Graham Thiele is Director of the CGIAR Research Program on Roots, Tubers, and Bananas (RTB) led by the International Potato Center (CIP). He has led the RTB program for the last 10 years, making it an example of collaborative research for development in the CGIAR. Graham is a social scientist and expert in targeting, priority setting, and impact and adoption studies of new agricultural technologies. Previously he was the Leader for Social and Health Sciences at CIP. Graham has worked in Bolivia, Ecuador, Peru, Tanzania, Kenya, Benin, Rwanda, Indonesia, and the Philippines. He helped develop, implement, and assess several, novel participatory methodologies designed to link farmers with markets, inform research agendas, and promote innovation in policies, products, and technology uptake. Graham holds a PhD in Social Anthropology and an MSc in Agricultural Economics.