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Getting to Know the Global Economy Model and Its Philosophy


  • Douglas Laxton


This paper provides a nontechnical introduction to the IMF's Global Economy Model (GEM). GEM is a modern dynamic stochastic general equilibrium (DSGE) model that has been designed for studying a range of issues that cannot be adequately addressed with reduced-form econometric models or an earlier generation of macromodels whose dynamic equations were not based on strong choice-theoretic foundations. Unlike earlier models, which were viewed as black boxes by many outsiders, GEM's theoretical structure is much better connected with work in the academic community, making it considerably easier for outside researchers to apply it and extend it for their own work. To understand the basic philosophy behind GEM, we start by using the issue of exchange rate pass-through to understand how adding additional features to the model allows one to better understand issues related to the magnitude of exchange rate pass-through. We then provide a nontechnical introduction to what needs to be known to develop a steady-state calibration of the model. Finally, we end by summarizing other work on DSGE modeling at the IMF and lay out a few major priorities for the future. IMF Staff Papers (2008) 55, 213–242; doi:10.1057/imfsp.2008.11

Suggested Citation

  • Douglas Laxton, 2008. "Getting to Know the Global Economy Model and Its Philosophy," IMF Staff Papers, Palgrave Macmillan, vol. 55(2), pages 213-242, June.
  • Handle: RePEc:pal:imfstp:v:55:y:2008:i:2:p:213-242

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    References listed on IDEAS

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    1. Adnan Haider Bukhari & Safdar Ullah Khan, 2008. "A Small Open Economy DSGE Model for Pakistan," The Pakistan Development Review, Pakistan Institute of Development Economics, vol. 47(4), pages 963-1008.
    2. Emilia Mioara CAMPEANU, 2012. "How can be investigated the fiscal policy effects on the Romanian economy?," Anale. Seria Stiinte Economice. Timisoara, Faculty of Economics, Tibiscus University in Timisoara, vol. 0, pages 80-87, May.
    3. Sandra Gomes & Pascal Jacquinot & Matthias Mohr & Massimiliano Pisani, 2013. "Structural Reforms and Macroeconomic Performance in the Euro Area Countries: A Model-Based Assessment," International Finance, Wiley Blackwell, vol. 16(1), pages 23-44, February.
    4. Hatcher, Michael C., 2011. "Comparing inflation and price-level targeting: A comprehensive review of the literature," Cardiff Economics Working Papers E2011/22, Cardiff University, Cardiff Business School, Economics Section.
    5. Michael Hatcher & Patrick Minford, 2016. "Stabilisation Policy, Rational Expectations And Price-Level Versus Inflation Targeting: A Survey," Journal of Economic Surveys, Wiley Blackwell, vol. 30(2), pages 327-355, April.
    6. Barbara Annicchiarico & Fabio Di Dio & Francesco Felici & Francesco Nucci, 2014. "Assessing Policy Reforms for Italy Using ITEM and QUEST III," Rivista di Politica Economica, SIPI Spa, issue 3, pages 211-244, July-Sept.
    7. Gomes, S. & Jacquinot, P. & Pisani, M., 2016. "Fiscal devaluation in the euro area: A model-based analysis," Economic Modelling, Elsevier, vol. 52(PA), pages 58-70.
    8. Pietro Cova & Patrizio Pagano & Massimiliano Pisani, 2016. "Global macroeconomic effects of exiting from unconventional monetary policy," Temi di discussione (Economic working papers) 1078, Bank of Italy, Economic Research and International Relations Area.
    9. Tovar, Camilo Ernesto, 2009. "DSGE Models and Central Banks," Economics - The Open-Access, Open-Assessment E-Journal, Kiel Institute for the World Economy (IfW), vol. 3, pages 1-31.
    10. Fabio DI DIO & Barbara ANNICCHIARICO & Francesco FELICI & Francesco NUCCI, "undated". "Macroeconomic Modelling and Policy Implications: an Assessment for Italy using ITEM and QUEST," EcoMod2010 259600045, EcoMod.
    11. Hatcher, Michael & Minford, Patrick, 2014. "Stabilization policy, rational expectations and price-level versus infl‡ation targeting: a survey," CEPR Discussion Papers 9820, C.E.P.R. Discussion Papers.
    12. Masahiro Kawai & Fan Zhai, 2010. "Asia’s Post-Global Financial Crisis Adjustment : A Model-Based Dynamic Scenario Analysis," Finance Working Papers 23055, East Asian Bureau of Economic Research.
    13. Pietro Cova & Patrizio Pagano & Massimiliano Pisani, 2015. "Domestic and international macroeconomic effects of the Eurosystem expanded asset purchase programme," Temi di discussione (Economic working papers) 1036, Bank of Italy, Economic Research and International Relations Area.
    14. Barbara Annicchiarico & Fabio Di Dio & Francesco Felici & Francesco Nucci, "undated". "Macroeconomic Modelling and the Effects of Policy Reforms: an Assessment for Italy using ITEM and," Working Papers 1, Department of the Treasury, Ministry of the Economy and of Finance.
    15. Francesco Sergi, 2015. "L'histoire (faussement) naïve des modèles DSGE," Documents de travail du Centre d'Economie de la Sorbonne 15066, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
    16. Pietro Cova & Patrizio Pagano & Massimiliano Pisani, 2014. "Foreign exchange reserve diversification and the "exorbitant privilege"," Temi di discussione (Economic working papers) 964, Bank of Italy, Economic Research and International Relations Area.

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