Pages 4-20 in Michael P. Collinson and Kerri Wright Platais (eds.), Social science in the CGIAR. CGIAR Study Paper No. 28, The World Bank, Washington, D.C. Proceedings of a meeting of CGIAR social scientists held at the International Service for Nationa, "The Consultative Group on International Agricultural Research (CGIAR) is an informal association of 40 public and private sector donors that supports a network of 18 international agricultural research centers."