Why Speed Doesnâ€™t Kill: Learning to Believe in Disinflation
Central bankers generally prefer to reduce inflation gradually. We show that a central bank may try to convince the private sector of its commitment to price stability by choosing to reduce inflation quickly. We call this "teaching by doing". We find that allowing for teaching by doing effects always speeds up the disinflation and leads to lower inflation persistence. So, we clarify why "speed" in the disinflation process does not necessarily "kill" in the sense of creating large output losses. This result also holds in an environment where private agents learn about the central bankâ€™s inflation target using a constant gain algorithm.
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