A New Measure of Monetary Shocks

Conventional measures of monetary policy, such as the federal funds rate, are surely influenced by forces other than monetary policy. More importantly, central banks adjust policy in response to a wide range of information about future economic developments. As a result, estimates of the effects of monetary policy derived using conventional measures will tend to be biased. To address this problem, we develop a new measure of monetary policy shocks in the United States for the period 1969 to 1996 that is relatively free of endogenous and anticipatory movements. The derivation of the new measure has two key elements. First, to address the problem of forward-looking behavior, we control for the Federal Reserve's forecasts of output and inflation prepared for scheduled FOMC meetings. We remove from our measure policy actions that are a systematic response to the Federal Reserve's anticipations of future developments. Second, to address the problem of endogeneity and to ensure that the forecasts capture the main information the Federal Reserve had at the times decisions were made, we consider only changes in the Federal Reserve's intentions for the federal funds rate around scheduled FO