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http://ssrn.com/abstract=1139364
 
 

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Interpreting the Great Moderation: Changes in the Volatility of Economic Activity at the Macro and Micro Levels


Steven J. Davis


University of Chicago; National Bureau of Economic Research (NBER)

James A. Kahn


Federal Reserve Bank of New York; National Bureau of Economic Research (NBER)

May 2008

NBER Working Paper No. w14048

Abstract:     
We review evidence on the Great Moderation in conjunction with evidence about volatility trends at the micro level. We combine the two types of evidence to develop a tentative story for important components of the aggregate volatility decline and its consequences. The key ingredients are declines in firm-level volatility and aggregate volatility -- most dramatically in the durable goods sector -- but the absence of a decline in household consumption volatility and individual earnings uncertainty. Our explanation for the aggregate volatility decline stresses improved supply-chain management, particularly in the durable goods sector, and, less important, a shift in production and employment from goods to services. We provide evidence that better inventory control made a substantial contribution to declines in firm-level and aggregate volatility. Consistent with this view, if we look past the turbulent 1970s and early 1980s much of the moderation reflects a decline in high frequency (short-term) fluctuations. While these developments represent efficiency gains, they do not imply (nor is there evidence for) a reduction in economic uncertainty faced by individuals and households.

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Date posted: June 2, 2008  

Suggested Citation

Davis, Steven J. and Kahn, James A., Interpreting the Great Moderation: Changes in the Volatility of Economic Activity at the Macro and Micro Levels (May 2008). NBER Working Paper No. w14048. Available at SSRN: http://ssrn.com/abstract=1139364

Contact Information

Steven J. Davis (Contact Author)
University of Chicago ( email )
5807 S. Woodlawn Avenue
Chicago, IL 60637
United States
773-702-7312 (Phone)
773-702-0458 (Fax)
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
James A. Kahn
Federal Reserve Bank of New York ( email )
33 Liberty Street
New York, NY 10045
United States
212-720-1948 (Phone)
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
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