In a Europe with integrated goods and factor markets, the various national social security systems are being put under increasing pressure. The creation of the common market has changed individuals' property rights. Martin Kolmar investigates these changes in relation to the objectives of...

We analyze equilibria of two-player contests where players have intention-based preferences. We find that players invest more effort compared to the case with selfish preferences and are even willing to exert effort when the monetary value of the prize converges to zero. As a consequence,...

We ask if awarding multiple prizes in a contest can be used to provide efficient incentives for the production of a public good with heterogeneous producers. With two types of individuals, efficiency can only be guaranteed if the following conditions are met: (i) the contest designer can use at...

This article summarizes the major findings from the economic and socio-biological theories of group conflicts and contrasts them with findings from sociology and social psychology, especially the relationship between group size and group success. The predictive power of some of the results of...

In an environment with asymmetric information and intragenerational externalities, the implementation of a first-best efficient Clarke-Groves- Vickrey mechanism may not be feasible if it has to be self-financing. By using intergenerational transfers, the arising budget deficit can be covered in...

The paper analyzes the strategic effects of decentralized user-fee and enforcement policies for the financing of interregional spillover goods. We derive the equilibrium pricing and enforcement rules for a n-region economy. We show that under mild conditions on the pattern of substitution...

This paper starts from the observation that in public-goods group contests, group impact can in general not be additively decomposed into some sum (of functions) of individual efforts. We use a CES-impact function to identify the main channels of influence of the elasticity of substitution on...

We analyze a Tullock-type takeover contest between two CEOs. To deter wasteful influence activities in shareholder optimum, the parachute compensates the (potentially) foregone earnings of the contestant whose incentives to invest in such activities are strongest. Therefore, the parachute is...