Authors: Timothy Cogley, Christian Matthes, and Argia M. Sbordone
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Staff Reports
Optimal Disinflation under Learning
November
2011
Number 524
Revised: May 2014
Revised: May 2014
JEL classification: E31, E52
Highly volatile transition dynamics can emerge when a central bank disinflates while operating without full transparency. In our model, a central bank commits to a Taylor rule whose form is known but whose coefficients are not. Private agents learn about policy parameters via Bayesian updating. Under McCallum’s (1999) timing protocol, temporarily explosive dynamics can arise, making the transition highly volatile. Locally unstable dynamics emerge when there is substantial disagreement between actual and perceived feedback parameters. The central bank can achieve low average inflation, but its ability to adjust reaction coefficients is more limited.
For a published version of this report, see Timothy Cogley, Christian Matthes, and Argia M. Sbordone, "Optimal Disinflation under Learning," Review of Economic Studies 82, no. 2 (April 2015): 791-824.
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