NBER Working Paper No. 18682
We augment a standard monetary DSGE model to include a Bernanke-Gertler-Gilchrist financial accelerator mechanism. We fit the model to US data, allowing the volatility of cross-sectional idiosyncratic uncertainty to fluctuate over time. We refer to this measure of volatility as 'risk'. We find that fluctuations in risk are the most important shock driving the business cycle.
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A data appendix is available at http://www.nber.org/data-appendix/w18682
Document Object Identifier (DOI): 10.3386/w18682
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