The paper considers the evolution of portfolio rules in markets with stationary returns and endogenous prices. The ultimate success of a portfolio rule is measured by the wealth share the rule is eventually able to conquer in competition with other portfolio rules. We give nec-essary and...

I study the effect of fatigue and innate ability on performance in a model with incomplete contracts, lumpy tasks requiring multiple periods of work and stochastic productivity shocks. I find that increasing ability or reducing fatigue does not lead necessarily to more productive efficiency,...

In recent years, many social scientists have claimed that trust plays an important role in economic and social transactions. Despite its proposed importance, the measurement and the definition of trust seem to be not fully settled, and the identification of the exact role of trust in economic...

This paper examines the role of other-regarding and time preferences for cooperation in the field. We study the preferences of fishermen whose main, and often only, source of income stems from using a common pool resource (CPR). The exploitation of a CPR involves a negative interpersonal and...

It is shown that rent-seeking contests with continuous and independent type distributions possess a unique pure-strategy Nash equilibrium.

Das Geschehen auf den Finanzmärkten hängt vom individuellen Verhalten ab, wird aber auch wesentlich bestimmt durch die Ausgestaltung des Finanzsystems, das heisst durch die Rollen, die den einzelnen Akteure zugewiesen werden, und durch die Regeln für die Interaktion der verschiedenen Rollen....

In Part I the author was concerned with modeling the monthly logarithmic CHF/USD exchange rate, ''s''. He rejected a model proposed by B.T. McCallum. Searching for a more appropriate framework a story by P. De Grauwe was introduced, bringing complex cognitive processes and social practices into...

The analysis of monthly exchange rates is carried out using a model of McCallum, which is based on the concept of Rational Expectations. Applying the model to the CHF/USD exchange rate starting a misspecification analysis, the RE component appears to be a weak point of the model. The theory of...

I present a game-theoretic model where economic competition and attention competition are interdependent. On the one hand the effort to attract consumer attention depends on the value of attention to the firm which depends on the grade of price competition among all perceived firms. On the other...

A strategy profile of a game is called robustly stochastically stable if it is stochastically stable for a given behavioral model independently of the specification of revision opportunities and tie-breaking assumptions in the dynamics. We provide a simple radius-coradius result for robust...