Commodity prices have increased dramatically and persistently over the past several years, followed by a sharp reversal in recent months. These large and persistent movements in commodity prices raise questions about their implications for global inflation. The process of globalization has motivated much debate over whether global factors have become more important in driving the […]
Real rigidities that limit the responsiveness of real marginal cost to output are a key ingredient of sticky price models necessary to account for the dynamics of output and inflation. We argue here, in the spirit of Bils and Kahn (2000), that the behavior of marginal cost over the cycle is directly related to that of inventories, data on which is readily available.