How to Advance Theory with Structural Vars: Use the Sims-Cogley-Nason Approach

24 Pages Posted: 17 Oct 2006 Last revised: 13 Feb 2007

See all articles by Patrick J. Kehoe

Patrick J. Kehoe

Federal Reserve Bank of Minneapolis - Research Department; University of Minnesota - Twin Cities - Department of Economics; National Bureau of Economic Research (NBER)

Date Written: October 2006

Abstract

The common approach to evaluating a model in the structural VAR literature is to compare the impulse responses from structural VARs run on the data to the theoretical impulse responses from the model. The Sims-Cogley-Nason approach instead compares the structural VARs run on the data to identical structural VARs run on data from the model of the same length as the actual data. Chari, Kehoe, and McGrattan (2006) argue that the inappropriate comparison made by the common approach is the root of the problems in the SVAR literature. In practice, the problems can be solved simply. Switching from the common approach to the Sims-Cogley-Nason approach basically involves changing a few lines of computer code and a few lines of text. This switch will vastly increase the value of the structural VAR literature for economic theory.

Suggested Citation

Kehoe, Patrick J., How to Advance Theory with Structural Vars: Use the Sims-Cogley-Nason Approach (October 2006). NBER Working Paper No. w12575. Available at SSRN: https://ssrn.com/abstract=935568

Patrick J. Kehoe (Contact Author)

Federal Reserve Bank of Minneapolis - Research Department ( email )

90 Hennepin Avenue
Minneapolis, MN 55480
United States
612-204-5525 (Phone)
612-204-5515 (Fax)

University of Minnesota - Twin Cities - Department of Economics ( email )

271 19th Avenue South
Minneapolis, MN 55455
United States

National Bureau of Economic Research (NBER) ( email )

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United States

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