We compare communication about private information to communication about actions in a one-shot 2-person public good game with private information.The informed player, who knows the exact return from contributing and whose contribution is unobserved, can send a message about the return or her...

Results are reported of a laboratory experiment aimed at examining whether strategic substitutability and strategic complementarity have an impact on the tendency to cooperate in two-player dominance-solvable games with a Pareto-inefficient Nash equilibrium. We find that there is significantly...