This discussion paper resulted in a publication in <I>De Economist</I> (2001). Volume 149, p. 33-51.<P> In this paper the behavior of producers in a social environment is considered from a more sociological point of view than is usually done in economics. The producers play Bertrand price competition...</p></i>

In this paper it is argued that the slowness of the legislativesystem implies pre-commitment of legislation for at least the periodit takes to change a law. A simple model illustrates the benefit ofthis pre-commitment.

We extend the standard evolutionary model of Kandori, Mailath, andRob (1993) to incorporate time-varying aggregate and idiosyncraticshocks separately in coordination games.We show that both types of shocks have a different effect on theinvariant distribution over the different equilibria of dthe...

In this paper we argue that authorities aid cooperation by means ofdirect coordination or the enforcement of re-commitment devices suchas contract laws.Credible threats of violence allow this role. In alocal interaction model, an authority forms if mutually connected individuals with sufficient...

We apply the stochastic evolutionary approach of equilibrium selection tomacroeconomic models in which a complementarity at the macro level ispresent. These models often exhibit multiple Pareto-ranked Nash equilibria,and the best response-correspondence of an individual increases with ameasure...

We apply the dynamic stochastic framework proposed by recent evolutionaryliterature to the class of strict supermodular games when two simplebehavior rules coexist in the population, imitation and myopic optimization.We assume that myopic optimizers are able to see how well their payoff...

We present an equilibrium-search model with heterogenous workers whosearch for a job in one of two sectors and who lose part of theirskills during unemployment. We show that an import tariff increasethe wage and the employment prospects in the protected sector. Thisresults in a labor market...

We introduce heterogeneous expectations in a standard housing market model linking housing rental levels to fundamental buying prices. Using quarterly data we estimate the model parameters for eight different countries, US, UK, NL, JP, CH, ES, SE and BE. We find that the data support...