Search Results
Working Paper
Transparency and credibility: monetary policy with unobservable goals
We define and study transparency, credibility, and reputation in a model where the central bank's characteristics are unobservable to the private sector and are inferred from the policy outcome. A low-credibility bank optimally conducts a more inflationary policy than a high-credibility bank, in the sense that it induces higher inflation, but a less expansionary policy in the sense that it induces lower inflation and employment than expected. Increased transparency makes the bank's reputation and credibility more sensitive to its actions. This has a moderating influence on the bank's policy. ...
Working Paper
Near observational equivalence and unit root processes: formal concepts and implications
A number of recent papers have discussed the fact that difference stationary and trend stationary processes are nearly observationally equivalent. The meaning of this fact, however, remains clouded. This paper defines near observational equivalence and derives several implications of the notion for classical and Bayesian unit root inference. For example, unless restrictions are imposed on the general difference and trend stationary models, the exact size of any consistent unit root test rises to one with sample size. Bayesian posteriors regarding unit roots are arbitrary in the sense that ...
Working Paper
When do long-run identifying restrictions give reliable results?
Many recent papers have tried to identify behavioral disturbances in vector autoregressions (VAR's) by imposing restrictions on the long-run effects of shocks. This paper argues that this approach will support reliable structured inferences only if the underlying economy satisfies strong restrictions. Absent restrictions linking long-run and short-run dynamics, every decomposition of a VAR is essentially equally consistent with any long-run restriction. Further, dynamic common factor restrictions must hold if the scheme is to work properly in small models estimated using time-aggregated data. ...
Working Paper
Exchange rate forecasting: the errors we've really made
We examine the forecasting performance of standard macro models of exchange rates in real time, using dozens of different vintages of the OECD's Main Economic Indicators database. We calculate out-of-sample forecasts as they would have been made at the time, and compare them to a random walk alternative. The resulting "time series" of forecast performance indicates that both data revisions and changes in the sample period typically have large effects on exchange rate predictability. We show that the favorable evidence of long-horizon exchange rate predictability for the DM and Yen in Mark ...
Working Paper
General-to-specific procedures for fitting a data-admissible, theory- inspired, congruent, parsimonious, encompassing, weakly-exogenous, identified, structural model to the DGP: a translation and critique
We characterize the LSE approach by its implications for reduced-form modeling and structural interpretations. Much of what has come to be associated with the LSE methodology involves the approach to fitting reduced forms, and can be thought of as a pragmatic solution to problems created by short samples plagued by serial correlation. The policy analysis one might be able to do with an LSE model, on the other hand, hinges on structural identification arguments which do not meet the classic Cowles Commission standards, and is thus suspect.
Conference Paper
Introduction
Journal Article
An investigation of co-movements among the growth rates of the G-7 countries
Early in 2000, after a decade of economic expansion, growth began to slow simultaneously in the large, advanced economies known as the Group of Seven (G-7)--Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States. The general slide in GDP growth fueled speculation that a period was emerging in which broad movements in the economies of the industrialized countries would be more closely linked. Proponents of this view argued that greater trade in goods and financial markets was leading to a greater synchronization of national economies. A rise in the co-movement of GDP ...