Demand inducement as cheap talk
用廉价谈话博弈分析医患互动，研究不完全代理的原因和后果，发现供应商诱导需求在某些参数下存在，并指出两种检验诱导需求的方法无效。
The doctor-patient interaction is analysed in a game of cheap talk. Causes and consequences of imperfect agency are examined. One form of imperfect agency, supplier-induced demand, is a feature of neologism proof equilibria with some parameter values but not with others. The model is used to evaluate two tests that have been used to test for the existence of supplier-induced demand. The analysis suggests that the two tests, which compare the medical utilization of informed and uninformed consumers, are not valid.