We explore the evolutionary dynamics of a population that consists of cooperators and defectors, wherein each member of the many pairs of players of a one-shot prisoner's dilemma game is drawn at random, and the number of descendents positively depends on the payoffs in the game. We demonstrate...

We endow individuals that differ in skill levels and tastes for working with altruistic preferences for redistribution in a voting model where a unidimensional redistributive parameter is chosen by majority voting in a direct democracy. When altruistic preferences are desert-sensitive, i.e. when...

In a framework of preferences over lotteries, we show that an axiom system consisting of weakened versions of Arrow's axioms has a unique solution. "Relative Utilitarianism" consists of first normalising individual von Neumann-Morgenstern utilities between 0 and 1 and then summing them. This...

This paper identifies the optimal two-period price sequence in the attempt for selling a good, with take-it-or-leave-it offers, when the seller faces ambiguity about the buyers' willingness to pay. If the first round fails, the seller updates its beliefs on the state of the market in accordance...

We analyse the consequences of an increase of information (say as a consequence of the internet), on the equilibrium of a pure exchange economy with n goods and m agents. We assume that such an increase modifies the characteristics of goods la Lancaster and has a positive effect on utility. We...

The plea bargaining procedure, namely the viability of a stage of bargaining between prosecutor and defendant in criminal suits, is analyzed in the framework of a two-sided incomplete information game. It is shown that, for a given parameter configuration, there exists a Bayesian equilibrium...

This paper shows how the role of the market, the state and the family in providing financial support at old age has evolved over time with changes in factors such as the reliability and the effectiveness of family support, the rate of interest, the cost of public funds and earning inequality. We...

In their recent paper Goeree et al. (2005) determine that all-pay auctions are better for fundraising activities than lotteries. We show that the introduction of asymmetry among valuations with complete information could reverse this result. Complete information seems well suited to some charity...

This paper analyses a growth model wherein saving results from bequestas-consumption. It first looks at the market equilibrium and at the optimal solution. Then it turns to the issue of decentralizing the optimal solution with various taxes and transfers. Depending on the available instruments,...

In this paper we study the optimal design of a long term care policy in a setting that includes three types of care to dependent parents: public nursing homes, financial assistance by children and assistance in time by children. The instruments are public nursing homes and subsidies to aiding...