A longstanding criticism of the core is that it is too sensitive to small changes in player numbers, as in a well known example where one extra seller (resp. buyer) causes the entire surplus to go to the buyer's (seller's) side. We test this example in the lab, using several different trading...

In the basic adverse selection model, a seller makes a contract offer to a privately informed buyer. A fundamental hypothesis of incentive theory is that the seller may want to offer a menu of contracts to separate the buyer types. In the good state of nature, total surplus is not different from...

We study how the predictive power of level-k models changes as we perturb the classical beauty contest setting along two dimensions: the strength of the coordination motive and the information symmetry. We use a variation of the Morris and Shin (2002) model as the unified framework for our...

In this paper, we introduce two new learning models: action-sampling learning and impulse-matching learning. These two models, together with the models of self-tuning EWA and reinforcement learning, are applied to 12 different 2×2 games and their results are compared with the results from...

In this paper we use a laboratory setting to manipulate our subjectsʼ beliefs about the cognitive levels of the players they are playing against. We show that in the context of the 2/3 guessing game, individual choices crucially depend on their beliefs about the level of others. Hence, a...

We study the effects of reputation and competition in a trust game. If trustees are anonymous, outcomes are poor: trustees are not trustworthy, and trustors do not trust. If trustees are identifiable and can, hence, build a reputation, efficiency quadruples but is still at only a third of the...

We propose an equilibrium model of duopolistic dynamic pricing in which a buyer alternates between two sellers for price offers over a finite time horizon. The game ends when the buyer accepts a price offer or the selling season is over, whichever comes first. Previous research (Granot et al.,...

We propose the minimum approval mechanism (MAM) for a standard linear public good environment with two players. Players simultaneously and privately choose their contributions to the public good in the first stage. In the second stage, they simultaneously decide whether to approve the otherʼs...

We analyze the behavior of two-person teams and individuals who repeatedly play the game with a unique mixed strategy equilibrium in the laboratory. When teams play OʼNeillʼs 4×4 game against another team, the choice frequencies are consistent with equilibrium of the game at the...