Figure 1

Utility functions, representative simulation outcomes, and representative experiment outcomes for the four games. The four columns correspond to the Same game, the Diverse game, the Same and Diverse game, and the Same or Different game. The first row shows the utility functions used in the simulations (and equivalently, the scoring rules in the experiment). The second row shows a typical outcome in the simulation for a group size of 20. The third row shows the outcomes in one of the experimental groups with 20 participants. In the simulation, at every time period, one of the 20 agents is selected randomly and given the opportunity to relocate. The agent evaluates the nearest four available locations in the up, down, left, and right directions, as well as its current location. If the agent identifies a single strictly best available location among these, it moves to (or stays at) it; if it identifies multiple best locations, it randomly chooses to relocate to one of them.