Price Stickiness Asymmetry, Persistence and Volatility in a New Keynesian Model

In a two-sector New-Keynesian model, this paper shows that the dispersion in the degree of sectoral price stickiness plays a key role in the determination of the dynamics of aggregate inflation and, consequently, of the whole economy. The dispersion in price stickiness reduces the persistence of inflation and, to a smaller extent, of the interest rate. It also reduces the volatility of inflation, the interest rate and the output-gap. Thus two economies with the same average degree of price stickiness but a different variance may behave very differently, highlighting the relevance of sectoral data for economic estimations and forecasts.