Stephen Devereux holds a doctorate in economics from Oxford University and has worked for over 20 years on food security, seasonality, famine and social protection. He is a Research Fellow at the Institute of Development Studies, based at the University of Sussex, UK. Rachel Sabates-Wheeler holds a doctorate in agricultural economics and development from the University of Wisconsin-Madison, USA. She is a Research Fellow at the Institute of Development Studies and is the Director of the Centre for Social Protection, at IDS. Richard Longhurst holds a doctorate in development economics from the University of Sussex. He has over 30 years experience working on development policy, and is currently a Research Associate at the Institute of Development Studies.