In phase 1 of our experiment every participant plays the ultimatum game with each of the other five group members, each taking the role of proposer and responder. For each of the offers one learns how many participants would have accepted it. The pie is 30 times larger in phase 2. It thus pays...

It is often claimed that, if one could sense whether the other is going to cooperate or not, cooperators will manage to cooperate. Our experiment tries to shed new light on this debate. Participants could make their strategies in an asymmetric prisoner's dilemma game and a trust game dependent...

About sixty years ago, Hans Albert criticized economists for their "model platonism", a methodological attitude that immunizes theoretical models against empirical criticism. Since then, economics has taken an empirical turn; yet, model platonism lingers on. The root of the problem is...

Players from two populations, predictors and predictees, are randomly matched in a game-theoretic version of Newcomb's Problem. Predictors are able to predict the predictees' choices by observing their type. There are two types of predictees, those who take their predictability into account by...

In plausible theories of bounded rationality actors are not stimulus-response machines but human beings. As such they are guided by theories that predict the course of the world and prescribe how they should try to intervene in that course. Since boundedly rational human beings cannot only...

Many consumption prices are highly volatile. It would certainly overburden our cognitive system to fully adjust to all these changes. Households therefore often rely on simple heuristics when deciding what to consume, e.g. in the form of a constant budget share for a specific consumption...

This paper brings together views on choice making as have been developed in philosophy, psychology, and economics. Starting from specific examples the relative merits of different approaches are discussed. The conclusion that models of boundedly rational behavior are the future of social science...

Nach Einordung der Spieltheorie als Rationalverhalten bei interaktiven sozialen Entscheidungsproblemen in Volks- und Betriebswirtschaftslehre werden kurz die (Spiel-)Formen zur Abbildung sozialer Entscheidungssituationen und die wesentlichen Lösungskonzepte vorgestellt. Konkret verdeutlicht...