IDEAS home Printed from
   My bibliography  Save this paper

Peer Grouping in An Adverse Selection Model


  • Beatriz Armendariz de Aghion

    (University College London)

  • Christian Gollier



This paper develops an adverse selection model which uncovers two mechanisms whereby Grameen-style peer grouping systems can trigger lower interest rates. In one extreme scenario, where participant borrowers do not have prior information about the type of their peers, lower interest rate are triggered by a `collateral effect'. In the opposite scenario, where participant borrowers have perfect knowledge about their peers, lower interest rates are triggered by a `self selection' effect. Because of the latter effect, peer grouping can be viewed as a mechanism for banks to extract information from borrowers. The existence of the former effect implies, however, that information extraction by banks necessary for peer grouping systems to succeed in reducing interest rates, and that peer grouping systems are potentially implementable beyond the sphere of village economies with perfect information.

Suggested Citation

  • Beatriz Armendariz de Aghion & Christian Gollier, 1996. "Peer Grouping in An Adverse Selection Model," Discussion Papers 96-24 ISSN 1350-6722, University College London, Department of Economics.
  • Handle: RePEc:wuk:ucloec:9624

    Download full text from publisher

    File URL:
    Download Restriction: no


    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.

    Cited by:

    1. Jonathan Conning, 2005. "Monitoring by Peers or by Delegates? Joint Liability Loans and Moral Hazard," Economics Working Paper Archive at Hunter College 407, Hunter College Department of Economics.
    2. Conning, Jonathan, 1999. "Outreach, sustainability and leverage in monitored and peer-monitored lending," Journal of Development Economics, Elsevier, vol. 60(1), pages 51-77, October.

    More about this item


    Credit; Peer-grouping; Adverse selection; Collateral; Selfselection;

    JEL classification:

    • O16 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Financial Markets; Saving and Capital Investment; Corporate Finance and Governance
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G20 - Financial Economics - - Financial Institutions and Services - - - General


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wuk:ucloec:9624. 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: (WoPEc Project). General contact details of provider: .

    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.

    We have no references for this item. You can help adding them by using 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 RePEc Author Service 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.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.