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The local effects of an innovation: Evidence from the French fish market

Listed author(s):
  • Gobillon, Laurent
  • Wolff, François-Charles

In this paper, we investigate the effect on quality, quantity and prices of an innovative fishing gear introduced for a subsample of vessels on a single wholesale fish market in France. Estimations are conducted using transaction data over the 2009-2011 period during which the innovation was introduced. Using a difference-in-differences approach around the discontinuity, we find that for the treated the innovation has a large effect on quality (29.2 percentage points) and prices (23.2 percentage points). A shift in caught fish species is observed and new targeted species are fished very intensively. We also quantify the treatment effect on the treated market from aggregate market data using factor models and a synthetic control approach. We find a sizable effect of the innovation on market quality which is consistent with non-treated vessels adapting their fishing practices to remain competitive. The innovation has no effect on market quantities and prices.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 11757.

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Date of creation: Jan 2017
Handle: RePEc:cpr:ceprdp:11757
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  1. Laurent Gobillon & Thierry Magnac, 2016. "Regional Policy Evaluation: Interactive Fixed Effects and Synthetic Controls," The Review of Economics and Statistics, MIT Press, vol. 98(3), pages 535-551, July.
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  11. François-Charles Wolff & Dale Squires & Patrice Guillotreau, 2013. "The Firm's Management in Production: Management, Firm, and Time Effects in an Indian Ocean Tuna Fishery," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 95(3), pages 547-567.
  12. Laurent Gobillon & François-Charles Wolff, 2016. "Evaluating the Law of one Price Using Micro Panel Data: The Case of the French Fish Market," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 98(1), pages 134-153.
  13. Besley, Timothy & Case, Anne, 1993. "Modeling Technology Adoption in Developing Countries," American Economic Review, American Economic Association, vol. 83(2), pages 396-402, May.
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  16. Margarita Genius & Phoebe Koundouri & Céline Nauges & Vangelis Tzouvelekas, 2014. "Information Transmission in Irrigation Technology Adoption and Diffusion: Social Learning, Extension Services, and Spatial Effects," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 96(1), pages 328-344.
  17. Robert Jensen, 2007. "The Digital Provide: Information (Technology), Market Performance, and Welfare in the South Indian Fisheries Sector," The Quarterly Journal of Economics, Oxford University Press, vol. 122(3), pages 879-924.
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  19. Abadie, Alberto & Diamond, Alexis & Hainmueller, Jens, 2010. "Synthetic Control Methods for Comparative Case Studies: Estimating the Effect of California’s Tobacco Control Program," Journal of the American Statistical Association, American Statistical Association, vol. 105(490), pages 493-505.
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