This paper shows that endogenous adjustments in the composition of labour supplies magnify the effects of changes in commodity prices on the measured skill premium under quite plausible conditions. These composition effects arise from decisions of individuals with heterogeneous inherent...

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 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...

Der Aufsatz befaßt sich mit der Frage, wie Theoreme der mathematischen Ökonomie getestet werden können und welche Rolle unrealistische Annahmen bei diesen Tests spielen. Als Beispiel dienen die bekannten Theoreme der neoklassischen Außenhandelstheorie, das Faktorpreisausgleichstheorem und...