Cross-verification and persuasive cheap talk
研究两位专家向决策者提供建议的廉价交谈博弈,发现决策者交叉验证专家建议的能力可作为专家的承诺机制,使专家在均衡中达到与承诺如实披露信息相同的收益。
We study a cheap-talk game where two experts offer advice to a decision-maker whose actions affect the welfare of all. The experts cannot commit to reporting strategies. Yet, we show that the decision-maker's ability to cross-verify the experts' advice acts as a commitment device for the experts. We prove the existence of an equilibrium, where an expert's equilibrium payoff is equal to what he would obtain if he could commit to truthfully revealing his information.