TY - JOUR AU - Bernanke,Ben S. AU - Gertler,Mark TI - Inside the Black Box: The Credit Channel of Monetary Policy Transmission JF - National Bureau of Economic Research Working Paper Series VL - No. 5146 PY - 1995 Y2 - June 1995 UR - http://www.nber.org/papers/w5146 L1 - http://www.nber.org/papers/w5146.pdf N1 - Author contact info: Ben S. Bernanke E-Mail: Rita.C.Proctor@frb.gov, Michelle.A.Smith@frb.gov Mark Gertler Department of Economics New York University 269 Mercer Street, 7th Floor New York, NY 10003 Tel: 212/998-8931 Fax: 212/995-4186 E-Mail: mark.gertler@nyu.edu M2 - featured in NBER digest on 1996-02-01 AB - The 'credit channel' theory of monetary policy transmission holds that informational frictions in credit markets worsen during tight- money periods. The resulting increase in the external finance premium--the difference in cost between internal and external funds-- enhances the effects of monetary policy on the real economy. We document the responses of GDP and its components to monetary policy shocks and describe how the credit channel helps explain the facts. We discuss two main components of this mechanism, the balance-sheet channel and the bank lending channel. We argue that forecasting exercises using credit aggregates are not valid tests of this theory. ER -