Large productivity gains have been observed in Chinese agriculture following the transition from collective farming to household contracting. Using a model of mutual monitoring in an egalitarian production team, we estimate that labor supervision absorbed about 10-20 percent of total labor time for a sample of Chinese agricultural teams during 1970-76. These agency costs are lower than comparable estimates derived from aggregate data.

We propose a new notion of credibility for Bayesian persuasion problems. A disclosure policy is credible if the sender cannot profit from tampering with her messages while keeping the message distribution unchanged. We show that the credibility of a disclosure policy is equivalent to a cyclical monotonicity condition on the policy’s induced distribution over states and actions. We also characterize how credibility restricts the sender’s ability to persuade under different payoff structures. In particular, when the sender’s payoff is state independent, all disclosure policies are credible. We apply our results to the market for lemons and show that no useful information can be credibly disclosed by the seller.

Large productivity gains have been observed in Chinese agriculture following the transition from collective farming to household contracting. Using a model of mutual monitoring in an egalitarian production team, we estimate that labor supervision absorbed about 10-20 percent of total labor time for a sample of Chinese agricultural teams during 1970-76. These agency costs are lower than comparable estimates derived from aggregate data.