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SIGMA: a new open economy model for policy analysis

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Author Info
Christopher J. Erceg
Luca Guerrieri
Christopher Gust

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Abstract

In this paper, we describe a new multi-country open economy SDGE model named "SIGMA" that we have developed as a quantitative tool for policy analysis. We compare SIGMA's implications to those of an estimated large-scale econometric policy model (the FRB/Global model) for an array of shocks that are often examined in open-economy policy simulations. We show that SIGMA's implications for the near-term (2-3 year) responses of key variables are generally similar to those of FRB/Global. Two features of our modeling framework, including rational expectations with learning, and the inclusion of some non-Ricardian agents, play an important role in giving SIGMA more flexibility to generate responses akin to the econometric policy model; nevertheless, some quantitative disparities between the two models remain due to certain restrictive aspects of SIGMA's optimization-based framework. We conclude by using long-term simulations to illustrate some areas of comparative advantage of our SDGE modeling framework. These include linking model responses to underlying structural features of the economy, and fully articulating the endogenous channels through which "imbalances" arising from various shocks are alleviated.

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Paper provided by Board of Governors of the Federal Reserve System (U.S.) in its series International Finance Discussion Papers with number 835.

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Date of creation: 2005
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Keywords: Macroeconomics - Econometric models Business cycles - Econometric models

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  14. Mario Marazzi & Nathan Sheets & Robert J. Vigfusson & Jon Faust & Joseph Gagnon & Jaime Marquez & Robert F. Martin & Trevor Reeve & John Rogers, 2005. "Exchange rate pass-through to U.S. import prices: some new evidence," International Finance Discussion Papers 833, Board of Governors of the Federal Reserve System (U.S.). [Downloadable!]
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  17. Günter Coenen & Athanasios Orphanides & Volker Wieland, 2004. "Price Stability and Monetary Policy Effectiveness when Nominal Interest Rates are Bounded at Zero," Advances in Macroeconomics, Berkeley Electronic Press, vol. 4(1), pages 1187-1187. [Downloadable!] (restricted)
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  18. Erceg, Christopher J. & Henderson, Dale W. & Levin, Andrew T., 2000. "Optimal monetary policy with staggered wage and price contracts," Journal of Monetary Economics, Elsevier, vol. 46(2), pages 281-313, October. [Downloadable!] (restricted)
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  19. Kimball, Miles S, 1995. "The Quantitative Analytics of the Basic Neomonetarist Model," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 27(4), pages 1241-77, November. [Downloadable!] (restricted)
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  22. Christopher Gust & Nathan Sheets, 2007. "The adjustment of global external imbalances: does partial exchange rate pass-through to trade prices matter?," International Finance Discussion Papers 850, Board of Governors of the Federal Reserve System (U.S.). [Downloadable!]
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  28. Christopher J. Erceg & Luca Guerrieri & Christopher Gust, 2005. "Expansionary fiscal shocks and the trade deficit," International Finance Discussion Papers 825, Board of Governors of the Federal Reserve System (U.S.). [Downloadable!]
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