"We estimate the output gap that is consistent with a standard New Keynesian dynamic stochastic general equilibrium (DSGE) model, where the output gap is defined as a deviation of output from its flexible-price equilibrium, using Bayesian methods. Our output gap illustrates the U.S. business cycles well, compared with other estimates. We find that the main source of the output gap movements is the demand shocks, but that the productivity shocks contributed to the stable output gap in the late 1990s. The robustness analysis shows that the estimated output gap is sensitive to the specification for monetary policy rules." ("JEL" E30, E32, C11) Copyright (c) 2009 Western Economic Association International.

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