In line with the widely applied principle of just deserts, we assume that the severity of the penalty on a contract offender increases in the harm on the other. When this principle holds, the influence of the efficiency of the agreement on the incentives to abide by it crucially depends on...

The paper examines the theoretical foundations of the hold-up problem. At a first stage, one agent decides on the level of a relationship-specific investment. There is no contract, so at a second stage the agent must bargain with a trading partner over the surplus that the investment has...

Most literature on the hold-up problem starts from the assumption that ex post bargaining outcomes are insensitive to prior investment costs. We argue that this approach is unsatisfactory. If the bargaining procedure is relatively symmetric, it typically admits multiple perfect equilibria, some...

We consider Bayesian incentive compatible and individually rational mechanisms for resolving conflicts between two agents who are uncertain about each other's fighting potential. We model the default option of outright conflict as a probabilistic contest. Examples of such contests may be...

In the models of Young (1993a, b), boundedly rational individuals are recurrently matched to play a game, and they play myopic best replies to the recent history of play. It could therefore be an advantage to instead play a myiopic best reply to the myopic best reply, something boundedly...

The paper examines the evolutionary foundations of bilateral bargaining behavior, emphasizing the trade-off between commitment and flexibility. When the pie's size is certain, evolution favors the "fair" strategy; accept any share greater than or equal to one half, reject any smaller share. The...

A product set of pure strategies is a prep set ("prep" is short for "preparation") if it contains at least one best reply to any consistent belief that a player may have about the strategic behavior of his opponents. Minimal prep sets are shown to exists in a class of strategic games satisfying...

Game theory is usually difficult to test precisely in the field because predictions typically depend sensitively on features that are not controlled or observed. We conduct one such test using field data from the Swedish lowest unique positive integer (LUPI) game. In the LUPI game, players pick...

We study costless pre-play communication of intentions among inexperienced players. Using the level-k model of strategic thinking to describe players' beliefs, we fully characterize the effects of pre-play communication in symmetric 2×2 games. One-way communication weakly increases coordination...