Standard economic explanations of good conduct in trade rely almostexclusively on future-directed extrinsic motivations induced by materialincentives. But intrinsic motives to behave trustworthy and to punishuntrustworthiness do support trade. In our model, intrinsically motivatedplayers are...

If the (un)trustworthy are rare, people will talk about them, making their detectionmore reliable and / or less costly. When, however, both types appear in large numbers,detecting (un)trustworthiness will be considerably more difficult and possibly too costly.Based on Güth and Kliemt (2000) we...

Applying an evolutionary framework, we investigate how a reputation mechanism and abuyer insurance (as used on Internet market platforms such as eBay) interact to promote trustworthinessand trust. Our analysis suggests that the costs involved in giving reliable feedbackdetermine the gains from...

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...

Traditional game theory usually relies on commonly known decision rationality meaning that choices are made in view of their consequences (the shadow of the future). Evolutionary game theory, however, denies any cognitive deliberation by assuming that choice behavior evolves due to its past...

To commit credibly in bargaining is crucial: In the ultimatum game with its one–sided early commitment power the “proposer” gets (nearly) the whole pie while the“responder” is left with (almost) nothing. When both parties commit simultaneouslythe (a)symmetric Nash(1950)–bargaining...

On an otherwise symmetric oligopoly market with stochastic demands for heterogeneousproducts firms can either hire an employee or partner or buy therequired labor input on the labor market. Whereas the wage of hired labor doesnot depend on the realization of stochastic demand, the price of...

This paper focuses on the uneasy alliance of rational choice and evolutionary explanations in modern economics. While direct evolutionary explanations of "optimality" rule out "purposeful" rational choice by assuming zero-intelligence and pure rational choice explanations leave no room for...

The indirect evolutionary approach integrates forward-looking evaluation of opportunitiesand adaptation in the light of the past. Subjective motivation determines behavior,but long-run evolutionary success of motivational types depends on objective factors only.This can justify intrinsic...