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Linking CGE and microsimulation models: a comparison of different approaches

  • Giulia Colombo

    ()

    (Department of Economic and Social Science - Catholic University of Milan and SiNSYS NV/SA)

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    In the literature that studies income inequality and poverty, a recent development has been the development of models that link together a macroeconomic model (usually a Computable General Equilibrium (CGE) model) and a microsimulation model. Linking the two types of model allows the modeller to take into account full agents? heterogeneity, whilst at the same time considering the general equilibrium effects of a proposed policy reform. In this paper, I first review in detail three approaches to building linked CGE-microsimulation models: one in accordance with the fully integrated approach, and two following the layered approach (the so-called Top-Down and Top-Down/Bottom-Up approaches). The principal goal of the paper is to present a considered evaluation of the merits and demerits of these alternative methods currently used to link CGE and microsimulation models. To do so I use all three approaches to model the macro- and micro-economic impacts of a policy shock to an archetypical economy (constructed using fictitious data), and compare the results. This analysis highlights the importance of (i) consistency between the underlying macro- and micro-data; and (ii) the precise mechanisms by which feedback effects are passed between the macro and micro models. I develop this latter point further by detailed analysis of the TD/BU approach outlined by Savard (2003), leading to a proposed refinement in the way that feedback effects from the micro level of analysis are incorporated back into the CGE model.

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    File URL: http://ima.natsem.canberra.edu.au/IJM/V3_1/IJM_20.pdf
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    Article provided by International Microsimulation Association in its journal International Journal of Microsimulation.

    Volume (Year): 3 (2010)
    Issue (Month): 1 ()
    Pages: 72-91

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    Handle: RePEc:ijm:journl:v:3:y:2010:i:1:p:72-91
    Contact details of provider: Web page: http://www.microsimulation.org/ijm/

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    1. John Cockburn, 2004. "Trade Liberalisation and Poverty in Nepal A Computable General Equilibrium Micro Simulation Analysis," Development and Comp Systems 0409012, EconWPA.
    2. Denis Cogneau & Anne-Sophie Robilliard, 2004. "Poverty Alleviation Policies in Madagascar: a Micro-Macro Simulation Model," Working Papers DT/2004/11, DIAL (Développement, Institutions et Mondialisation), revised Nov 2004.
    3. Decaluwe, B. & Patry, A. & Savard, L. & Thorbecke, E., 1999. "Poverty Analysis Within a General Equilibrium Framework," Papers 9909, Laval - Recherche en Politique Economique.
    4. Denis Cogneau, 2001. "Formation du revenu, segmentation et discrimination sur le marché du travail d'une ville en développement : Antananarivo fin de siècle," Working Papers DT/2001/18, DIAL (Développement, Institutions et Mondialisation).
    5. BUSSOLO Maurizio & LAY Jann, . "Globalization and Poverty Changes in Colombia," EcoMod2003 330700029, EcoMod.
    6. John Creedy & Guyonne Kalb & Rosanna Scutella, 2003. "Discrete Hours Labour Supply Modelling: Specification, Estimation and Simulation," Melbourne Institute Working Paper Series wp2003n21, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
    7. Robinson, Sherman & Cattaneo, Andrea & El-Said, Moataz, 1998. "Estimating a social accounting matrix using cross entropy methods:," TMD discussion papers 33, International Food Policy Research Institute (IFPRI).
    8. Anne-Sophie Robilliard & Sherman Robinson, 2003. "Reconciling Household Surveys and National Accounts Data Using a Cross Entropy Estimation Method," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 49(3), pages 395-406, 09.
    9. Francisco Ferreira & Julie Litchfield, 2001. "Education or Inflation? The Micro and Macroeconomics of the Brazilian Income Distribution During 1981-1995," Latin American Journal of Economics-formerly Cuadernos de Economía, Instituto de Economía. Pontificia Universidad Católica de Chile., vol. 38(114), pages 209-238.
    10. Luc Savard, 2003. "Poverty and Income Distribution in a CGE-Household Micro-Simulation Model: Top-Down/Bottom Up Approach," Cahiers de recherche 0343, CIRPEE.
    11. Decaluwé, Bernard & Dumont, Jean-Christophe & Savard, Luc, 2000. "Measuring Poverty and Inequality in a Computable General Equilibrium Model," Cahiers de recherche 9926, Université Laval - Département d'économique.
    12. Caesar B. Cororaton & John Cockburn, 2005. "Trade Reform and Poverty in the Philippines: a Computable General Equilibrium Microsimulation Analysis," Cahiers de recherche 0513, CIRPEE.
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