This paper asks whether population growth is conducive to the sustainability of cooperation. A simple model is developed in which farmers who live around a circular lake engage in trade with their adjacent neighbors. The payoffs from this activity are governed by a prisoner's dilemma rule of...

A migration network is modeled as a mutually beneficial cooperative agreement between financially-constrained individuals who seek to finance and expedite their migration. The cooperation agreement creates a network: established migrants contract to support the subsequent migration of others in...

Consider a population of farmers who live around a lake. Each farmer engages in trade with his m adjacent neighbors, where m is termed the span of interaction. Trade is governed by a prisoner's dilemma rule of engagement. A farmer's payoff is the sum of the payoffs from the m prisoner's dilemma...

This paper identifies the migration policies that emerge when both the sending country and the receiving country wield power to set migration quotas, when controlling migration is costly, and when the decision how much human capital to acquire depends, among other things, on the migration...

This paper develops a model of voluntary migration into degrading work. The essence of the model is a tension between two bads that which arises from being relatively deprived at home, and that which arises from engaging in humiliating work away from home. Balancing between these two bads can...

With the exception of Ireland most OECD countries can be described by a similar demographic development which forces the welfare state to reform their social security systems and especially their pension systems. The populations of all the member states are shrinking and getting older. This...

In this paper, several seasonal unit root tests are analysed in the context of structural breaks at known time and a new break corrected test is suggested. We show that the widely used HEGY test as well as an LM variant thereof are asymptotically robust to seasonal mean shifts of finite...

The monetary transmission mechanism plays an important role in studying the effects of monetary policy on the real side of the economy. At least since Chari et al. (2000) it is generally accepted that new keynesian models of the business cycle display a persistence problem. In this paper, we...