We study the long-term determinants of the high rates of HIV infection in sub-Saharan Africa, particularly among women, with a focus on family structure and sexual behavior as shaped by the demographic shock following the transatlantic slave trade. First we show that, in clusters where polygyny...

Do populations grow as countries become richer? In this paper we estimate the effects on population growth of shocks to national income that are plausibly exogenous and unlikely to be driven by technological change. For a panel of over 139 countries spanning the period 1960-2007 we interact...

This paper studies the interplay between left-handedness and economic development. To explain the decline and subsequent recovery of left-handedness observed over the last few centuries in the Western world, we propose a theory in which economic development influences the prevalence of...

We revisit the effect of long run income growth on population fertility in some of the poorest countries in the world. Causal inference is enabled through proxying income windfalls by oil price shocks in oil rich versus oil poor provinces. Using various fertility measures as outcomes, we find...

We review the foundations of the economic development-contraception nexus, focusing on the pathways through which economic factors drive contraceptive adoption and change. We investigate the channels through which the relationship between economic development and contraceptive dynamics are...

Or Paradox Regained? The answer is Paradox Regained. New data confirm that for countries worldwide long-term trends in happiness and real GDP per capita are not significantly positively related. The principal reason that Paradox critics reach a different conclusion, aside from problems of data...

In a polarised and highly unequal country such as South Africa, it is unlikely that a definition of the middle class that is based on an income threshold will adequately capture the political and social meanings of being middle class. We therefore propose a multi-dimensional definition, rooted...

This paper critiques the last decade of research on the effects of high-skill emigration from developing countries, and proposes six new directions for fruitful research. The study singles out a core assumption underlying much of the recent literature, calling it the Lump of Learning model of...

Empirical research on the determinants of international migration including the LDCs has so far neglected one important issue: the complex relationship of development and migration. Since the beginning of the 1990s several arguments have been discussed which hint at the possibility that progress...

Preferences - concerning time, risk and social interactions - systematically shape human behavior, and contribute to differential economic and social outcomes between the genders. Here, we present a global investigation of gender differences in six fundamental preferences. Our data consist of...