DP1386 Rogoff's 'Conservative' Central Banker Restored

Author(s):	Berthold Herrendorf, Ben Lockwood
Publication Date:	April 1996
Keyword(s):	Conservative Central Banker, Delegation, Incomplete Information
JEL(s):	E52, E58
Programme Areas:	International Macroeconomics
Link to this Page:	cepr.org/active/publications/discussion_papers/dp.php?dpno=1386

This paper shows that delegation of monetary policy to a weight-conservative central banker is optimal, although the government can also use an inflation contract, an employment target, an inflation target, or any combination of these, to control the central banker. The key feature of our model is a stochastic inflation bias, arising when wage-setters receive some information about a supply shock prior to signing nominal wage contracts. Weight-conservatism is shown to be desirable if the stochastic inflation bias cannot be eliminated by optimal choice of the delegation parameters.