Structural vector autoregression (SVAR) models are commonly used to investigate the effect of structural shocks on economic variables. The identifying restrictions imposed in many of these exercises have been criticized in the literature. This paper extends this literature by showing that, if the SVAR includes one or more variables that are efficient in the strong form of the efficient market hypothesis, the identifying restrictions frequently imposed in SVARs cannot be satisfied. The authors argue that this analysis will likely apply to VARs that include variables that are consistent with weaker forms of the efficient market hypothesis, especially when the data are measured at the monthly or quarterly frequencies, as is frequently the case.
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Article provided by Federal Reserve Bank of St. Louis in its journal Review.
References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
Olivier J. Blanchard & Mark W. Watson, 1986.
"Are Business Cycles All Alike?,"
NBER Chapters,
in: The American Business Cycle: Continuity and Change, pages 123-180
National Bureau of Economic Research, Inc.
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Matthew Shapiro & Mark Watson, 1988.
"Sources of Business Cycles Fluctuations,"
NBER Chapters,
in: NBER Macroeconomics Annual 1988, Volume 3, pages 111-156
National Bureau of Economic Research, Inc.
[Downloadable!]
Cited by: (explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)