We study tacit collusion in repeated auctions in which bidders can only observe pastwinners and not their bids. We adopt a stringent interpretation of tacit collusion ascollusion without communication about strategies that we model as a symmetryrestriction on repeated game strategies: Strategies...

Traditional agency theory assumes that the principal has no more information about the agent's actions than the enforcement authorities have. This is unrealistic in many settings, and in repeated models, additional information possessed by the principal changes the nature of the problem. Such...

This paper considers the ability of developed countries to sustain a cooperative agreement to compensate developing countries for the “incremental costs” of biodiversity conservation. It is shown that, depending on certain parameter values and the model specification, such an agreement could...