between the expert, who is the better informed agent, and the non-expert, who is either a decision-maker or an evaluator of … the expert’s performance. According to the Bayesian decision-theoretic approach the expert is the agent who announces his …

This paper studies optimal decision rules for a decision maker who can consult two experts in an environment without … environments with one expert. In order to derive optimal decision rules, we prove a "constant-threat" result that states that any …. A particular property of an optimal decision rule is that it is simple and constant for a large set of experts …

of the expert, the decision-maker takes action at every period according to his posterior beliefs. At the end of each … round of play, the true current state is verifiable. The distinctive assumption of the paper is that the decision … experiment of unknown statistical bias. The paper shows that the expert will have instrumental reputational concerns, related to …