@article{Hahn2022-06-13Imple-58991,
  year={2022},
  doi={10.1017/S1365100522000499},
  title={Implementing the commitment solution via discretionary policy-making},
  issn={1365-1005},
  journal={Macroeconomic Dynamics},
  author={Hahn, Volker}
}

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    <dcterms:abstract xml:lang="eng">This paper demonstrates that, in a large class of linear-quadratic models with rational expectations, losses due to time-inconsistency problems can be avoided, as the commitment solution can be implemented by a policy-maker who acts under discretion. We focus on two approaches. First, we show that a non-Markovian, reputational equilibrium that implements the commitment solution always exists. Second, we show how delegation to a policy-maker with an additional objective for the policy instrument can be used to implement the commitment solution via a standard discretionary Markov equilibrium. Implementation is facilitated by the fact that the commitment outcome can be attained irrespective of the weight that the policy-maker assigns to the additional target. Using the standard new Keynesian model as an example, we study the dynamics of the economy under optimal additional output targets as well as optimal interest-rate targets for central banks.</dcterms:abstract>
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