Whether behavior converges toward rational play or fair play in repeated ultimatum games depends on which player yields first. If responders concede first by accepting low offers, proposers would not need to learn to offer more, and play would converge toward unequal sharing. By the same token,...

Previous studies have shown that decision makers are less other-regardingwhen their own payoff is risky than when it is sure. Empirical observationsalso indicate that people care more about identifiable than unidentifiableothers. In this paper, we report on an experiment designed to...

The main results of our indirect evolutionary approach to trust in large interactions suggest that trsutworthiness must be detectable if good conduct in trust-relationships is to survive. According to theoretical reasoning there is a niche then for an organization offering a possibly costly...