منابع مشابه
Egalitarian despots: hierarchy steepness, reciprocity and the grooming-trade model in wild chimpanzees, Pan troglodytes
Biological market theory models the action of natural selection as a marketplace in which animals are viewed as traders with commodities to offer and exchange. Studies of female Old World monkeys have suggested that grooming might be employed as a commodity to be reciprocated or traded for alternative services, yet previous tests of this grooming-trade model in wild adult male chimpanzees have ...
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People exhibit group reciprocity when they retaliate, not against the person who harmed them, but against somebody else in that person's group. Group reciprocity may be a key motivation behind intergroup conflict. We investigated group reciprocity in a laboratory experiment. After a group identity manipulation, subjects played a Prisoner's Dilemma with others from different groups. Subjects the...
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Emil Artin was born on March 3, 1898 in Vienna, as the son of an art dealer and an opera singer, and he died on December 20, 1962 in Hamburg. He was one of the founding fathers of modern algebra. Van der Waerden acknowledged his debt to Artin and to Emmy Noether (1882–1935) on the title page of his Moderne Algebra (1930–31), which indeed was originally conceived to be jointly written with Artin...
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There are many attempts to generalize the reciprocity theorem for bianisotropic media. With formal introduction of notion of reaction for bianisotropic media, we can formulate reciprocity conditions for medium parameters. We can also extend the procedure used for a gyrotropic medium and consider the complementary, or the Lorentz-adjoint, bianisotropic medium, which satisfies the reciprocity the...
متن کاملInterdependent Preferences and Reciprocity
392 ∗ Sobel: University of California, San Diego. I presented a version of this paper at the First World Congress of the Game Theory Society and to my colleagues at the Center for Advanced Study in the Behavioral Sciences. I thank Eli Berman, Antonio Cabrales, Miguel CostaGomes, Vincent Crawford, David M. Kreps, Herbert Gintis, Mark Machina, Efe Ok, Luís Pinto, Matthew Rabin, Paul Romer, Klaus ...
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ژورنال
عنوان ژورنال: American Anthropologist
سال: 1944
ISSN: 0002-7294,1548-1433
DOI: 10.1525/aa.1944.46.2.02a00190