Many central banks give a high degree of prominence to the objective of controlling inflation. There are several price indexes that could be used by those banks to calculate inflation rates. The general principles guiding the choice of which index to use in the United States should be relevant...

For much of the last four decades, leading analysts have used large Keynesian macroeconomic models to prepare macroeconomic forecasts. More recently, VAR models have become a popular alternative. Despite their usefulness in preparing unconditional forecasts, VAR models are unsuitable for policy...

Why are forecasts of inflation from VAR models so much worse then their forecasts of real variables? This paper documents that relatively poor performance, and finds that the price equation of a VAR model fitted to U.S. postwar data is poorly specified. Statistical work by other authors has...

In several recent articles, authors have regressed actual values of macroeconomic aggregates on predicted values and claimed that they were testing the rationality of expectations. This paper interprets those regressions as testing a joint hypothesis of imperfect information and rational...

Thirty years ago it appeared that the best strategy for improving economic forecasts was to build bigger, more detailed models. As the cost of computing plummeted, considerable detail was added to models and more elaborate statistical techniques became feasible. Yet dissatisfaction with...