IDEAS home Printed from
MyIDEAS: Log in (now much improved!) to save this paper

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.

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

File URL:
Download Restriction: no

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

in new window

Date of creation: Jan 2012
Date of revision:
Handle: RePEc:ecl:yaleco:99
Contact details of provider: Postal:
PO Box 8268, New Haven CT 06520-8268

Phone: (203) 432-3576
Fax: (203) 432-5779
Web page:

More information through EDIRC

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

as in new window
  1. Liran Einav & Amy Finkelstein & Stephen Ryan & Paul Schrimpf & Mark Cullen, 2011. "Selection on Moral Hazard in Health Insurance," Discussion Papers 10-027, Stanford Institute for Economic Policy Research.
  2. Chassang, Sylvain & Padró i Miquel, Gerard & Snowberg, Erik, 2010. "Selective Trials: A Principal-Agent Approach to Randomized Controlled Experiments," CEPR Discussion Papers 8003, C.E.P.R. Discussion Papers.
  3. Stefan Klonner & Ashok Rai, 2008. "Cosigners as Collateral," Department of Economics Working Papers 2008-04, Department of Economics, Williams College.
  4. Oded Galor & Joseph Zeira, 2013. "Income Distribution and Macroeconomics," Working Papers 2013-12, Brown University, Department of Economics.
  5. Ashok S. Rai & Tomas Sjöström, 2004. "Is Grameen Lending Efficient? Repayment Incentives and Insurance in Village Economies," Review of Economic Studies, Oxford University Press, vol. 71(1), pages 217-234.
  6. 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.
  7. Guinnane, T. & Banerjee, A. & Besley, T., 1993. "Thy Neighbor's Keeper: the Design of a Credit Cooperative with Theory and a Test," Papers 705, Yale - Economic Growth Center.
  8. Bond, Philip & Rai, Ashok S., 2008. "Cosigned vs. group loans," Journal of Development Economics, Elsevier, vol. 85(1-2), pages 58-80, February.
  9. Jessica Cohen & Pascaline Dupas, 2010. "Free Distribution or Cost-Sharing? Evidence from a Randomized Malaria Prevention Experiment," The Quarterly Journal of Economics, Oxford University Press, vol. 125(1), pages 1-45.
  10. Ghatak, Maitreesh, 1999. "Group lending, local information and peer selection," Journal of Development Economics, Elsevier, vol. 60(1), pages 27-50, October.
  11. Karlan, Dean S. & Zinman, Jonathan, 2007. "Observing Unobservables: Identifying Information Asymmetries with a Consumer Credit Field Experiment," CEPR Discussion Papers 6182, C.E.P.R. Discussion Papers.
  12. 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.
  13. 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.
  14. Xavier Giné & Pamela Jakiela & Dean Karlan & Jonathan Morduch, 2010. "Microfinance Games," American Economic Journal: Applied Economics, American Economic Association, vol. 2(3), pages 60-95, July.
  15. Xavier Gine & Dean Karlan, 2006. "Group versus Individual Liability: A Field Experiment in the Philippines," Working Papers 940, Economic Growth Center, Yale University.
  16. DeanS. Karlan, 2007. "Social connections and group banking," Economic Journal, Royal Economic Society, vol. 117(517), pages F52-F84, 02.
  17. Jessica Cohen & Pascaline Dupas, 2008. "Free Distribution or Cost-Sharing? Evidence from a Malaria Prevention Experiment," NBER Working Papers 14406, National Bureau of Economic Research, Inc.
  18. 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.
Full references (including those not matched with items on IDEAS)

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:ecl:yaleco:99. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.