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  • Guido Ascari (a1), Giorgio Fagiolo (a2) and Andrea Roventini (a3)

Recent empirical findings suggest that macroeconomic variables are seldom normally distributed. For example, the distributions of aggregate output growth-rate time series of many OECD countries are well approximated by symmetric exponential-power (EP) densities with Laplace fat tails. In this work, we assess whether real business cycle (RBC) and standard medium-scale New Keynesian (NK) models are able to replicate this statistical regularity. We simulate both models, drawing Gaussian- vs Laplace-distributed shocks, and we explore the statistical properties of simulated time series. Our results cast doubts on whether RBC and NK models are able to provide a satisfactory representation of the transmission mechanisms linking exogenous shocks to macroeconomic dynamics.

Corresponding author
Address correspondence to: Giorgio Fagiolo, Sant'Anna School of Advanced Studies, Pisa, Italy; e-mail:
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Agrò, G. (1995) Maximum likelihood estimation for the exponential power function parameters. Communications in Statistics 24, 523536.
Ascari, G., Flamini, A., and Rossi, L. (2012) Nominal Rigidities, Supply Shocks and Economic Stability. DEM working paper 24, Department of Economics and Management, University of Pavia.
Barro, R.J. (2006) Rare disasters and asset markets in the twentieth century. Quarterly Journal of Economics 1213, 823866.
Bottazzi, G. and Secchi, A. (2003) Common properties and sectoral specificities in the dynamics of U.S. manufacturing firms. Review of Industrial Organization 23, 217232.
Canning, D., Amaral, L.A.N., Lee, Y., Meyer, M., and Stanley, H.E. (1998) Scaling the volatility of GDP growth rates. Economic Letters 60, 335341.
Castaldi, C. and Dosi, G. (2009) The patterns of output growth of firms and countries: Scale invariances and scale specificities. Empirical Economics 373, 475495.
Castaldi, C. and Sapio, S. (2008) Growing like mushrooms? Sectoral evidence from four large European economies. Journal of Evolutionary Economics 18, 509527.
Christiano, L.J. (2007) Comment on “On the Fit of New Keynesian Models” by Del Negro, Schorfheide, Smets and Wouters. Journal of Business and Economic Statistics 252, 143151.
Christiano, L.J., Eichenbaum, M., and Evans, C.L. (2005) Nominal rigidities and the dynamic effects of a shock to monetary policy. Journal of Political Economy 113, 145.
Cogley, T. and Nason, J.M. (1995) Output dynamics in real-business-cycle models. American Economic Review 85, 492511.
De Grauwe, Paul (2012) Booms and busts in economic activity: A behavioral explanation. Journal of Economic Behavior & Organization 83 (3), 484501.
Embrechts, P., Küppelberg, C., and Mikosch, T. (1997) Modelling Extremal Events for Insurance and Finance. Berlin: Springer.
Fagiolo, G., Napoletano, M., Piazza, M., and Roventini, A. (2009) Detrending and the distributional properties of U.S. output time series. Economics Bulletin 29, 31553161.
Fagiolo, G., Napoletano, M., and Roventini, A. (2008) Are output growth-rate distributions fat-tailed? Some evidence from OECD countries. Journal of Applied Econometrics 23, 639669.
Fernandez-Villaverde, P. Guerròn-Quintana, and Rubio-Ramìrez, J. (2012) Estimating Dynamic Equilibrium Models with Stochastic Volatility. NBER Working Paper 18399, National Bureau of Economic Research.
Fernández-Villaverde, J. and Rubio-Ramìrez, J. F. (2007) Estimating macroeconomic models: A likelihood approach. Review of Economic Studies 744, 10591087.
Fu, D., Pammolli, F., Buldyrev, S., Riccaboni, M., Matia, K., Yamasaki, K., and Stanley, H. (2005) The growth of business firms: Theoretical framework and empirical evidence. Proceedings of the National Academy of Science 102, 18,8011806.
Gertler, M. and Kiyotaki, N. (2010) Financial intermediation and credit policy in business cycle analysis. In Friedman, B.M. and Woodford, M. (eds.), Handbook of Monetary Economics, pp. 547599. Amsterdam: North Holland Elsevier.
Greenwald, B. and Stiglitz, J. (1993) Financial market imperfections and business cycles. Quarterly Journal of Economics 108, 77114.
Justiniano, A. and Primiceri, G. (2008) The time-varying volatility of macroeconomic fluctuations. American Economic Review 983, 604641.
Lee, Y., Amaral, L.A.N., Canning, D., Meyer, M., and Stanley, H.E. (1998) Universal features in the growth dynamics of complex organizations. Physical Review Letters 81, 32753278.
Mishkin, F.S. (2011) Monetary Policy Strategy: Lessons from the Crisis. NBER working paper 16755, National Bureau of Economic Research.
Posch, O. (2009) Structural estimation of jump-diffusion processes in macroeconomics. Journal of Econometrics 153, 196210.
Rietz, T.A. (1988) The equity risk premium: A solution. Journal of Monetary Economics 22, 10021037.
Rotemberg, J. and Woodford, M. (1996) Real-business-cycle models and forecastable movements in output, hours, and consumption. American Economic Review 86, 7189.
Schmitt-Grohé, S. and Uribe, M. (2006) Optimal fiscal and monetary policy in a medium-scale macroeconomic model. In Gertler, M. and Rogoff, K. (eds.), NBER Macroeconomics Annual, pp. 383425. Cambridge, MA: MIT Press.
Smets, F. and Wouters, R. (2003) An estimated dynamic stochastic general equilibrium model of the euro area. Journal of the European Economic Association 1, 11231175.
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Macroeconomic Dynamics
  • ISSN: 1365-1005
  • EISSN: 1469-8056
  • URL: /core/journals/macroeconomic-dynamics
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