TY - JOUR AU - Rotemberg,Julio J. TI - A Behavioral Model of Demandable Deposits and its Implications for Financial Regulation JF - National Bureau of Economic Research Working Paper Series VL - No. 16620 PY - 2010 Y2 - December 2010 UR - http://www.nber.org/papers/w16620 L1 - http://www.nber.org/papers/w16620.pdf N1 - Author contact info: Julio J. Rotemberg Graduate School of Business Harvard University, Morgan Hall Soldiers Field Boston, MA 02163 Tel: 617/495-1015 Fax: 617/496-5994 E-Mail: jrotemberg@hbs.edu AB - A model is developed which rationalizes contracts that give depositors the right to obtain funds on demand even when depositors intend to use these funds for consumption in the future. This is explained by depositor overoptimism regarding their own ability to collect funds in a run. Capitalized institutions serving depositors with such beliefs emerge in equilibrium even if depositors and bank owners have the same preferences and the same investment opportunities. Various government regulations of these institutions, including minimum capital levels, requirements concerning the assets they may hold, deposit insurance and compulsory clawbacks in bankruptcy can raise the average ex post welfare of depositors. ER -