January 2024 - Working Paper32068 This paper develops a procedure for uncovering the common cyclical factors that drive a mix of stationary and nonstationary variables. The method does not require knowing which variables are nonstationary or the nature of the nonstationarity. An application to the FREDMD macroeconomic dataset...
June 2021 - Working Paper28888 This paper develops a growth model characterized by equilibrium unemployment and sustained monopoly power. The level of demand is a key factor in deviations from the steady-state growth path with a Keynesian-type spending multiplier despite the absence of any nominal rigidities. The key friction in...
June 2020 - Working Paper27394 The underlying data from which the U.S. unemployment rate, labor-force participation rate, and duration of unemployment are calculated contain numerous internal contradictions. This paper catalogs these inconsistencies and proposes a unified reconciliation. We find that the usual statistics...
April 2020 - Working Paper27014 This paper surveys recent advances in drawing structural conclusions from vector autoregressions, providing a unified perspective on the role of prior knowledge. We describe the traditional approach to identification as a claim to have exact prior information about the structural model and propose...
January 2020 - Working Paper26606 This paper discusses the problems associated with using information about the signs of certain magnitudes as a basis for drawing structural conclusions in vector autoregressions. We also review available tools to solve these problems. For illustration we use Dahlhaus and Vasishtha's (2019) study of...
June 2019 - Working Paper25911 The Federal Reserve characterizes its current policy decisions in terms of targets for the fed funds rate and the size of its balance sheet. The fed funds rate today is essentially an administered rate that is heavily influenced by regulatory arbitrage and divorced from its traditional role as a...
April 2019 - Working Paper25778 A number of economic studies have used a proxy for world real economic activity derived from shipping costs. This measure turns out to depend on a normalization that has substantive consequences of which users of the index had been unaware prior to this paper. This paper further evaluates this and...
June 2018 - Working Paper24687 We review the recent U.S. monetary policy experience with large scale asset purchases (LSAPs) and draw lessons for monetary policy going forward. A rough consensus from previous studies is that LSAP purchases reduced yields on 10-year Treasuries by about 100 basis points. We argue that the consensus...
May 2018 - Working Paper24597 Reporting point estimates and error bands for structural vector autoregressions that are only set identified is a very common practice. However, unless the researcher is persuaded on the basis of prior information that some parameter values are more plausible than others, this common practice has no...
January 2018 - Working Paper24167 Traditional approaches to structural vector autoregressions can be viewed as special cases of Bayesian inference arising from very strong prior beliefs. These methods can be generalized with a less restrictive formulation that incorporates uncertainty about the identifying assumptions themselves. We...
June 2017 - Working Paper23480 A consensus has recently emerged that variables beyond the level, slope, and curvature of the yield curve can help predict bond returns. This paper shows that the statistical tests underlying this evidence are subject to serious small-sample distortions. We propose more robust tests, including a...
May 2017 - Working Paper23429 Here's why. (1) The HP filter produces series with spurious dynamic relations that have no basis in the underlying data-generating process. (2) Filtered values at the end of the sample are very different from those in the middle, and are also characterized by spurious dynamics. (3) A statistical...
July 2016 - Working Paper22451 This paper develops new estimates of flows into and out of unemployment that allow for unobserved heterogeneity across workers as well as direct effects of unemployment duration on unemployment-exit probabilities. Unlike any previous paper in this literature, we develop a complete dynamic...
January 2016 - Working Paper21863 Many economic time series exhibit dramatic breaks associated with events such as economic recessions, financial panics, and currency crises. Such changes in regime may arise from tipping points or other nonlinear dynamics and are core to some of the most important questions in macroeconomics. This...
August 2015 - Working Paper21476 We examine the behavior, determinants, and implications of the equilibrium level of the real federal funds rate, defined as the rate consistent with full employment and stable inflation in the medium term. We draw three main conclusions. First, the uncertainty around the equilibrium rate is large,...
