Communication in a Common Pool Resource Environment with Probabilistic Destruction

We replicate and extend an experiment due to Walker and Gardner by investigating the effect of communication in a common pool resource subject to probabilistic destruction when group appropriation exceeds a safe zone. We replicate the Gardner and Walker result that destruction of the resource is rapid and efficiencies are low when communication is not allowed. Face-to-face communication significantly increases mean efficiency. Three groups of five sustain a “good” Nash equilibrium in the safe zone. The remaining two groups quickly destroy the resource. Achieving a “good”equilibrium is highly dependent on the emergence of a leader in the group communication.