Graham Thiele, PhD, Director, CGIAR Research Program on Roots, Tubers, and Bananas (RTB). Graham is a social scientist and expert in targeting, priority setting, and impact and adoption studies of new agricultural technologies. He spent 17 years with the International Potato Center (CIP), most recently as the Leader for Social and Health Sciences. 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.