We analyse how sharing rules affect Nash equilibria in Bertrand games, where the sharing of profits at ties is a decisive assumption. Necessary conditions for either positive or zero equilibrium profits are derived. Zero profit equilibria are shown to exist under weak conditions if the sharing...

This paper analyses a situation where market designers create new trading platforms and traders learn to select among them. We ask whether 'Walrasian' platforms, leading to market-clearing trading outcomes, will dominate the market in the long run. If several market designers are competing, we...

Why do people vote? This question received a lot of attention for more than thirty years, and yet remains unanswered. In this Paper, we take stock of existing empirical regularities and argue that we can use them to improve the model of instrumental voting. Once this is done, we show that purely...

International agreements to protect the global environment are typically difficult to reach. In principle they should be profitable for all players involved in the negotiation. Even when they are profitable, however, they are often unstable due to the incentive to free-ride (enjoying the clean...

This Paper delivers a precise recommendation for how presidential candidates should allocate their resources to maximize the probability of gaining a majority in the Electoral College. A two-candidate, probabilistic-voting model reveals that more resources should be devoted to states which are...

We experimentally examine the effects of flexible and fixed prices in markets for experience goods in which demand is driven by trust. With flexible prices, we observe low prices and high quality in competitive (oligopolistic) markets, and high prices coupled with low quality in non-competitive...

People with a self-control problem often seek relief through social interactions rather than binding commitments. Thus, in self-help groups like Alcoholics Anonymous, Narcotics Anonymous etc, members are said to achieve better personal outcomes by mainly sharing their experiences. In other...

We analyse risk-sharing and endogenous fiscal spending in a two-region model with sequentially complete markets. Fiscal policy is determined by majority voting. When policy setting is decentralized, regions choose pro-cyclical fiscal spending in an attempt to manipulate security prices to their...

The effect of a contribution cap is analyzed in a political lobbying game where the politician has a preference for the policy position of one of the lobbyists. In contrast to the previous literature where the politician has no preference over policy alternatives, we find that a more restrictive...

This paper analyzes the evolution of conventions in a society with local interaction and mobile players. Three innovative aspects are introduced: Imperfect observability of play outside a player's home location, friction in the strategy adjustment process, and restriced mobility. It is shown...