We investigate the importance of trend inflation and the real-activity gap for explaining observed inflation variation in G7 countries since 1960. Our results are based on a bivariate unobserved-components model of inflation and unemployment in which inflation is decomposed into a stochastic...

We measure the relative contribution of the deviation of real activity from its equilibrium (the gap), quot;supply shockquot; variables, and long-horizon inflation expectations for explaining the U.S. inflation rate in the post-war period. For alternative specifications for the inflation driving...