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Mobile Phone Coverage and Producer Markets: Evidence from West Africa

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  • Aker, Jenny
  • Fafchamps, Marcel

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 C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 9491.

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Date of creation: May 2013
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Handle: RePEc:cpr:ceprdp:9491

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

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  1. Fafchamps, Marcel & Gabre-Madhin, Eleni Z. & Minten, Bart, 2003. "Increasing returns and market efficiency in agricultural trade," MTID discussion papers 60, International Food Policy Research Institute (IFPRI).
  2. 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, vol. 122(563), pages 957-989, 09.
  3. Imbens, Guido W. & Wooldridge, Jeffrey M., 2008. "Recent Developments in the Econometrics of Program Evaluation," IZA Discussion Papers 3640, Institute for the Study of Labor (IZA).
  4. A. Colin Cameron & Jonah B. Gelbach & Douglas L. Miller, 2006. "Robust Inference with Multi-way Clustering," NBER Technical Working Papers 0327, National Bureau of Economic Research, Inc.
  5. David H. Autor, 2001. "Wiring the Labor Market," Journal of Economic Perspectives, American Economic Association, vol. 15(1), pages 25-40, Winter.
  6. 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 4516, The World Bank.
  7. Lars-Hendrik Röller & Leonard Waverman, 1996. "Telecommunications Infrastructure and Economic Development: A Simultaneous Approach," CIG Working Papers FS IV 96-16, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
  8. Keisuke Hirano & Guido W. Imbens & Geert Ridder, 2000. "Efficient Estimation of Average Treatment Effects Using the Estimated Propensity Score," NBER Technical Working Papers 0251, National Bureau of Economic Research, Inc.
  9. Guido W. Imbens, 2003. "Nonparametric Estimation of Average Treatment Effects under Exogeneity: A Review," NBER Technical Working Papers 0294, National Bureau of Economic Research, Inc.
  10. 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.
  11. Heckman, James J, 1979. "Sample Selection Bias as a Specification Error," Econometrica, Econometric Society, vol. 47(1), pages 153-61, January.
  12. E. Woodrow Eckard, 2004. "The "Law of One Price" in 1901," Economic Inquiry, Western Economic Association International, vol. 42(1), pages 101-110, January.
  13. 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, vol. 58(2), pages 277-97, April.
  14. Muto, Megumi & Yamano, Takashi, 2009. "The Impact of Mobile Phone Coverage Expansion on Market Participation: Panel Data Evidence from Uganda," World Development, Elsevier, vol. 37(12), pages 1887-1896, December.
  15. Conley, T. G., 1999. "GMM estimation with cross sectional dependence," Journal of Econometrics, Elsevier, vol. 92(1), pages 1-45, September.
  16. Aker, Jenny & Tack, Jesse B., 2011. "Information and Firms’ Search Behavior," 2011 Annual Meeting, July 24-26, 2011, Pittsburgh, Pennsylvania 103404, Agricultural and Applied Economics Association.
  17. Jenny Aker & Christopher Ksoll, 2012. "Information Technology and Farm Households in Niger," Working Papers 2012-005, United Nations Development Programme, Regional Bureau for Africa (UNDP/RBA).
  18. A. Smith, Jeffrey & E. Todd, Petra, 2005. "Does matching overcome LaLonde's critique of nonexperimental estimators?," Journal of Econometrics, Elsevier, vol. 125(1-2), pages 305-353.
  19. Goyal, Aparajita, 2010. "Information, direct access to farmers, andrural market performance in central India," Policy Research Working Paper Series 5315, The World Bank.
  20. Taryn Dinkelman, 2011. "The Effects of Rural Electrification on Employment: New Evidence from South Africa," American Economic Review, American Economic Association, vol. 101(7), pages 3078-3108, December.
  21. Robert T. Jensen, 2010. "Information, efficiency, and welfare in agricultural markets," Agricultural Economics, International Association of Agricultural Economists, vol. 41(s1), pages 203-216, November.
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