(al-troo-iz-um) Altruistic behavior between unrelated individuals; believed to produce some benefit to the altruistic individual in the future when the current beneficiary reciprocates.

 The idea that people perform altruistic behaviors because they expect that others will perform altruistic behaviors for them in turn.

The trading of altruistic acts by individuals at different times, i.e., the payback to the altruist occurs some time after the receipt of the act. recognition surface

A type of helping behavior that is perpetuated when one individual helps another at some future time the second individual returns to kindness either to their first benefactor or his or her progeny.

Reciprocal Altruism refers to the human social idea and expectation that if a person performs an altruistic act, other people will perform altruistic acts in return. For instance, a person might belie [..]

Exchange of favors by two individuals in which one individual temporarily sacrifices potential fitness in expectation of a return.

An apparently altruistic behavior performed with the understanding that the recipient will reciprocate at some future date.

In sociobiology, the “Biological Golden Rule,” said to account for altruistic behaviour among non-relatives.