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Mobile Phone Coverage and Producer Markets: Evidence from West Africa

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  • Jenny C. Aker
  • Marcel Fafchamps

Abstract

Expansion in mobile phone coverage has improved access to information throughout the developing world, particularly within sub-Saharan Africa. The existing evidence suggests that information technology has improved market efficiency and reduced consumer prices for certain commodities. There are fewer studies assessing the impact of the technology on producers. Using market-level data we estimate the impact of mobile phone coverage on producer prices in Niger. We find that mobile phone coverage reduced the spatial dispersion of producer prices by 6 percent for a semi-perishable commodity, cowpea. These effects are strongest for remote markets and lowest at harvest time. Mobile telephony, however, has no effect on price dispersion for millet and sorghum, two storable crops. There is also no impact on the average producer price, but mobile phone coverage is associated with a reduction in the intra-annual price risk, primarily for cowpeas. These findings are confirmed by data from a farmer-level survey: we find that farmers owning mobile phones obtain more price information but do not engage more in spatial arbitrage and hence do not receive higher prices – except for peanuts. The additional evidence presented here helps understand how mobile phone coverage affects agricultural market efficiency in developing countries. It suggests that the impact differs across agents – depending on whether they use the information for arbitrage or not – and across crops – depending on whether inter-temporal arbitrage is possible or not.

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Paper provided by Centre for the Study of African Economies, University of Oxford in its series CSAE Working Paper Series with number 2013-09.

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Date of creation: 2013
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Handle: RePEc:csa:wpaper:2013-09

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Keywords: Africa; Information; Information Technology; Market Performance; Search Costs; Niger;

