We formulate the central bank's problem of selecting an optimal long-run inflation rate as the choice of a distorting tax by a planner who wishes to maximize discounted stationary utility for a heterogeneous population of infinitely-lived households in an economy with constant aggregate income....

We study how the use of judgement or add-factors in macroeconomic forecasting may disturb the set of equilibrium outcomes when agents learn using recursive methods. We isolate conditions under which "exuberance equilibria" exist in standard macroeconomic environments. These equilibria may...

The U.S economy has accumulated in recent years seemingly excessive levels of household debt. U.S monetary policy has responded to the situation by keeping real interest rates low. Critics of the low real interest rate policy contend that such a policy helps borrowers and punishes savers, thus...

We study the connections between determinacy of rational expectations equilibrium, and expectational stability or learnability of that equilibrium, in a relatively general New Keynesian model. Adoption of policies that induce both determinacy and learnability of equilibrium has been considered...

We study a theory in which households borrow during the first half of a 241-period life cycle as part of a DSGE. Households confront a persistent regime-switching process on aggregate labor productivity growth. When the economy switches to the high growth regime, there is more borrowing based on...

We study a stylized theory of the volatility reduction in the U.S. after 1984---the Great Moderation---which attributes part of the stabilization to less volatile shocks and another part to more difficult inference on the part of Bayesian households attempting to learn the latent state of the...