In this paper we argue that measured (RPI) inflation is conceptually mismatched with core inflation: the difference is more than just "measurement error". We propose a technique for measuring core inflation, based on an explicit long-run economic hypothesis. Core inflation is defined as that...

This paper models fluctuations in regional disaggregates as a non-stationary, dynamically evolving distribution. Doing so enables the study of the dynamics of aggregate fluctuations jointly with those of the rich cross-section of regional disaggregates. For the United States, the leading state...

I show that the Engle-Kozicki formulation of common features--applied to international business cycles--has some surprising, counterintuitive, and, I argue, undesirable implications. Such implications can be derived only on a case-by-case basis, however, and are necessarily specific to each...

Convergence concerns poor economies catching up with rich ones. At issue is what happens to the cross-sectional distribution of economies, not whether a single economy tends towards its own steady state. It is the latter, however, that has preoccupied the traditional approach to convergence...

We review the role of R&D in endogenous growth theory, and describe extant empirical research – macro and micro – bearing on R&D as an engine of growth. Taking R&D to be key, while recognizing the significance of economic incentives, emphasizes knowledge as an economic object and, more...

This Paper studies growth and inequality in China and India – two economies that account for a third of the world’s population. By modelling growth and inequality as components in a joint stochastic process, the Paper calibrates the impact each has no different welfare indicators and on the...

Many cultural products have the same non-rival nature as scientific knowledge. They therefore face identical difficulties in creation and dissemination. One traditional view says market failure is endemic – societies tolerate monopolistic inefficiency in intellectual property (IP) protection...

This paper shows how standard methods can be used to formulate and estimate a dynamic index model for random fields—stochastic processes indexed by time and cross section where the time-series and cross-section dimensions are comparable in magnitude. We use these to study dynamic comovements...