E Pluribus Unum: Macroeconomic Modelling for Multi-agent Economies
From the point of view of the average macroeconomist, agent based modelling has an obvious drawback: It makes impossible to think in aggregate terms. The modeller, in fact, can reconstruct aggregate variables only "from the bottom up" by summing the individual quantities. As a consequence the interpretation of the transmission mechanism of shocks is somehow arbitrary. We propose a modelling strategy which reduces the dimensionality of an agent based framework by replacing the actual distributional features (in our model: the distribution of firms' financial conditions) with the first and second moments of the distribution itself. The main message is that the difficulty of thinking in macroeconomic terms when dealing with multi-agent economies can be circumvented by means of an appropriate aggregation procedure –which we label the Modified-Representative Agent –such that the distribution of agents' characteristics can be approximated by (at least) the (first and second) moments of the distribution. The moments of the distribution play the role of macroeconomic variables. We put this strategy at work in a model of the fi nancial accelerator in which fi rms' heterogeneous degree of fi nancial robustness affect investment in a bankruptcy risk context (à la Greenwald-Stiglitz).
|Date of creation:||Oct 2012|
|Date of revision:|
|Contact details of provider:|| Postal: 250, rue Albert Einstein, 06560 Valbonne|
Web page: http://www.gredeg.cnrs.fr
More information through EDIRC
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.:
- Bernanke, Ben & Gertler, Mark, 1989. "Agency Costs, Net Worth, and Business Fluctuations," American Economic Review, American Economic Association, vol. 79(1), pages 14-31, March.
- Bernanke, Ben S. & Gertler, Mark & Gilchrist, Simon, 1999.
"The financial accelerator in a quantitative business cycle framework,"
Handbook of Macroeconomics,
in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 21, pages 1341-1393
- Bernanke, B. & Gertler, M. & Gilchrist, S., 1998. "The Financial Accelerator in a Quantitative Business Cycle Framework," Working Papers 98-03, C.V. Starr Center for Applied Economics, New York University.
- Ben Bernanke & Mark Gertler & Simon Gilchrist, 1998. "The Financial Accelerator in a Quantitative Business Cycle Framework," NBER Working Papers 6455, National Bureau of Economic Research, Inc.
- Cordoba, Juan Carlos & Ripoll, Marla, 2010.
"Collateral Constraints in a Monetary Economy,"
Staff General Research Papers
32123, Iowa State University, Department of Economics.
- Krusell, P & Smith Jr, A-A, 1995.
"Income and Wealth Heterogeneity in the Macroeconomic,"
RCER Working Papers
399, University of Rochester - Center for Economic Research (RCER).
- Per Krusell & Anthony A. Smith & Jr., 1998. "Income and Wealth Heterogeneity in the Macroeconomy," Journal of Political Economy, University of Chicago Press, vol. 106(5), pages 867-896, October.
- Per Krusell & Anthony A. Smith, Jr., . "Income and Wealth Heterogeneity in the Macroeconomy," GSIA Working Papers 1997-37, Carnegie Mellon University, Tepper School of Business.
- Greenwald, Bruce & Stiglitz, Joseph E & Weiss, Andrew, 1984.
"Informational Imperfections in the Capital Market and Macroeconomic Fluctuations,"
American Economic Review,
American Economic Association, vol. 74(2), pages 194-99, May.
- Bruce C. Greenwald & Joseph E. Stiglitz & Andrew Weiss, 1984. "Informational Imperfections in the Capital Market and Macro-Economic Fluctuations," NBER Working Papers 1335, National Bureau of Economic Research, Inc.
- Mark L. Gertler & R. Glenn Hubbard, 1988.
"Financial Factors in Business Fluctuations,"
NBER Working Papers
2758, National Bureau of Economic Research, Inc.
- Mark Gertler & R. Glenn Hubbard, 1988. "Financial factors in business fluctuations," Proceedings - Economic Policy Symposium - Jackson Hole, Federal Reserve Bank of Kansas City, pages 33-78.
- Stephanie Schmitt-Grohe & Martin Uribe, 2002.
"Solving Dynamic General Equilibrium Models Using a Second-Order Approximation to the Policy Function,"
NBER Technical Working Papers
0282, National Bureau of Economic Research, Inc.
- Schmitt-Grohe, Stephanie & Uribe, Martin, 2004. "Solving dynamic general equilibrium models using a second-order approximation to the policy function," Journal of Economic Dynamics and Control, Elsevier, vol. 28(4), pages 755-775, January.
- Schmitt-Grohé, Stephanie & Uribe, Martín, 2001. "Solving Dynamic General Equilibrium Models Using a Second-Order Approximation to the Policy Function," CEPR Discussion Papers 2963, C.E.P.R. Discussion Papers.
- Stephanie Schmitt-Grohe & Martin Uribe, 2001. "Solving Dynamic General Equilibrium Models Using a Second-Order Approximation to the Policy Function," Departmental Working Papers 200106, Rutgers University, Department of Economics.
- Bruce C. Greenwald & Joseph E. Stiglitz, 1988.
"Financial Market Imperfections and Business Cycles,"
NBER Working Papers
2494, National Bureau of Economic Research, Inc.
- Bruce C. Greenwald & Joseph E. Stiglitz, 1993. "Financial Market Imperfections and Business Cycles," The Quarterly Journal of Economics, Oxford University Press, vol. 108(1), pages 77-114.
- M. Gallegati & A. Palestrini & D. Gatti & E. Scalas, 2006. "Aggregation of Heterogeneous Interacting Agents: The Variant Representative Agent Framework," Journal of Economic Interaction and Coordination, Springer, vol. 1(1), pages 5-19, May.
- White, Michelle J, 1989. "The Corporate Bankruptcy Decision," Journal of Economic Perspectives, American Economic Association, vol. 3(2), pages 129-51, Spring.
- John Moore & Nobuhiro Kiyotaki, .
1995-5, Edinburgh School of Economics, University of Edinburgh.
- Myers, Stewart C. & Majluf, Nicolás S., 1945-, 1984. "Corporate financing and investment decisions when firms have information that investors do not have," Working papers 1523-84., Massachusetts Institute of Technology (MIT), Sloan School of Management.
- Ben Bernanke & Mark Gertler, 1987.
"Financial Fragility and Economic Performance,"
NBER Working Papers
2318, National Bureau of Economic Research, Inc.
- Stewart C. Myers & Nicholas S. Majluf, 1984. "Corporate Financing and Investment Decisions When Firms Have InformationThat Investors Do Not Have," NBER Working Papers 1396, National Bureau of Economic Research, Inc.
When requesting a correction, please mention this item's handle: RePEc:gre:wpaper:2012-08. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Patrice Bougette)
If references are entirely missing, you can add them using this form.