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The aggregate Le Chatelier Samuelson principle with Cournot competition


  • Koebel, Bertrand M.
  • Laisney, François


This paper studies the aggregate substitution and expansion effects triggered by changes in input prices, in a context where firms supply a homogenous commodity and compete in quantities à la Cournot. We derive a sufficient condition for the existence of a Cournot equilibrium and show that this condition also ensures that the Le Chatelier-Samuelson principle is likely to be satisfied in the aggregate at the Cournot equilibrium, although it may not be satisfied at the firm level. These results are confirmed by the empirical findings obtained for two-digit US manufacturing industries, which also highlight the importance of imperfect competition for understanding aggregate growth, investment and employment.

Suggested Citation

  • Koebel, Bertrand M. & Laisney, François, 2010. "The aggregate Le Chatelier Samuelson principle with Cournot competition," ZEW Discussion Papers 10-009, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
  • Handle: RePEc:zbw:zewdip:10009

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    1. Jörn-Steffen Pischke & Till von Wachter, 2008. "Zero Returns to Compulsory Schooling in Germany: Evidence and Interpretation," The Review of Economics and Statistics, MIT Press, vol. 90(3), pages 592-598, August.
    2. Lee, Jong-Wha & Barro, Robert J, 2001. "Schooling Quality in a Cross-Section of Countries," Economica, London School of Economics and Political Science, vol. 68(272), pages 465-488, November.
    3. Thomas Fuchs & Ludger Wößmann, 2007. "What accounts for international differences in student performance? A re-examination using PISA data," Empirical Economics, Springer, vol. 32(2), pages 433-464, May.
    4. Julien Grenet, 2013. "Is Extending Compulsory Schooling Alone Enough to Raise Earnings? Evidence from French and British Compulsory Schooling Laws," Scandinavian Journal of Economics, Wiley Blackwell, vol. 115(1), pages 176-210, January.
    5. Oosterbeek, Hessel & Webbink, Dinand, 2007. "Wage effects of an extra year of basic vocational education," Economics of Education Review, Elsevier, vol. 26(4), pages 408-419, August.
    6. Petra E. Todd & Kenneth I. Wolpin, 2007. "The Production of Cognitive Achievement in Children: Home, School, and Racial Test Score Gaps," Journal of Human Capital, University of Chicago Press, vol. 1(1), pages 91-136.
    7. Eric A. Hanushek & Ludger Woessmann, 2008. "The Role of Cognitive Skills in Economic Development," Journal of Economic Literature, American Economic Association, vol. 46(3), pages 607-668, September.
    8. Jörn-Steffen Pischke, 2007. "The Impact of Length of the School Year on Student Performance and Earnings: Evidence From the German Short School Years," Economic Journal, Royal Economic Society, vol. 117(523), pages 1216-1242, October.
    9. Andrea M. Mühlenweg & Patrick A. Puhani, 2010. "The Evolution of the School-Entry Age Effect in a School Tracking System," Journal of Human Resources, University of Wisconsin Press, vol. 45(2).
    10. Aksoy, Tevfik & Link, Charles R., 2000. "A panel analysis of student mathematics achievement in the US in the 1990s: does increasing the amount of time in learning activities affect math achievement?," Economics of Education Review, Elsevier, vol. 19(3), pages 261-277, June.
    11. Marcotte, Dave E., 2007. "Schooling and test scores: A mother-natural experiment," Economics of Education Review, Elsevier, vol. 26(5), pages 629-640, October.
    12. Ozkan Eren & Daniel J. Henderson, 2008. "The impact of homework on student achievement," Econometrics Journal, Royal Economic Society, vol. 11(2), pages 326-348, July.
    13. Eric A. Hanushek, 2005. "The Economics of School Quality," German Economic Review, Verein für Socialpolitik, vol. 6(3), pages 269-286, August.
    14. Vegard Skirbekk, 2006. "Does School Duration Affect Student Performance? Findings from Canton-Based Variation in Swiss Educational Length," Swiss Journal of Economics and Statistics (SJES), Swiss Society of Economics and Statistics (SSES), vol. 142(I), pages 115-145, March.
    15. Harry Krashinsky, 2014. "How Would One Extra Year of High School Affect Academic Performance in University? Evidence from an Educational Policy Change," Canadian Journal of Economics, Canadian Economics Association, vol. 47(1), pages 70-97, February.
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    Cited by:

    1. Bertrand Koebel & François Laisney, 2016. "Aggregation with Cournot Competition: An Empirical Investigation," Annals of Economics and Statistics, GENES, issue 121-122, pages 91-119.
    2. Xi Chen, 2011. "Increasing Returns to Scale in U.S. manufacturing industries: evidence from direct and reverse regression," Working Papers of BETA 2011-11, Bureau d'Economie Théorique et Appliquée, UDS, Strasbourg.
    3. Bertrand Koebel & François Laisney, 2014. "Aggregation with Cournot Competition: the Le Chatelier Samuelson Principle," Annals of Economics and Statistics, GENES, issue 115-116, pages 343-360.
    4. Peter Arendorf Bache & Anders Laugesen, 2013. "An Industry-Equilibrium Analysis of the LeChatelier Principle," Economics Working Papers 2013-16, Department of Economics and Business Economics, Aarhus University.

    More about this item


    Aggregation; returns to scale; market power; markup; own-price elasticity;

    JEL classification:

    • C33 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Models with Panel Data; Spatio-temporal Models
    • D24 - Microeconomics - - Production and Organizations - - - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity

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