Models with sticky prices predict that monetary policy changes will affect relative prices and relative quantities in the short run because some prices are more flexible than others. In U.S. micro data, the degree of price stickiness differs dramatically across consumption categories. This study...

Inflation equals the product of two terms: the fraction of items with price changes (whose volatility figures prominently in state-dependent pricing models), and the average size of those price changes (the only source of fluctuations in time-dependent pricing models). The variance of inflation...

Inflation equals the product of two terms: an extensive margin (the fraction of items with price changes) and an intensive margin (the average size of those price changes). The variance of inflation over time can be decomposed into contributions from each margin. The extensive margin figures...

In the 1988-2004 microdata collected by the U.S. Bureau of Labor Statistics for the Consumer Price Index, price changes are frequent (every 4-7 months, depending on the treatment of sale prices) and large in absolute value (on the order of 10%). The size and timing of price changes vary...

Inflation equals the product of two terms: an extensive margin (the fraction of items with price changes) and an intensive margin (the average size of those changes). The variance of inflation over time can be decomposed into contributions from each margin. The extensive margin figures...