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Federal Reserve Bank of San Francisco
Working Paper Series
Do credit constraints amplify macroeconomic fluctuations?
Zheng Liu
Pengfei Wang
Tao Zha

Previous studies on financial frictions have been unable to establish the empirical significance of credit constraints in macroeconomic fluctuations. This paper argues that the muted impact of credit constraints stems from the absence of a mechanism to explain the observed persistent comovements between housing prices and business investment. We develop such a mechanism by incorporating two key features into a DSGE model: we identify shocks that shift the demand for collateral assets and we allow productive agents to be credit-constrained. A combination of these two features enables our model to successfully generate an empirically important mechanism that amplifies and propagates macroeconomic fluctuations through credit constraints.

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Zheng Liu & Pengfei Wang & Tao Zha, Do credit constraints amplify macroeconomic fluctuations?, Federal Reserve Bank of San Francisco, Working Paper Series 2009-28, 2009.
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Keywords: Credit ; Macroeconomics - Econometric models
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