Charles Darwin (1874) stated that "women are less selfish but men are more competitive". Very recent papers (Eckel & Grossman, 1998, 2001 or Andreoni & Vesterlund 2001, among others) have shown the relevance of gender in altruism in both ultimatum and dictator games. In this paper we analyse the...

Traditional Phillips curves relating inflation to a measure of the level of activity, and augmented to include past inflation (assumed to proxy expected inflation), have been thought to be highly unstable over time. In this paper we try to investigate, using recent econometric developments,...

Throughout the year 2001 the Argentine real GDP fell by 20 percent and the Investment Rate decreased by more than 20 percent of the GDP. The government made several announcements on changes in exchange rate policy in order to assist the recovery of the economy. At same time, the Trade Balance...

Desde los años 70 se han producido cambios en el mercado de trabajo que han creado el clima apripuado para incitar a las organizaciones y los trabajadores a demandar mayor flexibilidad en el empleo. En este contexto, el empleo temporal ha sido objetivo de numerosas investigaciones y los...

This paper analyzes a two-period licensing model where an upstream patent holder licenses an innovation, by per-unit output royalty contracts, to several downstream licensees. Such firms compete in Cournot fashion at the product market and each firm's cost is directly unobservable for third...

Dominant strategies truthful implementation of flexible social objectives involves the ability of the planner to alter the individual incentives in such a way that the externality imposed on society by each agent reporting a given type is fully internalized in the agent’s final payoff. In...

We analyze the pattern of pool prices in the Spanish electricity market during 1998 by means of a Time Varying Transition Probabilities Markov switching model. Our purpose is two­fold: firstly, to identify and date the drops in prices that cannot be accounted for by supply nor demand...

Over the nineties, several changes on Port legislation where implemented in Spain. The legislation was aimed at providing port authorities with greater autonomy in some areas. In this paper we analyze the impact of the reforms on merchandise trading. We try to ascertain the impact of the reforms...

In this paper we introduce a new concept of solidarity in terms of reciprocity and characterize the set of social choice functions that are reciprocate (in both a strong and a weak sense), anonymous and efficient in a standard public good provision model when the agents have single-peaked...

In this paper we introduce a strategy for testing the unit root hypothesis in a first-order autoregressive process with an unknown intercept where the initial value of the variable is a known constant. In the context of this model the standard Dickey-Fuller test is nonsimilar, the intercept...