Cooperating when you know your outcomes will differ

This article presents a new form of prisoner's dilemma (PD) game called asymmetric dilemmas (ADs). The underlying structure of ADs conforms to the requirements of a PD game, but mutually cooperative choices by the two parties give them known, different outcomes. Similarly, mutually noncooperative choices also give them different outcomes. This article summarizes the results of a series of experiments on ADs and presents the theoretical rationale derived from those findings. The results question the generality of Axelrod's confidence in the general utility of the tit-for-tat strategy and show that asymmetries are best solved via systems of complex alternation. Finally, the games and the theory can be easily adapted for classroom or training exercises on complex strategic planning in negotiations.