Reciprocal altruism in humans refers to an individual behavior that gives benefit conditionally upon receiving a returned benefit, which draws on the...

In evolutionary biology, reciprocal altruism is a behaviour whereby an organism acts in a manner that temporarily reduces its fitness while increasing...

parochial altruism may have evolved in humans to promote high levels of in-group cooperation, which is advantageous for group survival. Parochial altruism is...

Altruism is the principle and practice of concern for the well-being and/or happiness of other humans or animals above oneself. While objects of altruistic...

among biologists interested in the evolution of social behaviour. In 1971 Robert Trivers introduced his reciprocal altruism theory to explain the evolution...

themselves. Reciprocal liking has a significant impact on human attraction and the formation of relationships. People that reciprocally have a liking...

Kohlrieser. Reciprocal actions differ from altruistic actions in that reciprocal actions only follow from others' initial actions, while altruism is the unconditional...

as a whole. In humans, altruism is both more likely and on a larger scale with kin than with unrelated individuals; for example, humans give presents...

criticism is that language does not work on the basis of reciprocal altruism anyway. Humans in conversational groups do not withhold information to all...

The theory of reciprocal altruism can be used to explain behaviors that are performed by a donor who receives some sort of benefit in the future. When...