Selective Incentives in an Apex Game

The effect of a selective incentive system on the likelihood of collective action is tested using an experiment with an Apex Game, a power-imbalanced game in which the weak players choose between competing against each other to form an alliance with the strong player or cooperating with each other in a unanimous alliance of weak players (excluding the strong player). A theoretical introduction analyzes the nature and importance of selective incentives for collective action and demonstrates the relevance of Apex Game experiments for studies of collective action. Results confirm the predictions: Formation of the coalition of weak players rises from 20% in the control condition to 62% when a negative selective incentive system is added.