A Simple Model of Credit Rationing with Information Externalities
Credit-rationing model similar to Stiglitz and Weiss  is combined with the information externality model of Lang and Nakamura  to examine the properties of mortgage markets characterized by both adverse selection and information externalities. In a credit-rationing model, additional information increases lenders ability to distinguish risks, which leads to increased supply of credit. According to Lang and Nakamura, larger supply of credit leads to additional market activities and therefore, greater information. The combination of these two propositions leads to a general equilibrium model. This paper describes properties of this general equilibrium model. The paper provides another sufficient condition in which credit rationing falls with information. In that, external information improves the accuracy of equity-risk assessments of properties, which reduces credit rationing. Contrary to intuition, this increased accuracy raises the mortgage interest rate. This allows clarifying the trade offs associated with reduced credit rationing and the quality of applicant pool.
|Date of creation:||Apr 2005|
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- Avery, Robert B. & Beeson, Patricia E. & Sniderman, Mark S., 1999. "Neighborhood Information and Home Mortgage Lending," Journal of Urban Economics, Elsevier, vol. 45(2), pages 287-310, March.
- Stephen Ross & AKM Rezaul Hossain, 2004. "A Direct Test of the Lang and Nakamura Hypothesis of Information Externalities over Space," Econometric Society 2004 North American Summer Meetings 398, Econometric Society.
- Brueckner, Jan K, 2000. "Mortgage Default with Asymmetric Information," The Journal of Real Estate Finance and Economics, Springer, vol. 20(3), pages 251-274, May.
- Stiglitz, Joseph E & Weiss, Andrew, 1981. "Credit Rationing in Markets with Imperfect Information," American Economic Review, American Economic Association, vol. 71(3), pages 393-410, June.
- Harrison, David M., 2001. "The Importance of Lender Heterogeneity in Mortgage Lending," Journal of Urban Economics, Elsevier, vol. 49(2), pages 285-309, March.
- Ben-Shahar, Danny & Feldman, David, 2003. "Signaling-Screening Equilibrium in the Mortgage Market," The Journal of Real Estate Finance and Economics, Springer, vol. 26(2-3), pages 157-178, March-May.
- Bester, Helmut, 1985. "Screening vs. Rationing in Credit Markets with Imperfect Information," American Economic Review, American Economic Association, vol. 75(4), pages 850-855, September.
- Calem, Paul S, 1996. "Mortgage Credit Availability in Low- and Moderate-Income Minority Neighborhoods: Are Information Externalities Critical?," The Journal of Real Estate Finance and Economics, Springer, vol. 13(1), pages 71-89, July.
- Besanko, David & Thakor, Anjan V, 1987. "Collateral and Rationing: Sorting Equilibria in Monopolistic and Competitive Credit Markets," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 28(3), pages 671-689, October.
- Paul S. Calem & Michael J. Stutzer, 1995. "The simple analytics of observed discrimination in credit markets," Working Papers 95-7, Federal Reserve Bank of Philadelphia.
- Ling, David C. & Wachter, Susan M., 1998. "Information Externalities and Home Mortgage Underwriting," Journal of Urban Economics, Elsevier, vol. 44(3), pages 317-332, November.
- Calem Paul & Stutzer Michael, 1995. "The Simple Analytics of Observed Discrimination in Credit Markets," Journal of Financial Intermediation, Elsevier, vol. 4(3), pages 189-212, July.
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