We define and study transparency, credibility, and reputation in a model where the central bank's characteristics are unobservable to the private sector and are inferred from the policy outcome. A low-credibility bank optimally conducts a more inflationary policy than a high-credibility bank, in...

This paper presents a theory of the real effects of disinflation. As in New Keynesian models, price adjustment is staggered across firms, As in New Classical models, credibility is imperfect: the monetary authority may not complete a promised disinflation. The combination of imperfect...

This paper studies the merits of policy rules with escape clauses, analyzing as an example fixed exchange-rate systems that allow member countries the freedom to realign in periods of stress. Motivating this example is the debate within the European Monetary System over how quickly to move from...

This paper determines the real effects of credible disinflation when price setting is staggered. The results are surprising: a fairly quick disinflation causes a boom. This finding suggests that nominal price rigidity alone does not explain why disinflation is costly in actual economies