The fact that Stephan Klasen can always give a precise answer to very complicated or even complex questions inspired the idea for this book. We asked 50 development economists (and friends of Stephan) around the world to answer 50 (serious and not-so serious) questions about development research...

Summary Households in developing countries are frequently hit by severe idiosyncratic and covariate shocks leading to high consumption volatility. A household's currently observed poverty status might therefore not be a good indicator of the household's general vulnerability to poverty. In the...

Using household survey data, this paper estimates the mortality impact of improved water and sanitation access in order to evaluate the potential contribution of water and sanitation investment toward achieving the child mortality targets defined in Millennium Development Goal 4. The authors...