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The Great Diversification and its Undoing

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  • Vasco M. Carvalho
  • Xavier Gabaix

Abstract

We investigate the hypothesis that macroeconomic fluctuations are primitively the results of many microeconomic shocks, and show that it has significant explanatory power for the evolution of macroeconomic volatility. We define “fundamental” volatility as the volatility that would arise from an economy made entirely of idiosyncratic microeconomic shocks, occurring primitively at the level of sectors or firms. In its empirical construction, motivated by a simple model, the sales share of different sectors vary over time (in a way we directly measure), while the volatility of those sectors remains constant. We find that fundamental volatility accounts for the swings in macroeconomic volatility in the US and the other major world economies in the past half century. It accounts for the “great moderation” and its undoing. Controlling for our measure of fundamental volatility, there is no break in output volatility. The initial great moderation is due to a decreasing share of manufacturing between 1975 and 1985. The recent rise of macroeconomic volatility is due to the increase of the size of the financial sector. We provide a model to think quantitatively about the large comovement generated by idiosyncratic shocks. As the origin of aggregate shocks can be traced to identifiable microeconomic shocks, we may better understand the origins of aggregate fluctuations.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 16424.

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Date of creation: Sep 2010
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Publication status: published as Vasco Carvalho & Xavier Gabaix, 2013. "The Great Diversification and Its Undoing," American Economic Review, American Economic Association, vol. 103(5), pages 1697-1727, August.
Handle: RePEc:nbr:nberwo:16424

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  1. Dupor, Bill, 1999. "Aggregation and irrelevance in multi-sector models," Journal of Monetary Economics, Elsevier, Elsevier, vol. 43(2), pages 391-409, April.
  2. Luca Gambetti & Jordi Gal�, 2009. "On the Sources of the Great Moderation," American Economic Journal: Macroeconomics, American Economic Association, American Economic Association, vol. 1(1), pages 26-57, January.
  3. Nir Jaimovich & Henry E. Siu, 2008. "The Young, the Old, and the Restless: Demographics and Business Cycle Volatility," NBER Working Papers 14063, National Bureau of Economic Research, Inc.
  4. Zhongjun Qu & Pierre Perron, 2005. "Estimating and testing structural changes in multivariate regressions," Boston University - Department of Economics - Working Papers Series, Boston University - Department of Economics WP2005-012, Boston University - Department of Economics.
  5. Alejandro Justiniano & Giorgio E. Primiceri, 2006. "The Time Varying Volatility of Macroeconomic Fluctuations," NBER Working Papers 12022, National Bureau of Economic Research, Inc.
  6. Vadym Volosovych & Bent E. Sørensen & Sebnem Kalemli-Ozcan, 2010. "Deep Financial Integration and Volatility," 2010 Meeting Papers, Society for Economic Dynamics 232, Society for Economic Dynamics.
  7. Gabriel Perez-Quiros & Margaret M. McConnell, 2000. "Output Fluctuations in the United States: What Has Changed since the Early 1980's?," American Economic Review, American Economic Association, American Economic Association, vol. 90(5), pages 1464-1476, December.
  8. Xavier Gabaix, 1999. "Zipf'S Law For Cities: An Explanation," The Quarterly Journal of Economics, MIT Press, MIT Press, vol. 114(3), pages 739-767, August.
  9. Miles S. Kimball & John G. Fernald & Susanto Basu, 2006. "Are Technology Improvements Contractionary?," American Economic Review, American Economic Association, American Economic Association, vol. 96(5), pages 1418-1448, December.
  10. Long, John B, Jr & Plosser, Charles I, 1983. "Real Business Cycles," Journal of Political Economy, University of Chicago Press, University of Chicago Press, vol. 91(1), pages 39-69, February.
  11. Francisco J. Buera & Joseph P. Kaboski, 2009. "The Rise of the Service Economy," NBER Working Papers 14822, National Bureau of Economic Research, Inc.
  12. Olivier Blanchard & John Simon, 2001. "The Long and Large Decline in U.S. Output Volatility," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 32(1), pages 135-174.
  13. Marcel P. Timmer & Mary O’Mahony & Bart van Ark, 2007. "EU KLEMS Growth and Productivity Accounts: An Overview," International Productivity Monitor, Centre for the Study of Living Standards, Centre for the Study of Living Standards, vol. 14, pages 71-85, Spring.
  14. Jean Imbs & Romain Wacziarg, 2003. "Stages of Diversification," American Economic Review, American Economic Association, American Economic Association, vol. 93(1), pages 63-86, March.
  15. Xavier Gabaix, 2005. "The Granular Origins of Aggregate Fluctuations," 2005 Meeting Papers, Society for Economic Dynamics 470, Society for Economic Dynamics.
  16. Marianne Sensier & Dick van Dijk, 2004. "Testing for Volatility Changes in U.S. Macroeconomic Time Series," The Review of Economics and Statistics, MIT Press, vol. 86(3), pages 833-839, August.
  17. Jorgenson, D.W. & Timmer, Marcel, 2010. "Structural Change in Advanced Nations: A New Set of Stylised Facts," GGDC Research Memorandum, Groningen Growth and Development Centre, University of Groningen GD-115, Groningen Growth and Development Centre, University of Groningen.
  18. Andrei A. Levchenko & Julian di Giovanni, 2009. "International Trade and Aggregate Fluctuations in Granular Economies," 2009 Meeting Papers, Society for Economic Dynamics 491, Society for Economic Dynamics.
  19. Alessio Moro, 2012. "The Structural Transformation Between Manufacturing and Services and the Decline in the US GDP Volatility," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 15(3), pages 402-415, July.
  20. Andres Arias & Gary D. Hansen & Lee E. Ohanian, 2006. "Why Have Business Cycle Fluctuations Become Less Volatile?," NBER Working Papers 12079, National Bureau of Economic Research, Inc.
  21. Andrew T. Foerster & Pierre-Daniel G. Sarte & Mark W. Watson, 2011. "Sectoral versus Aggregate Shocks: A Structural Factor Analysis of Industrial Production," Journal of Political Economy, University of Chicago Press, University of Chicago Press, vol. 119(1), pages 1 - 38.
  22. Nirei, Makoto, 2006. "Threshold behavior and aggregate fluctuation," Journal of Economic Theory, Elsevier, Elsevier, vol. 127(1), pages 309-322, March.
  23. Erzo G. J. Luttmer, 2007. "Selection, Growth, and the Size Distribution of Firms," The Quarterly Journal of Economics, MIT Press, MIT Press, vol. 122(3), pages 1103-1144, 08.
  24. Daron Acemoglu & Asuman Ozdaglar & Alireza Tahbaz-Salehi, 2010. "Cascades in Networks and Aggregate Volatility," NBER Working Papers 16516, National Bureau of Economic Research, Inc.
  25. Vasco M Carvalho, 2008. "Aggregate Fluctuations and the Network Structure of Intersectoral Trade," 2008 Meeting Papers 1062, Society for Economic Dynamics.
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  1. “The Great Diversification and Its Unraveling,” V. Carvalho and X. Gabaix (2013)
    by afinetheorem in A Fine Theorem on 2013-08-09 22:25:07
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