| 单词 | reciprocal altruism |
| 释义 | > as lemmasreciprocal altruism reciprocal altruism n. Biology behaviour that benefits another unrelated organism, carried out in the expectation of its being reciprocated; the theory holding that behaviour of this type has evolved because is likely to increase the chances of survival or reproductive success for the apparently altruistic organism. ΚΠ 1971 R. Trivers in Q. Rev. Biol. 46 42/2 Clearly, what matters for the evolution of reciprocal altruism is that the same two individuals interact repeatedly. 1986 Los Angeles Times (Nexis) 9 Nov. 40 Mutual dependency may have contributed, in cetaceans and in humans, to higher intelligence and produced individuals that practice sophisticated reciprocal altruism. 2006 R. Dawkins God Delusion 216 The other main type of altruism for which we have a well-worked out Darwinian rationale is reciprocal altruism (‘You scratch my back and I'll scratch yours’). < as lemmas |
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