This paper explores the implications of Unified Growth Theory for the origins of existing differences in income per capita across countries. The theory sheds light on three fundamental layers of comparative development. It identifies the factors that have governed the pace of the transition from...

This Paper claims that technical progress induces early retirement of older workers. It supports this claim both theoretically and empirically. We present a model where part of human capital is technology-specific, so that technical progress erodes some existing human capital. This affects...

The impact of school resources on the quality of education in developing countries may depend crucially on whether resources are targeted efficiently. In this paper we use a randomized experiment to analyze the impact of a school grants program in Senegal, which decentralized a portion of the...

We study the relationship between geography and growth. To do so, we first develop a dynamic spatial growth theory with realistic geography. We characterize the model and its balanced growth path and propose a methodology to analyze equilibria with different levels of migration frictions. We...

Using the first two waves of the Vietnam Living Standards Survey, we investigate how a father’s temporary absence affects children left behind in terms of their school attendance, household expenditures on education, and nonhousework labor supply in the 1990s. The estimating subsample is...

Medical research indicates that breastfeeding suppresses post-natal fertility. We model the implications for breastfeeding decisions and test the model's predictions using survey data from India. First, we find that breastfeeding increases with birth order, since mothers near or beyond their...

This paper deals with the relationship between decentralisation, regional economic development, and income inequality within regions. Using multiplicative interaction models and regionally aggregated microeconomic data for more than 100,000 individuals in the European Union (EU), it addresses...

Long-run trends in Africa’s well-being are provided on the basis of a new index of human development, alternative to the UNDP’s HDI. A sustained improvement in African human development is found that falls, nonetheless, short of those experienced in other developing regions. Within Africa,...

This paper focuses on the determinants of self-employment among rural to urban migrants in China. Two self-selection mechanisms are analysed: the first relates to the manner in which migrants choose self-employment or paid work based on the potential gains from either type of employment; the...

Two decades ago, 93% of the world’s poor lived in countries officially classified as Low Income (LICs). Now, 72% of the world’s poor live in Middle Income Countries (MICs). The dramatic shift has been brought about by fast growth in a number of countries with large populations. On present...