Rogoff's "Conservative" Central Banker Restored
证明，在工资设定者提前获知供给冲击信息导致随机通胀偏差时，若无法实现完全状态依赖的委托，则委托给权重保守的央行行长是可取的。
We show that delegation of monetary policy to a weight-conservative central banker can be desirable, although the government can also use an inflation contract, an employment target, an inflation target, or any combination of these to control the central banker. The key feature of our model is a stochastic inflation bias, arising when wage setters receive some information about a supply shock prior to signing nominal wage contracts. Weight-conservatism is found to be desirable if fully state-contingent delegation is not possible and the stochastic inflation bias cannot be eliminated by optimal choice of the delegation parameters.