The Power of Referential Advice
研究了专家在提供建议时附带其他选项信息（参考性建议）的作用，发现恰当构造的参考性建议能阻止决策者选择其他选项，从而增强建议的说服力，并使专家获益。
Expert advice often extends beyond a simple recommendation, including information about alternative options. To explore the role of this referential advice, we enrich the expert’s informational advantage in a canonical model of communication with hard information. We show that when constructed just right, referential advice dissuades the decision maker from choosing options other than the recommendation, thereby making the recommendation itself more persuasive. We identify an equilibrium in which, with probability 1, the expert is strictly better off providing referential advice than she is in any equilibrium in which she provides a recommendation alone.