We study a class of infinite-horizon nonlinear dynamic economic models in which preferences, technology and laws of motion for exogenous variables can change over time either deterministically or stochastically, according to a Markov process with time-varying transition probabilities, or both....

Since the mid-1980s, monetary policy has contributed to a great moderation of the housing cycle by responding more proactively to inflation and thereby reducing the boom bust cycle. However, during the period from 2002 to 2005, the short term interest rate path deviated significantly from what...

We examine the quantitative impact of the Federal Reserve's mortgage-backed securities (MBS) purchase program. We focus on how much of the recent decline in mortgage interest rate spreads can be attributed to these purchases. The question is more difficult than frequently perceived because of...

In this paper we investigate the comparative properties of empirically-estimated monetary models of the U.S. economy. We make use of a new data base of models designed for such investigations. We focus on three representative models: the Christiano, Eichenbaum, Evans (2005) model, the Smets and...

We first document a large secular shift in the estimated response of the entire term structure of interest rates to inflation and output in the United States. The shift occurred in the early 1980s. We then derive an equation that links these responses to the coefficients of the central bank's...

At the center of the financial market crisis of 2007-2008 was a highly unusual jump in spreads between the overnight inter-bank lending rate and term London inter-bank offer rates (Libor). Because many private loans are linked to Libor rates, the sharp increase in these spreads raised the cost...

This paper documents the evolution of long-run inflation expectations and models the stance of monetary policy from 1965 to 1980. A host of survey-based measures and financial market data indicate that long-run inflation expectations rose markedly from 1965 to 1969, leveled off in the mid-1970s,...