The paper considers a model of federation with two heterogeneous regions that try to attract the capital by competing in capital income taxes and public investment that enhance the productivity of capital. Regions' choices determine allocation of capital across the regions and their revenues...

Collusive agreements and relational contracts are commonly modeled as equilibria of dynamic games with the strategic features of the repeated Prisoner's Dilemma. The pay-offs agents obtain when being ‘cheated upon’ by other agents play no role in these models. We propose a way to take these...

An unfunded Social Security system faces a major risk, sometimes referred to as ‘political risk’. In order to account properly for this risk, the paper considers a political process in which the support to the system is asked from each newborn generation. The analysis is conducted in an...

This paper examines the impact of policy-makers' horizons on the sustainability of international cooperation. We describe a prisoners' dilemma game between two infinitely-lived organizations (countries) run by agents (policy-makers) with a shorter tenure. The agents' mandates are finite but...

This paper is the concluding chapter of Rights, Rents and Fairness: Allocation in the European Emissions Trading Scheme, edited by the co-authors and forthcoming from Cambridge University Press. The main objective of this paper is to distill the lessons and general principles to be learnt from...

We test the hypothesis that "genuine" or "convincing" smiling is a costly signal that has evolved to induce cooperation in situations requiring mutual trust. Potential trustees in a trust game made video clips for viewing by potential trusters before the latter decided whether to send them...

A government agency wants an infrastructure-based public service to be provided. Our experimental study compares two different modes of provision. In a public-private partnership, the two tasks of building the infrastructure and operating it are delegated to one private contractor (a...

This paper investigates how a mandatory activation program in Denmark affects the job finding rate of unemployed workers. The activation program was introduced in an experimental setting where about half of the workers who became unemployed in the period from November 2005 to March 2006 were...

In an experimental setting some Danish unemployed workers were assigned to an activation program while others were not. Unemployed who were assigned to the activation program found a job more quickly. We show that the activation effect increases with the distance between the place of residence...