The recent wave of randomized trials in development economics has provoked criticisms regarding external validity.  We investigate two concerns - heterogeneity across beneficiaries and implementers - in a randomized trial of contract teachers in Kenyan schools.  The intervention, previously...

This paper seeks to measure and explain changes in incomes, inequality, and poverty in Kenya. It starts from a very long-term perspective covering the last century, but then focuses on a more detailed analysis of the recent period for which data from hous

Over coming decades, changes in population age structure will have profound implications for the macroeconomy, influencing economic growth, generational equity, human capital, saving and investment, and the sustainability of public and private transfer systems. How the future unfolds will depend...

The paper investigates birth weight and its correlates in Kenya using nationally representative data collected by the government in the early 1990s. I find that immunization of the mother against tetanus during pregnancy is strongly associated with improvements in birth weight. Other factors...

In 2003 Kenya abolished user fees in all government primary schools. We find that this Free Primary Education (FPE) policy resulted in a decline in public school quality and increased demand for private schooling. However, the former did not reflect a decline in value added by public schools -...

The recent wave of randomized trials in development economics has provoked criticisms regarding external validity. We investigate two concerns – heterogeneity across beneficiaries and implementers – in a randomized trial of contract teachers in Kenyan schools. The intervention, previously...

Provision of mortuary services free of charge in a government hospital in rural Kenya is found to have led to a black market trade in these services. The principal participants in the market were the mortuary attendants and bereaved families. A method is developed for determining black market...