December 2014 - Working Paper20741 This paper makes the following original contributions to the literature. (1) We develop a simpler analytical characterization and numerical algorithm for Bayesian inference in structural vector autoregressions that can be used for models that are overidentified, just-identified, or underidentified....
July 2014 - Working Paper20355 This year the oil industry celebrated its 155th birthday, continuing a rich history of booms, busts and dramatic technological changes. Many old hands in the oil patch may view recent developments as a continuation of the same old story, wondering if the high prices of the last decade will prove to...
February 2014 - Working Paper19892 The last decade brought substantial increased participation in commodity markets by index funds that maintain long positions in the near futures contracts. Policy makers and academic studies have reached sharply different conclusions about the effects of these funds on commodity futures prices. This...
August 2013 - Working Paper19297 Countries with high debt loads are vulnerable to an adverse feedback loop in which doubts by lenders lead to higher sovereign interest rates which in turn make the debt problems more severe. We analyze the recent experience of advanced economies using both econometric methods and case studies and...
July 2013 - Working Paper19253 Much attention has been given to the recent growth of the U.S. federal debt. This paper examines the growth of federal liabilities that are not included in the officially reported numbers. These take the form of implicit or explicit government guarantees and commitments. The five major categories...
May 2013 - Working Paper19056 If commercial producers or financial investors use futures contracts to hedge against commodity price risk, the arbitrageurs who take the other side of the contracts may receive compensation for their assumption of nondiversifiable risk in the form of positive expected returns from their positions....
January 2012 - Working Paper17759 This paper explores details behind the phenomenal increase in global crude oil production over the last century and a half and the implications if that trend should be reversed. I document that a key feature of the growth in production has been exploitation of new geographic areas rather than...
January 2012 - Working Paper17772 This paper develops new results for identification and estimation of Gaussian affine term structure models. We establish that three popular canonical representations are unidentified, and demonstrate how unidentified regions can complicate numerical optimization. A separate contribution of the paper...
June 1, 2011 - Article
The first decade of the new millennium brought a dramatic increase in the real price of crude petroleum. The price (in 2009 dollars) rose from about $30 a barrel in 2003 to an average of nearly $100 a barrel in 2008 (see the far right panel of Figure 1). Such a rapid price increase was not...
April 2011 - Working Paper16956 This paper reviews alternative options for monetary policy when the short-term interest rate is at the zero lower bound and develops new empirical estimates of the effects of the maturity structure of publicly held debt on the term structure of interest rates. We use a model of risk-averse...
April 2011 - Working Paper16931 Affine term structure models have been used to address a wide range of questions in macroeconomics and finance. This paper investigates a number of their testable implications which have not previously been explored. We show that the assumption that certain specified yields are priced without error...
February 2011 - Working Paper16790 This paper surveys the history of the oil industry with a particular focus on the events associated with significant changes in the price of oil. Although oil was used much differently and was substantially less important economically in the nineteenth century than it is today, there are interesting...
January 2011 - Working Paper16657 This paper develops a framework for inferring common Markov-switching components in a panel data set with large cross-section and time-series dimensions. We apply the framework to studying similarities and differences across U.S. states in the timing of business cycles. We hypothesize that there...
September 2010 - Working Paper16412 We introduce a novel method for estimating a monetary policy rule using macroeconomic news. We estimate directly the policy rule agents use to form their expectations by linking news' effects on forecasts of both economic conditions and monetary policy. Evidence between 1994 and 2007 indicates that...
July 2010 - Working Paper16186 This paper reviews some of the literature on the macroeconomic effects of oil price shocks with a particular focus on possible nonlinearities in the relation and recent new results obtained by Kilian and Vigfusson (2009)....
July 2010 - Working Paper16162 This paper surveys efforts to automate the dating of business cycle turning points. Doing this on a real time, out-of-sample basis is a bigger challenge than many academics might presume due to factors such as data revisions and changes in economic relationships over time. The paper stresses the...
