What should the World Bank optimally do with the US$10 to $20 billion it can loan each year? Has it, in fact, done what is optimal? This study suggests a simple framework within which to measure the World Bank against an optimal international public financier for development. It goes on to argue that a careful treatment of the empirical evidence on Bank lending strongly contradicts optimal behavior under different assumptions. The evidence, in fact, rejects any notion that the Bank has substituted for private capital or that it has successfully catalyzed private development finance.
Do Rich Countries Invest Less in Poor Countries than the Poor Countries Themselves? - Working Paper 19
Global private capital flows have barely touched the poorest nations; the rich invest mostly with the rich. It is possible that failures in the global capital market prevent capital from exploiting high returns in poor countries; it is also possible that fundamental returns to investment are lower in poor countries. In this paper, a novel empirical framework uses standard data to conclude that 85% of wealth bias, whether caused by market failure or not, is domestic in origin. That is, poor country lenders are deterred from investing in poor countries to nearly the same degree that rich-country lenders are.