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

Calvo pricing implies output gains, while Rotemberg pricing implies output losses after a disinflation. Introducing real wage rigidities has opposite effects: it generates a long-lasting boom in output in Calvo, and a moderate output slump in Rotemberg.