobiologist. Trivers proposed the theories of reciprocal altruism (1971), parental investment (1972), facultative sex ratio determination (1973), and parent–offspring conflict (1974). He has also contributed by explaining self-deception as an adaptive evolutionary strategy (first described in 1976) and discussing intragenomic conflict. Education Trivers studied evolutionary theory with Ernst Mayr and William Drury at Harvard from 1968 to 1972, when he earned his PhD in biology. At Harvard he published a series of some of the most influential and highly cited papers in evolutionary biology. His first major paper as a graduate student was "The evolution of reciprocal altruism", published in 1971. In this paper Trivers offers a solution to the longstanding problem of cooperation among unrelated individuals and by doing so overcame a crucial problem for how to police the sys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Natural Selection
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the Heredity, heritable traits characteristic of a population over generations. Charles Darwin popularised the term "natural selection", contrasting it with selective breeding, artificial selection, which is intentional, whereas natural selection is not. Genetic diversity, Variation of traits, both Genotype, genotypic and phenotypic, exists within all populations of organisms. However, some traits are more likely to facilitate survival and reproductive success. Thus, these traits are passed the next generation. These traits can also become more Allele frequency, common within a population if the environment that favours these traits remains fixed. If new traits become more favoured due to changes in a specific Ecological niche, niche, microevolution occurs. If new traits become more favoured due to changes in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ethic Of Reciprocity
Ethics is the philosophy, philosophical study of Morality, moral phenomena. Also called moral philosophy, it investigates Normativity, normative questions about what people ought to do or which behavior is morally right. Its main branches include normative ethics, applied ethics, and metaethics. Normative ethics aims to find general principles that govern how people should act. Applied ethics examines concrete ethical problems in real-life situations, such as abortion, treatment of animals, and Business ethics, business practices. Metaethics explores the underlying assumptions and concepts of ethics. It asks whether there are objective moral facts, how moral knowledge is possible, and how moral judgments motivate people. Influential normative theories are consequentialism, deontology, and virtue ethics. According to consequentialists, an act is right if it leads to the best consequences. Deontologists focus on acts themselves, saying that they must adhere to Duty, duties, like t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Generalized Exchange
Generalized exchange is a type of social exchange in which a desired outcome that is sought by an individual is not dependent on the resources provided by that individual. It is assumed to be a fundamental social mechanism that stabilizes relations in society by unilateral resource giving in which one's giving is not necessarily reciprocated by the recipient, but by a third party. Thus, in contrast to direct or restricted exchange or reciprocity, in which parties exchange resources with each other, generalized exchange naturally involves more than two parties. Examples of generalized exchange include; matrilateral cross-cousin marriage and helping a stranded driver on a desolate road. Reciprocity norm All forms of Social exchange theory, social exchange occur within structures of mutual dependence, that is, structures in which actors are mutually, or reciprocally dependent on one another for valued outcomes. A structure of mutual or reciprocal dependence is defining characteris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Polytely
__NOTOC__ Polytely (from Greek roots ''poly-'' and ''-tel-'' meaning "many goals") comprises complex problem-solving situations characterized by the presence of multiple simultaneous goals.Funke 2001, p.72. These goals may be contradictory or otherwise conflict with one another, requiring prioritisation of desired outcomes.Funke 2001, p.72. Polytely is a feature of complex problem-solving that adds difficulty to finding an optimum solution. Funke describes polytely as a feature "not... inherent in a system, but eferringto certain decisions of the experimenter", especially decisions relating to what goals are to be followed in solving the problem.Funke 2001, p.73. In the complex problem of nuclear waste disposal, Flüeler cites both trust between states (as a factor in nuclear proliferation: "Some states disarm whilst others re-arm – both do it for the sake of our planet's peace"), and safe and sustainable disposal of nuclear waste as situations where considering in terms of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Reciprocal Altruism
In evolutionary biology, reciprocal altruism is a behaviour whereby an organism acts in a manner that temporarily reduces its fitness while increasing another organism's fitness, with the expectation that the other organism will act in a similar manner at a later time. The concept was initially developed by Robert Trivers to explain the evolution of cooperation as instances of mutually altruistic acts. The concept is close to the strategy of " tit for tat" used in game theory. In 1987, Trivers presented at a symposium on reciprocity, noting that he initially titled his article "The Evolution of Delayed Return Altruism," but reviewer W. D. Hamilton suggested renaming it "The Evolution of Reciprocal Altruism." While Trivers adopted the new title, he retained the original examples, causing confusion about reciprocal altruism for decades. Rothstein and Pierotti (1988) addressed this issue at the symposium, proposing new definitions that clarified the concepts. They argued that Delayed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Martin Nowak
Martin Andreas Nowak (born April 7, 1965) is an Austrian-born professor of mathematics and biology at Harvard University. He is a researcher in evolutionary dynamics, and has made contributions to the fields of evolutionary theory and viral dynamics. He held faculty positions at Oxford University and the Institute for Advanced Study in Princeton, before being recruited by Harvard in 2003. During this time, Jeffrey Epstein funded a portion of Nowak's work, helping to set up a center for studying cooperation in evolution. He was the director of Harvard's Program for Evolutionary Dynamics (PED) from 2003 until 2020. He was suspended from supervising undergraduate research for two years and his institute permanently closed due to Epstein’s continued use of a personal office in the PED building for over ten years after his conviction for sex crimes. Early life and education Nowak was born in Vienna, Austria, on April 7, 1965. He studied at Albertus Magnus Gymnasium and the Univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
