Does Conservatism Matter? A Time Series Approach to Central Banking

The empirical literature on central banking has found measures of central bank independence/conservatism to be negatively correlated with inflation and inflation variance across countries. But the cross-country approach has been criticised for its focus on policy outcomes instead of policies, and for the unsystematic conflation of the concepts of independence and conservatism. We present results from a single-country time series model for the German Bundesbank that avoids these shortfalls. We find that an increase in central bank conservatism leads to higher short-term interest rates and a more activist stabilisation policy with respect to macroeconomic shocks. More conservative Bundesbank regimes are associated with a less volatile economy, higher output and somewhat lower inflation. We also investigate the interaction between the central bank and the government. It turns out that non-conservative Bundesbank Councils react more strongly to macroeconomic shocks under conservative than under non-conservative government regimes