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Learning Through Noticing: Theory and Experimental Evidence in Farming

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  • Rema Hanna
  • Sendhil Mullainathan
  • Joshua Schwartzstein

Abstract

Existing learning models attribute failures to learn to a lack of data. We model a different barrier. Given the large number of dimensions one could focus on when using a technology, people may fail to learn because they failed to notice important features of the data they possess. We conduct a field experiment with seaweed farmers to test a model of “learning through noticing”. We find evidence of a failure to notice: On some dimensions, farmers do not even know the value of their own input. Interestingly, trials show that these dimensions are the ones that farmers fail to optimize. Furthermore, consistent with the model, we find that simply having access to the experimental data does not induce learning. Instead, farmers change behavior only when presented with summaries that highlight the overlooked dimensions. We also draw out the implications of learning through noticing for technology adoption, agricultural extension, and the meaning of human capital.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 18401.

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Date of creation: Sep 2012
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Handle: RePEc:nbr:nberwo:18401

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  12. Evenson, Robert E., 2001. "Economic impacts of agricultural research and extension," Handbook of Agricultural Economics, in: B. L. Gardner & G. C. Rausser (ed.), Handbook of Agricultural Economics, edition 1, volume 1, chapter 11, pages 573-628 Elsevier.
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Cited by:
  1. Tanguy Bernard & Stefan Dercon & Kate Orkin & Alemayehu Seyoum Taffesse, 2014. "The Future in Mind: Aspirations and Forward-Looking Behaviour in Rural Ethiopia," CSAE Working Paper Series 2014-16, Centre for the Study of African Economies, University of Oxford.
  2. Fafchamps, Marcel & McKenzie, David & Quinn, Simon & Woodruff, Christopher, 2014. "Microenterprise growth and the flypaper effect: Evidence from a randomized experiment in Ghana," Journal of Development Economics, Elsevier, vol. 106(C), pages 211-226.
  3. C. Kirabo Jackson & Henry S. Schneider, 2013. "Reducing Moral Hazard in Employment Relationships: Experimental Evidence on Managerial Control and Performance Pay," NBER Working Papers 19645, National Bureau of Economic Research, Inc.
  4. Esther Duflo & Pascaline Dupas & Juliette Seban & Elise Huillery, 2012. "Impacts of School-Based HIV Education on Reported Behavior and Knowledge of Adolescent Girls, Evidence from Cameroon," Sciences Po publications info:hdl:2441/7o52iohb7k6, Sciences Po.
  5. Beaman, Lori & Magruder, Jeremy & Robinson, Jonathan, 2014. "Minding small change among small firms in Kenya," Journal of Development Economics, Elsevier, vol. 108(C), pages 69-86.

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