The paper attempts to explain why single factor explanations of the poverty of nations are usually found to be unsatisfactory. Middle- and low-income countries excluding sub-Saharan Africa, for instance, have an income per head which stands at about one third of the rich countries’ income per...

We attempt to explain why standard explanations of the poverty of nations are unsatisfactory. We first argue that human capital is low in poor countries because its production has increasing returns with respect to life expectancy. We then show that the reason why capital does not flow to poor...

We present a new data set for years of schooling across countries for the 1960–2000 period. The series are constructed from the OECD database on educational attainment and from surveys published by UNESCO. Two features that improve the quality of our data with respect to other series,...

The capital-output ratio is more than 40% lower in the poor countries than in the richest ones. Comparing TFP in manufacturing and in the economy at large, we show that the Balassa-Samuelson effect explains the bulk of this scarcity: TFP in manufacturing is indeed about 40% lower than TFP in the...

This Paper presents a new set of data on human capital. It is constructed so as to stay as close as possible to the censuses compiled by national, OECD or UNESCO sources. We then use these data to test a model that embeds the Mincerian approach to human capital into the Mankiw, Romer and Weil...

The paper attempts to explain why single factor explanations of the poverty of nations are usually found to be unsatisfactory. Poor countries outside Africa, for instance, have an income per head which stands at about one third of the rich countries’ income per head. Yet each of the three...

This paper studies the puzzling lack of correlation between income and schooling in macro regressions. It is argued that the root of the puzzle is threefold. First, there is a problem of a proper definition of the way in which years of schooling should enter into a production function. Second,...

Are capital inflows associated with faster income growth? There are a large number of empirical studies that identify the most relevant determinants of a country’s growth rate. However, this literature has not explored the growth impact of the various types of capital inflows. The present...

The present level of ODA falls short of the amount needed to finance the <I>Millennium Development Goals</I> (MDGs). The figure of additional $50 billion per year, roughly the present total of ODA spent by DAC donors, is often quoted (e.g. by the Zedillo Report); it results from the sum of the fight...</i>

Suppose a DAC donor earmarks $1 billion of taxpayers’ money for official development assistance (ODA). The donor may use two instruments as an outright grant or in combination with a market loan to produce a concessional loan of $2 billion with a percentage grant element of 50 per cent. Many...