Do openness to trade and higher levels of human capital promote faster productivity growth? That they do is a key implication of several versions of endogenous growth theory. To answer the question we use panel data on 93 countries spanning the 1970-2000 period. Controlling for fixed effects as...

Do openness to trade and higher levels of human capital growth promote faster growth? To answer that question we use a panel of countries to investigate the role of human capital and two measures of openness in determining both the level of income and its growth rate. We argue that focusing on...

The paper measures productivity growth in seventeen countries in the nineteenth and twentieth centuries.  GDP per worker and capital per worker in 1985 US dollars were estimated for 1820, 1850, 1880, 1913, 1939 by using historical national accounts to back cast Penn World Table data for 1965...

This paper surveys the most popular parametric and semi-parametric estimators for Cobb-Douglas production functions arising from the econometric literature of the past two decades. We focus on the different approaches dealing with 'transmission bias' in firm-level studies, which arises from...

In this paper we review some recent work on limit results on realised power variation, that is sums of powers of absolute increments of various semimartingales. A special case of this analysis is realised variance and its probability limit, quadratic variation. Such quantities often appear in...

Estimating the covariance and correlation between assets using high frequency data is challenging due to market microstructure effects and Epps effects.  In this paper we extend Xiu's univariate QML approach to the multivariate case, carrying out inference as if the observations arise from an...

The labour productivity differentials between manufacturing firms in Ghana and South Korea exceed those implied by macro analysis.  Median value-added per employee is nearly 40 times higher in South Korea than Ghana.  The most important single factor in explaining this difference is the...

Chinese economic growth has been spectacular in the last 30 years.  We investigate the role of International Joint Ventures with Technology Transfer agreements, an understudied area.  Technology transfer is the traditional mechanism for developing countries to "catch up" and has been a key...

High frequency financial data allows us to learn more about volatility, volatility of volatility and jumps.  One of the key techniques developed in the literature in recent years has been bipower variation and its multipower extension, which estimates time-varying volatility robustly to...

This paper looks at some recent work on estimating quadratic variation using realised variance (RV) - that is sums of M squared returns. This econometrics has been motivated by the advent of the common availability of high frequency financial return data. When the underlying process is a...