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Managing Beliefs about Monetary Policy under Discretion
Authors:ELMAR MERTENS
Abstract:In models of monetary policy, discretionary policymaking is typically constrained in its ability to manage public beliefs. However, when a policymaker possesses private information, policy actions serve as signals to the public about unobserved economic conditions and belief management becomes an integral part of optimal discretion policies. This article derives the optimal time‐consistent policy for a general linear‐quadratic setting. The optimal policy is illustrated in a simple New Keynesian model, where analytical solutions can be derived as well. In this model, imperfect information about the policymaker's output target leads to lower policy losses.
Keywords:E33  E37  E47  E52  E58  optimal monetary policy  discretion  time‐consistent policy  Markov‐perfect equilibrium  incomplete information  Kalman filter
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