American Economic Review200696(3), 669-693open access
We study how financial incentives can be used to overcome a history of coordination failure using controlled laboratory experiments. Subjects' payoffs depend on coordinating at high effort levels. In an initial phase, the benefits of coordination are low, and play typically converges to an inefficient outcome. We then explore varying financial incentives to coordinate at a higher effort level. An increase in the benefits of coordination leads to improved coordination, but large increases have no more impact than small increases. Once subjects have coordinated on a higher effort level, reductions in the incentives to coordinate have little effect on behavior.
We compare individuals with two-person teams in signaling game experiments. Teams consistently play more strategically than individuals and generate positive synergies in more difficult games, beating a demanding “truth-wins” norm. The superior performance of teams is most striking following changes in payoffs that change the equilibrium outcome. Individuals play less strategically following the change in payoffs than inexperienced subjects playing the same game. In contrast, the teams exhibit positive learning transfer, playing more strategically following the change than inexperienced subjects. Dialogues between teammates are used to identify factors promoting strategic play.
This paper synthesizes findings from an ongoing research program on learning in signaling games. The present paper focuses on cross-game learning- the ability of subjects to take what has been learned in one game and generalize it to related games- an issue that has been ignored in most of the learning literature. We begin by laying out the basic experimental design and recapitulating early results characterizing the learning process. We then report results from an initial experiment in which we find a surprising degree of positive cross-game learning, contrary to the predictions of commonly employed learning models and to the findings of cognitive psychologists. We next explore two features of the environment that help to explain when and why this positive transfer occurs. First, we examine the effects of abstract versus meaningful context, an issue that has been largely ignored by economists out of the belief that behavior is largely dictated by the deep mathematical structure of a game. In contrast, results from cognitive psychology suggest that behavior may well be sensitive to context employed. Our results show that the use of meaningful context serves as a catalyst for positive transfer. Second, we explore how play by two-person teams differs from play by individuals. The psychology literature is quite pessimistic about the ability of teams to beat a “truth wins ” standard based on performance of individuals. But teams easily surpass this norm in our cross-game experiment. We use the dialogues between team members to gain insight into how this transfer occurs, gaining direct confirmation for hypotheses generated by econometric analysis of earlier data. I. The Experimental Environment: Our experiments are based on a simplified version of Paul Milgrom and John Roberts ' (1982) entry limit pricing game. The game proceeds as follows: (1) Monopolists (Ms) observe their cost level- high (MH) or low (ML) cost- realized according to equal probabilities that are common knowledge. (2) Ms choose a quantity (output) whose payoff is contingent on the entrant’s (Es) response (see Table 1). (3) E sees this output, but not M’s type, and either enters or stays out. The asymmetric information, in conjunction with the fact that it is profitable to enter against MHs, but not against MLs, provides an incentive for strategic play (limit pricing).
We examine strategic interactions between firms and planners in China, comparing behavior between: (i) students and managers with field experience with this situation, (ii) standard versus increased monetary incentives, and (iii) sessions conducted “in context,” making explicit reference to interactions between planners and managers, and those without any such references. The dynamics of play are similar across treatments with play only gradually, and incompletely, converging on a pooling equilibrium. A fivefold increase in incentives significantly increases initial levels of strategic play. Games played in context generated greater levels of strategic play for managers, with minimal impact on students.