This paper addresses two issues – the time-inconsistency of optimal policy and the controllability of target variables within new-classical and new-Keynesian model structures. We can resolve both issues by delegation. That is, we design central bank loss functions by determining the two target...

The paper studies the dynamic nature of optimal solutions under commitment in Barro-Gordon and new-Keynesian models and, finds two interesting parameters - the implied targets and the persistence parameter that governs the adjustment toward the implied targets. The implied targets generally...

This paper shows that optimal policy and consistent policy outcomes require the use of control-theory and game-theory solution techniques. While optimal policy and consistent policy often produce different outcomes even in a one-period model, we analyze consistent policy and its outcome in a...

Kydland and Prescott (1977) show that optimal policy proves inconsistent because of rational expectations. This paper shows that the inconsistency of optimal policy comes from the inconsistency of the social loss function with the economic structure. As a result, we delegate to the central bank...

This paper uses two game-theory models, where monetary policy is first ineffective and then effective, to illustrate a delegation scheme that makes consistent policy optimal and controllable. The delegation scheme produces the minimization of both the social and the central bank loss functions....