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Erscheinungsjahr: 
2010
Schriftenreihe/Nr.: 
Staff Report No. 434
Verlag: 
Federal Reserve Bank of New York, New York, NY
Zusammenfassung: 
The dynamic stochastic general equilibrium (DSGE) models used to study business cycles typically assume that exogenous disturbances are independent first-order autoregressions. This paper relaxes this tight and arbitrary restriction by allowing for disturbances that have a rich contemporaneous and dynamic correlation structure. Our first contribution is a new Bayesian econometric method that uses conjugate conditionals to allow for feasible and quick estimation of DSGE models with correlated disturbances. Our second contribution is a reexamination of U.S. business cycles. We find that allowing for correlated disturbances resolves some conflicts between estimates from DSGE models and those from vector autoregressions and that a key missing ingredient in the models is countercyclical fiscal policy. According to our estimates, government spending and technology disturbances play a larger role in the business cycle than previously ascribed, while changes in markups are less important.
Schlagwörter: 
DSGE
Bayesian estimation
robustness
JEL: 
E30
E10
Dokumentart: 
Working Paper

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