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You Can Pick Your Friends, but You Need to Watch Them: Loan Screening and Enforcement in a Referrals Field Experiment

  • Bryan, Gharad

    (London School of Economics and Innovations for Poverty Action)

  • Karlan, Dean

    (Yale University and MIT)

  • Zinman, Jonathan

    (Dartmouth College and MIT)

We examine a randomized trial that allows separate identification of peer screening and enforcement of credit contracts. A South African microlender offered half its clients a bonus for referring a friend who repaid a loan. For the remaining clients, the bonus was conditional on loan approval. After approval, the repayment incentive was removed from half the referrers in the first group and added for half those in the second. We find large enforcement effects, a $12 (100 Rand) incentive reduced default by 10 percentage points from a base of 20%. In contrast, we find no evidence of screening.

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Paper provided by Yale University, Department of Economics in its series Working Papers with number 99.

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Date of creation: Jan 2012
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Handle: RePEc:ecl:yaleco:99
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  1. Attanasio, Orazio & Augsburg, Britta & De Haas, Ralph & Fitzsimons, Emla & Harmgart, Heike, 2011. "Group lending or individual lending? Evidence from a randomised field experiment in Mongolia," MPRA Paper 35439, University Library of Munich, Germany.
  2. Oded Galor & Joseph Zeira, 2013. "Income Distribution and Macroeconomics," Working Papers 2013-12, Brown University, Department of Economics.
  3. Xavier Gin� & Pamela Jakiela & Dean Karlan & Jonathan Morduch, 2010. "Microfinance Games," American Economic Journal: Applied Economics, American Economic Association, vol. 2(3), pages 60-95, July.
  4. Ghatak, Maitreesh, 1999. "Group lending, local information and peer selection," Journal of Development Economics, Elsevier, vol. 60(1), pages 27-50, October.
  5. Xavier Gine & Dean Karlan, 2006. "Group versus Individual Liability: A Field Experiment in the Philippines," Working Papers 940, Economic Growth Center, Yale University.
  6. Sylvain Chassang & Gerard Padro I Miquel & Erik Snowberg, 2012. "Selective Trials: A Principal-Agent Approach to Randomized Controlled Experiments," American Economic Review, American Economic Association, vol. 102(4), pages 1279-1309, June.
  7. Lori Beaman & Jeremy Magruder, 2012. "Who Gets the Job Referral? Evidence from a Social Networks Experiment," American Economic Review, American Economic Association, vol. 102(7), pages 3574-93, December.
  8. Stefan Klonner & Ashok Rai, 2008. "Cosigners as Collateral," Center for Development Economics 2008-08, Department of Economics, Williams College.
  9. DeanS. Karlan, 2007. "Social connections and group banking," Economic Journal, Royal Economic Society, vol. 117(517), pages F52-F84, 02.
  10. Dean Karlan & Jonathan Zinman, 2009. "Observing Unobservables: Identifying Information Asymmetries With a Consumer Credit Field Experiment," Econometrica, Econometric Society, vol. 77(6), pages 1993-2008, November.
  11. Nava Ashraf & James Berry & Jesse M. Shapiro, 2007. "Can Higher Prices Stimulate Product Use? Evidence from a Field Experiment in Zambia," NBER Working Papers 13247, National Bureau of Economic Research, Inc.
  12. Bond, Philip & Rai, Ashok S., 2008. "Cosigned vs. group loans," Journal of Development Economics, Elsevier, vol. 85(1-2), pages 58-80, February.
  13. Banerjee, Abhijit V & Besley, Timothy & Guinnane, Timothy W, 1994. "Thy Neighbor's Keeper: The Design of a Credit Cooperative with Theory and a Test," The Quarterly Journal of Economics, MIT Press, vol. 109(2), pages 491-515, May.
  14. Banerjee, Abhijit & Duflo, Esther, 2004. "Do Firms Want to Borrow More? Testing Credit Constraints Using a Directed Lending Program," CEPR Discussion Papers 4681, C.E.P.R. Discussion Papers.
  15. Jessica Cohen & Pascaline Dupas, 2010. "Free Distribution or Cost-Sharing? Evidence from a Randomized Malaria Prevention Experiment," The Quarterly Journal of Economics, MIT Press, vol. 125(1), pages 1-45, February.
  16. Liran Einav & Amy Finkelstein & Stephen P. Ryan & Paul Schrimpf & Mark R. Cullen, 2011. "Selection on Moral Hazard in Health Insurance," NBER Working Papers 16969, National Bureau of Economic Research, Inc.
  17. Ashok S. Rai & Tomas Sj–str–m, 2004. "Is Grameen Lending Efficient? Repayment Incentives and Insurance in Village Economies," Review of Economic Studies, Wiley Blackwell, vol. 71(1), pages 217-234, 01.
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