Trust and Social Collateral
AbstractThis paper builds a theory of informal contract enforcement in social networks. In our model, relationships between individuals generate social collateral that can be used to control moral hazard when agents interact in a borrowing relationship. We define trust between two agents as the maximum amount that one can borrow from the other, and derive a simple reduced form expression for trust as a function of the social network. We show that trust is higher in more connected and more homogenous societies, and relate our trust measure to commonly used network statistics. Our model predicts that dense networks generate greater welfare when arrangements typically require high trust, and loose networks create more welfare otherwise. Using data on social networks and behavior in dictator games, we document evidence consistent with the quantitative predictions of the model.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 13126.
Date of creation: May 2007
Date of revision:
Publication status: published as Dean Karlan & Markus Mobius & Tanya Rosenblat & Adam Szeidl, 2009. "Trust and Social Collateral," The Quarterly Journal of Economics, MIT Press, vol. 124(3), pages 1307-1361, August.
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Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.
Web page: http://www.nber.org
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Other versions of this item:
- Karlan, Dean & Mobius, Markus & Rosenblat, Tanya & Szeidl, Adam, 2009. "Trust and Social Collateral," Staff General Research Papers 13026, Iowa State University, Department of Economics.
- Szeidl, Adam & Rosenblat, Tanya & Mobius, Markus & Karlan, Dean, 2009. "Trust and Social Collateral," Scholarly Articles 3051620, Harvard University Department of Economics.
- D02 - Microeconomics - - General - - - Institutions: Design, Formation, and Operations
- D23 - Microeconomics - - Production and Organizations - - - Organizational Behavior; Transaction Costs; Property Rights
This paper has been announced in the following NEP Reports:
- NEP-ALL-2007-06-02 (All new papers)
- NEP-EVO-2007-06-02 (Evolutionary Economics)
- NEP-EXP-2007-06-02 (Experimental Economics)
- NEP-HAP-2007-06-02 (Economics of Happiness)
- NEP-HPE-2007-06-02 (History & Philosophy of Economics)
- NEP-SOC-2007-06-02 (Social Norms & Social Capital)
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