Monetary Policy and Herd Behavior : Leaning Against Bubbles
We study the role of monetary policy when asset-price bubbles may form due to herd behavior in investment in an asset whose return is uncertain. To that aim, we build a simple general equilibrium model whose agents are households, entrepreneurs, and a central bank. Entrepreneurs receive private signals about the productivity of the new technology and borrow from households to publicly invest in the old or the new technology. The three main results of the paper are that bubbles (informational cascades) can occur in this general equilibrium setting; that the central bank can detect them even though it has directly access to less information than the investors; and that the central bank can eliminate bubbles by manipulating the interest rate. Indeed, monetary policy, by affecting the investors' cost of resources, can make them invest in the new technology if and only if they receive an encouraging private signal about its productivity. In doing so, it makes their investment decision reveal their private signal, and therefore prevents herd behavior and the asset-price bubble. We also show that such a \leaning against the wind" monetary policy, contingent on the central bank's information set, may be preferable to laisser-faire, in terms of ex ante welfare
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- Nir Jaimovich & Sergio Rebelo, 2006.
"Can News About the Future Drive the Business Cycle?,"
NBER Working Papers
12537, National Bureau of Economic Research, Inc.
- Nir Jaimovich & Sergio Rebelo, 2009. "Can News about the Future Drive the Business Cycle?," American Economic Review, American Economic Association, vol. 99(4), pages 1097-1118, September.
- Nir Jaimovich & Sergio Rebelo, 2006. "Can News About the Future Drive the Business Cycle?," 2006 Meeting Papers 31, Society for Economic Dynamics.
- Jaimovich, Nir & Rebelo, Sérgio, 2006. "Can News About the Future Drive the Business Cycle?," CEPR Discussion Papers 5877, C.E.P.R. Discussion Papers.
- Ben Bernanke & Mark Gertler, 1999.
"Monetary policy and asset price volatility,"
Proceedings - Economic Policy Symposium - Jackson Hole,
Federal Reserve Bank of Kansas City, pages 77-128.
- Chari, V. V. & Kehoe, Patrick J., 2004.
"Financial crises as herds: overturning the critiques,"
Journal of Economic Theory,
Elsevier, vol. 119(1), pages 128-150, November.
- V. V. Chari & Patrick J. Kehoe, 2003. "Financial crises as herds: overturning the critiques," Staff Report 316, Federal Reserve Bank of Minneapolis.
- V. V. Chari & Patrick J. Kehoe, 2003. "Financial Crises as Herds: Overturning the Critiques," NBER Working Papers 9658, National Bureau of Economic Research, Inc.
- Decamps, Jean-Paul & Lovo, Stefano, 2006. "Informational cascades with endogenous prices: The role of risk aversion," Journal of Mathematical Economics, Elsevier, vol. 42(1), pages 109-120, February.
- Ben S. Bernanke & Mark Gertler, 2001. "Should Central Banks Respond to Movements in Asset Prices?," American Economic Review, American Economic Association, vol. 91(2), pages 253-257, May.
- Beaudry, Paul & Portier, Franck, 2001.
"An Exploration into Pigou's Theory of Cycles,"
CEPR Discussion Papers
2996, C.E.P.R. Discussion Papers.
- Christiano, Lawrence & Ilut, Cosmin & Motto, Roberto & Rostagno, Massimo, 2008. "Monetary policy and stock market boom-bust cycles," Working Paper Series 0955, European Central Bank.
- Banerjee, Abhijit V, 1992. "A Simple Model of Herd Behavior," The Quarterly Journal of Economics, MIT Press, vol. 107(3), pages 797-817, August.
- Lawrence R. Glosten & Paul R. Milgrom, 1983.
"Bid, Ask and Transaction Prices in a Specialist Market with Heterogeneously Informed Traders,"
570, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Glosten, Lawrence R. & Milgrom, Paul R., 1985. "Bid, ask and transaction prices in a specialist market with heterogeneously informed traders," Journal of Financial Economics, Elsevier, vol. 14(1), pages 71-100, March.
- Gale, D. & Chamley, C., 1992.
"Information Revelation and Strategic Delay in a Model of Investment,"
10, Boston University - Department of Economics.
- Chamley, Christophe & Gale, Douglas, 1994. "Information Revelation and Strategic Delay in a Model of Investment," Econometrica, Econometric Society, vol. 62(5), pages 1065-85, September.
- Gilchrist, Simon & Leahy, John V., 2002. "Monetary policy and asset prices," Journal of Monetary Economics, Elsevier, vol. 49(1), pages 75-97, January.
- Avery, Christopher & Zemsky, Peter, 1998. "Multidimensional Uncertainty and Herd Behavior in Financial Markets," American Economic Review, American Economic Association, vol. 88(4), pages 724-48, September.
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