Developing country governments and the development aid community are acutely aware of the need to find more effective ways to improve basic living conditions for the poor, as traditional approaches of delivering public support have not always led to the results intended. "Results-based financing" (RBF) instruments, which tie the disbursement of public funding to the achievement of pre-agreed results, are now recognized as one important piece of the aid delivery puzzle. The aim of these instruments is to enhance the effectiveness of public funding. 'Output-Based Aid: Lessons Learned and Best...