@article{19cd67ee326a41eb8121e8137e1e2ef8,
title = "Siblings, strangers, and the surge of altruism",
abstract = "We demonstrate how altruism can surge in a population of nonaltruists. We assume that each individual plays a one-shot prisoner's dilemma game with his or her sibling, or with a stranger, and that the probability that an individual survives to reproduce is proportional to his or her payoff in this game. We model the formation of couples and the rule of imitation of parents and of nonparents. We then ask what happens to the proportion of altruists in the population. We specify a case where the unique and stable equilibrium is one in which the entire population will consist of altruists.",
keywords = "A13, D64, Evolution of altruism, One-shot prisoner's dilemma game, Siblings and strangers",
author = "Oded Stark",
note = "Funding Information: This paper evolves from joint work with Theodore C. Bergstrom. I am grateful to Ken Binmore for enlightening conversations and to Aanund Hylland for constructive comments. I thank the National Institute on Aging (grant R01-AG13037) for partial financial support.",
year = "1999",
month = nov,
doi = "10.1016/s0165-1765(99)00157-3",
language = "אנגלית",
volume = "65",
pages = "135--142",
journal = "Economics Letters",
issn = "0165-1765",
publisher = "Elsevier B.V.",
number = "2",
}