Each year billions of dollars are spent on social programmes in the developing world, but very few benefit from studies that could determine whether or not they actually made a difference. This absence of evidence is an urgent problem. In 2004 the CGD convened the Evaluation Gap Working Group to investigate why rigorous impact evaluations of social development programmes are relatively rare. This final report of the working group contains specific recommendations for stimulating more and better impact evaluations.
Report of the Evaluation Gap Working Group.