February 2010 - Working Paper15736 This paper relates predictable gains from positions in fed funds futures contracts to violations of the expectations hypothesis of the term structure of interest rates. Although evidence for predictable gains from positions in short-horizon contracts is mixed, we find that gains in longer horizon...
May 2009 - Working Paper15002 This paper explores similarities and differences between the run-up of oil prices in 2007-08 and earlier oil price shocks, looking at what caused the price increase and what effects it had on the economy. Whereas historical oil price shocks were primarily caused by physical disruptions of supply,...
March 1, 2009 - Article
The $140/barrel price in the summer of 2008 and the $60/barrel in November of 2008 could not both be consistent with the same calculation of a scarcity rent warranted by long-term fundamentals. What caused the high price of oil in the summer of 2008? In...
November 2008 - Working Paper14492 This paper examines the factors responsible for changes in crude oil prices. The paper reviews the statistical behavior of oil prices, relates these to the predictions of theory, and looks in detail at key features of petroleum demand and supply. Topics discussed include the role of commodity...
August 2008 - Working Paper14223 This paper offers an explication of the hump-shaped response of real economic activity to changes in monetary policy, focusing on the particular channel operating through new home sales. I suggest that the conventional notion of a monetary policy shock as a surprise change in the fed funds rate is...
June 2008 - Working Paper14151 Although ARCH-related models have proven quite popular in finance, they are less frequently used in macroeconomic applications. In part this may be because macroeconomists are usually more concerned about characterizing the conditional mean rather than the conditional variance of a time series. This...
November 2007 - Working Paper13569 This paper develops a generalization of the formulas proposed by Kuttner (2001) and others for purposes of measuring the effects of a change in the fed funds target on Treasury yields of different maturities. The generalization avoids the need to condition on the date of the target change and allows...
May 2007 - Working Paper13112 This paper explores the properties of daily changes in the prices for near-term fed funds futures contracts. The paper finds these contracts to be excellent predictors of the fed funds rate, and shows that the claim of a nonzero term premium in the short-horizon contracts is more sensitive to...
June 2005 - Working Paper11422 This paper discusses formal quantitative algorithms that can be used to identify business cycle turning points. An intuitive, graphical derivation of these algorithms is presented along with a description of how they can be implemented making very minimal distributional assumptions. We also provide...
February 2005 - Working Paper11161 This paper argues that a linear statistical model with homoskedastic errors cannot capture the nineteenth-century notion of a recurring cyclical pattern in key economic aggregates. A simple nonlinear alternative is proposed and used to illustrate that the dynamic behavior of unemployment seems to...
June 2003 - Working Paper9741 The menu-cost interpretation of sticky prices implies that the probability of a price change should depend on the past history of prices and fundamentals only through the gap between the current price and the frictionless price. We find that this prediction is broadly consistent with the behavior of...
October 2000 - Working Paper7954 This paper revisits the yield spread's usefulness for predicting future real GDP growth. We show that the contribution of the spread can be decomposed into the effect of expected future changes in short rates and the effect of the term premium. We find that both factors are relevant for predicting...
August 2000 - Working Paper7847 This paper is a statistical analysis of the manner in which the Federal Reserve determines the level of the Federal funds rate target, one of the most publicized and anticipated economic indicators in the financial world. The analysis presents two econometric challenges: (1) changes in the target...
June 2000 - Working Paper7755 This paper uses a flexible approach to characterize the nonlinear relation between oil price changes and GDP growth. The paper reports clear evidence of nonlinearity, consistent with earlier claims in the literature-- oil price increases are much more important than oil price decreases, and...
November 1989 - Working Paper3165 The value of the dollar appears to move in one direction for long periods of time. We develop a new statistical model of exchange rate dynamics as a sequence of stochastic, segmented time trends. The paper implements new techniques for parameter estimation and hypothesis testing for this framework....
June 1985 - Working Paper1632 This paper seeks to distinguish empirically between two views on the limitations of government borrowing. According to one view, nothing precludes the government from running a permanent budget deficit, paying interest due on the growing debt load simply by issuing new debt, An alternative...
