We identify an inflationary technology news shock as the leading source of business cycle variations for the postwar U.S. economy. This shock acts like a demand shock: it induces strong positive comovement in real quantities - GDP, consumption, investment - and weak positive comovement between...

Structural models are a powerful tool for business cycle and monetary policy analysis because they are invariant to either policy changes or external shocks. In this paper, we derive a Sidrauski-type model in which both the demand and supply side are structural in the sense that the behavioral...

A VAR model estimated on U.S. data before and after 1980 documents systematic differences in the response of short- and long-term interest rates, corporate bond spreads and durable spending to news TFP shocks. Interest rates across the maturity spectrum broadly increase in the pre-1980s and...

We develop a simple and intuitive approach for analytically deriving unconditionally optimal (UO) policies, a topic of enduring interest in optimal monetary policy analysis. The approach can be employed to both general linear-quadratic problems and to the underlying non-linear environments. We...

For over a decade of practicing inflation targeting (IT) strategy, inflation has remained high and persistent while economic growth momentum has boosted in Ghana. This paper investigates the relative macroeconomic benefits of the IT strategy in Ghana based on business cycle fluctuations and...

Is monetary policy less effective at stimulating investment during periods of elevated volatility (when all firms experience an increase in the variance of their productivity shocks) than during normal times? In this paper, I argue that elevated volatility leads to a decrease in extensive margin...

We estimate a Heterogeneous-Agent New Keynesian model with sticky household expectations that matches existing microeconomic evidence on marginal propensities to consume and macroeconomic evidence on the impulse response to a monetary policy shock. Our estimated model uncovers a central role for...

Empirical evidence demonstrates that credit standards, including lending margins and collateral requirements, move in a countercyclical direction. In this study, we construct a small open economy model with financial frictions to generate the countercyclical movement in credit standards. Our...

This paper examines the effects of labor-replacing capital, which we call robots, on business cycle dynamics using a New Keynesian model with a role for both traditional and robot capital. We find that shocks to the price of robots have effects on output, employment, wages, and labor's share of...

We propose a theoretical framework to reconcile episodes of V-shaped and L-shaped recovery, en- compassing the behaviour of the U.S. economy before and after the Great Recession. In a DSGE model with endogenous growth, negative demand shocks destroy productive capacity, moving GDP to a lower...