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  1. Marianne Bertrand & Esther Duflo & Sendhil Mullainathan, 2002. "How Much Should We Trust Differences-in-Differences Estimates?," NBER Working Papers 8841, National Bureau of Economic Research, Inc.
  2. Cameron, A. Colin & Gelbach, Jonah B. & Miller, Douglas L., 2011. "Robust Inference With Multiway Clustering," Journal of Business & Economic Statistics, American Statistical Association, American Statistical Association, vol. 29(2), pages 238-249.
  3. Jeffrey Smith & Petra Todd, 2003. "Does Matching Overcome Lalonde's Critique of Nonexperimental Estimators?," University of Western Ontario, CIBC Centre for Human Capital and Productivity Working Papers, University of Western Ontario, CIBC Centre for Human Capital and Productivity 20035, University of Western Ontario, CIBC Centre for Human Capital and Productivity.
  4. Wooldridge, Jeffrey M. & Imbens, Guido, 2009. "Recent Developments in the Econometrics of Program Evaluation," Scholarly Articles 3043416, Harvard University Department of Economics.
  5. Robert T. Jensen, 2010. "Information, efficiency, and welfare in agricultural markets," Agricultural Economics, International Association of Agricultural Economists, International Association of Agricultural Economists, vol. 41(s1), pages 203-216, November.
  6. Aparajita Goyal, 2010. "Information, Direct Access to Farmers, and Rural Market Performance in Central India," American Economic Journal: Applied Economics, American Economic Association, American Economic Association, vol. 2(3), pages 22-45, July.
  7. Arellano, Manuel & Bond, Stephen, 1991. "Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations," Review of Economic Studies, Wiley Blackwell, Wiley Blackwell, vol. 58(2), pages 277-97, April.
  8. Guido W. Imbens, 2004. "Nonparametric Estimation of Average Treatment Effects Under Exogeneity: A Review," The Review of Economics and Statistics, MIT Press, MIT Press, vol. 86(1), pages 4-29, February.
  9. Muto, Megumi & Yamano, Takashi, 2009. "The Impact of Mobile Phone Coverage Expansion on Market Participation: Panel Data Evidence from Uganda," World Development, Elsevier, Elsevier, vol. 37(12), pages 1887-1896, December.
  10. Aker, Jenny & Tack, Jesse B., 2011. "Information and Firms’ Search Behavior," 2011 Annual Meeting, July 24-26, 2011, Pittsburgh, Pennsylvania, Agricultural and Applied Economics Association 103404, Agricultural and Applied Economics Association.
  11. Parsley, David C. & Wei, Shang-Jin, 2001. "Explaining the border effect: the role of exchange rate variability, shipping costs, and geography," Journal of International Economics, Elsevier, Elsevier, vol. 55(1), pages 87-105, October.
  12. Marcel Fafchamps & Eleni Gabre-Madhin & Bart Minten, 2002. "Increasing Returns and Market Efficiency in Agricultural Trade," CSAE Working Paper Series, Centre for the Study of African Economies, University of Oxford 2002-18, Centre for the Study of African Economies, University of Oxford.
  13. Reinganum, Jennifer F, 1979. "A Simple Model of Equilibrium Price Dispersion," Journal of Political Economy, University of Chicago Press, University of Chicago Press, vol. 87(4), pages 851-58, August.
  14. Buys, Piet & Dasgupta, Susmita & Thomas, Tim & Wheeler, David, 2008. "Determinants of a digital divide in Sub-Saharan Africa : a spatial econometric analysis of cell phone coverage," Policy Research Working Paper Series, The World Bank 4516, The World Bank.
  15. Röller, Lars-Hendrik & Waverman, Leonard, 2000. "Telecommunications Infrastructure And Economic Development: A Simultaneous Approach," CEPR Discussion Papers, C.E.P.R. Discussion Papers 2399, C.E.P.R. Discussion Papers.
  16. Heckman, James J, 1979. "Sample Selection Bias as a Specification Error," Econometrica, Econometric Society, Econometric Society, vol. 47(1), pages 153-61, January.
  17. Williams,Jeffrey C. & Wright,Brian D., 1991. "Storage and Commodity Markets," Cambridge Books, Cambridge University Press, Cambridge University Press, number 9780521326162.
  18. Keisuke Hirano & Guido W. Imbens & Geert Ridder, 2000. "Efficient Estimation of Average Treatment Effects Using the Estimated Propensity Score," NBER Technical Working Papers, National Bureau of Economic Research, Inc 0251, National Bureau of Economic Research, Inc.
  19. Robert Jensen, 2007. "The Digital Provide: Information (Technology), Market Performance, and Welfare in the South Indian Fisheries Sector," The Quarterly Journal of Economics, MIT Press, MIT Press, vol. 122(3), pages 879-924, 08.
  20. David H. Autor, 2001. "Wiring the Labor Market," Journal of Economic Perspectives, American Economic Association, American Economic Association, vol. 15(1), pages 25-40, Winter.
  21. Janet Ceglowski, 2003. "The law of one price: intranational evidence for Canada," Canadian Journal of Economics, Canadian Economics Association, Canadian Economics Association, vol. 36(2), pages 373-400, May.
  22. Jenny C. Aker & Isaac M. Mbiti, 2010. "Mobile Phones and Economic Development in Africa," Journal of Economic Perspectives, American Economic Association, American Economic Association, vol. 24(3), pages 207-32, Summer.
  23. Conley, T. G., 1999. "GMM estimation with cross sectional dependence," Journal of Econometrics, Elsevier, Elsevier, vol. 92(1), pages 1-45, September.
  24. Jenny C. Aker & Christopher Ksoll & Travis J. Lybbert, 2012. "Can Mobile Phones Improve Learning? Evidence from a Field Experiment in Niger," American Economic Journal: Applied Economics, American Economic Association, American Economic Association, vol. 4(4), pages 94-120, October.
  25. Michael Anderson & Jeremy Magruder, 2012. "Learning from the Crowd: Regression Discontinuity Estimates of the Effects of an Online Review Database," Economic Journal, Royal Economic Society, Royal Economic Society, vol. 122(563), pages 957-989, 09.
  26. Brown, Jeffrey, 2000. "Does the Internet Make Markets More Competitive? Evidence from the Life Insurance Industry," Working Paper Series, Harvard University, John F. Kennedy School of Government rwp00-007, Harvard University, John F. Kennedy School of Government.
  27. Jenny Aker & Christopher Ksoll, 2012. "Information Technology and Farm Households in Niger," Working Papers, United Nations Development Programme, Regional Bureau for Africa (UNDP/RBA) 2012-005, United Nations Development Programme, Regional Bureau for Africa (UNDP/RBA).
  28. E. Woodrow Eckard, 2004. "The "Law of One Price" in 1901," Economic Inquiry, Western Economic Association International, Western Economic Association International, vol. 42(1), pages 101-110, January.
  29. Taryn Dinkelman, 2011. "The Effects of Rural Electrification on Employment: New Evidence from South Africa," American Economic Review, American Economic Association, American Economic Association, vol. 101(7), pages 3078-3108, December.
  30. Stahl, Dale O, II, 1989. "Oligopolistic Pricing with Sequential Consumer Search," American Economic Review, American Economic Association, American Economic Association, vol. 79(4), pages 700-712, September.
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