While the degree of policy inertia in central banks' reaction functions is a central ingredient in theoretical and empirical monetary economics, the source of the observed policy inertia in the U.S. is controversial, with tests of competing hypotheses such as interest-smoothing and...

We investigate the source of the high persistence in the Federal Funds Rate relative to the predictions of simple Taylor rules. While much of the literature assumes that this reflects interest-smoothing on the part of monetary policy-makers, an alternative explanation is that it represents...