Posted

June 16, 2013 02:00:48 AM

Date

2012-09

Author

Florina-Cristina Badarau and Alexandra Popescu

Affiliation

Larefi - Laboratoire d'analyse et de recherche en économie et finance internationales - Université Montesquieu and LEO - Laboratoire d'économie d'Orleans - Université d'Orléans

Title

Monetary Policy and Credit Cycles: A DSGE Analysis

Summary /
Abstract

The recent financial crisis revealed several flaws in both monetary and financial regulation. Contrary to what was believed, price stability is not a sufficient condition for financial stability. At the same time, micro-prudential regulation alone becomes insufficient to ensure the financial stability objective. In this paper, we propose an ex-post analysis of what a central bank could have done to improve the reaction of the economy to the financial bubble. We study by means of a financial accelerator DSGE model the dynamics of our economy when the central bank has, first, only traditional objectives, and second, when an additional financial stability objective is added. Overall, results indicate that a more aggressive monetary policy would have had little success in improving the response of the economy to the financial bubble, as the actions of the central bank would have remained limited by the use of a single instrument, the interest rate.

Keywords

Bank capital channel, credit cycles, financial stability, monetary policy.

URL

http://halshs.archives-ouvertes.fr/docs/00/82/80/74/PDF/dr201214.pdf

Remarks

The above analytical paper concludes that raising the interest rate to counter an asset price bubble makes matters worse, assuming that the central bank uses only this single policy instrument in an augmented Taylor rule (augmented to include a credit-to-GDP ratio as a third argument besides inflation and unemployment--all three variables measured as deviations from their steady-state values). The reason is that raising the interest rate "fails to discourage speculative investors. Actually, higher interest rates attract only risky agents (Stiglitz and Weiss, 1981, reference by the authors)." This is the same argument I used in my recent paper,"Should Policymakers Respond Directly to Financial Stability in Their Interest-Rate Rule?" in The Future of Inflation Targeting (http://www.seacen.org/products/702001-100305-PDF.pdf).

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