provide an evolutionary underpinning for in-group altruism combined with spiteful behavior towards members of the rival out … increase in in-group altruism can be balanced by a decrease in spiteful behavior towards the out-group. …

provide an evolutionary underpinning for in-group altruism combined with spiteful behavior towards members of the rival out … increase in in-group altruism can be balanced by a decrease in spiteful behavior towards the out-group. …

, an increase in the degree of the agent's altruism as well as a more reciprocal behavior by players has ambiguous effects … between players depend on their degrees of altruism and spitefulness. …

effect on utility. The third class of models includes those of reciprocity in which people’s altruism depends on whether … others act kindly or unkindly toward them. In the fourth type of model, inequality has a profound effect on altruism, with … specifications of altruism might have to be modified to take into account how people behave when they are able to transfer lotteries …

more to the referrer. The advantage of the lab setting is that we can isolate moral hazard and directed altruism as the …

The ultimatum game has improved our understanding about the bargaining power associated with a threat, an issue where … working both in bargaining and experimental economics. …

of other-regarding preferences (ORPs). Evidence will come primarily from public goods experiments, but also bargaining …

economic contexts. Recent models of non-pecuniary motives can be classified as either altruism-based, equity-based, or … reciprocity-based. We estimate and compare leading approaches in these categories, using experimental data. We then offer a … nested tests, we find that intentional reciprocity, distributive concerns, and altruistic considerations all play a …