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A Simple Model of Credit Rationing with Information Externalities

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  • AKM Rezaul Hossain

    (University of Connecticut)

Abstract

Credit-rationing model similar to Stiglitz and Weiss [1981] is combined with the information externality model of Lang and Nakamura [1993] 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.

Suggested Citation

  • AKM Rezaul Hossain, 2005. "A Simple Model of Credit Rationing with Information Externalities," Working papers 2005-11, University of Connecticut, Department of Economics.
    • Handle: RePEc:uct:uconnp:2005-11
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    References listed on IDEAS

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    1. 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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    3. 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.
    4. Harrison, David M., 2001. "The Importance of Lender Heterogeneity in Mortgage Lending," Journal of Urban Economics, Elsevier, vol. 49(2), pages 285-309, March.
    5. 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.
    6. Lang William W. & Nakamura Leonard I., 1993. "A Model of Redlining," Journal of Urban Economics, Elsevier, vol. 33(2), pages 223-234, March.
    7. 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.
    8. 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.
    9. Michael Rothschild & Joseph Stiglitz, 1976. "Equilibrium in Competitive Insurance Markets: An Essay on the Economics of Imperfect Information," The Quarterly Journal of Economics, Oxford University Press, vol. 90(4), pages 629-649.
    10. 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.
    11. 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.
    12. 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.
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    More about this item

    Keywords

    Credit rationing; Information Externalities; Adverse selection; Mortgage underwriting.;
    All these keywords.

    JEL classification:

    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium
    • R31 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Real Estate Markets, Spatial Production Analysis, and Firm Location - - - Housing Supply and Markets
    • R51 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Regional Government Analysis - - - Finance in Urban and Rural Economies

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