Andolfatto, David and Nosal, Ed (2006): Moral Hazard in the Diamond-Dybvig Model of Banking.
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We modify the Diamond-Dybvig  model studied in Green and Lin  to incorporate a self-interested banker who has a private record-keeping technology. A public record-keeping device does not exist. We find that there is a trade-off between sophisticated contracts that possess relatively good risk-sharing properties but allocate resources inefficiently for incentive reasons, and simple contracts that possess relatively poor risk-sharing properties but economize on the inefficient use of resources. While this trade-off depends on model parameters, we find that simple contracts prevail under a wide range of empirically plausible parameter values. Although moral hazard in banking may simplify the optimal structure of deposit liabilities, this simple structure does not enhance the prospect of bank runs.
|Item Type:||MPRA Paper|
|Institution:||Simon Fraser University|
|Original Title:||Moral Hazard in the Diamond-Dybvig Model of Banking|
|Keywords:||Banking; Private record-keeping; Moral hazard; Mechanisms; Bank runs|
|Subjects:||G - Financial Economics > G2 - Financial Institutions and Services > G21 - Banks ; Depository Institutions ; Micro Finance Institutions ; Mortgages|
|Depositing User:||David Andolfatto|
|Date Deposited:||06. Jan 2007|
|Last Modified:||12. May 2015 20:23|
 D. Andolfatto, E. Nosal and N. Wallace, The role of independence in the Green-Lin Diamond-Dybvig Model. Forthcoming, J. Econ. Theory.  C. Calomiris and C. Kahn, The role of demandable debt in structuring optimal banking arrangements. Amer. Econ. Review 81 (1991), pp. 497-513.  D. Diamond and P. Dybvig, Bank runs, deposit insurance, and liquidity. J. Polit. Econ. 91 (1983), pp. 401-419.  D. Diamond, Financial intermediation and delegated monitoring, Rev. Econ. Studies 51 (1984), pp. 393-414.  E. Green and P. Lin, Implementing efficient allocations in a model of financial intermediation, J. Econ. Theory 109 (2003), pp. 1-23.  S. Krasa and A.P. Villamil, Monitoring the monitor: An incentive structure for a financial intermediary. J. Econ. Theory 57 (1992), pp. 197-221.  J. Peck and K. Shell, Equilibrium Bank Runs, J. Polit. Econ. 111 (2003), pp. 103-123.  N. Wallace, Another attempt to explain an illiquid banking: the Diamond--Dybvig model with sequential service taken seriously. Fed. Reserve Bank Minneapolis Quart. Rev. 12 (1988), pp. 3--16.