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Competition and Innovation: An inverted-U relationship using Japanese industry data

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  • YAGI Michiyuki
  • MANAGI Shunsuke

Abstract

This study replicates a model of Aghion et al. ("Competition and Innovation: An inverted-u relationship," Quarterly Journal of Economics 2005; 120(2):701-728), which suggests that an inverted-U relationship exists between competition and innovation. We apply patent data and a competition measure based on Japanese firm-level and industry-average data from 1964 to 2006. In a constant slope model using a full dataset, we find the same inverted-U relationship as did Aghion-Bloom-Blundell-Griffith-Howitt (ABBGH). In decade and industry fixed-effects slope models, we find the inverted-U relationship to be fragile.

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Paper provided by Research Institute of Economy, Trade and Industry (RIETI) in its series Discussion papers with number 13062.

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Length: 46 pages
Date of creation: Jul 2013
Date of revision:
Handle: RePEc:eti:dpaper:13062

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  1. Hall, Bronwyn H & Jaffe, Adam B & Trajtenberg, Manuel, 2001. "The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools," CEPR Discussion Papers 3094, C.E.P.R. Discussion Papers.
  2. Poldahl, Andreas & Gustavsson Tingvall, Patrik, 2005. "Is There Really an Inverted U-shaped Relation Between Competition and R&D?," Working Paper Series 204, Trade Union Institute for Economic Research.
  3. Lind , Jo Thori & Mehlum , Halvor, 2007. "With or Without U? The appropriate test for a U shaped relationship," Memorandum 21/2007, Oslo University, Department of Economics.
  4. Juan A. Correa, 2012. "Innovation and competition: An unstable relationship," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 27(1), pages 160-166, 01.
  5. Kamien, Morton I & Schwartz, Nancy L, 1975. "Market Structure and Innovation: A Survey," Journal of Economic Literature, American Economic Association, vol. 13(1), pages 1-37, March.
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