Nina Lilja is Director of International Agricultural Programs in the College of Agriculture K-State Research and Extension, Kansas State University. At the time of acting as Guest Editor of the double issue on which this book is based, she was Impact Assessment Economist at the CGIAR Systemwide Program on Participatory Research and Gender Analysis for Technology Development and Institutional Innovation (PRGA Program) in Colombia.

John Dixon is Senior Advisor for the Cropping Systems and Economics (CSE) program and Regional Coordinator, South Asia, at the Australian Centre for International Agricultural Research (ACIAR). At the time of acting as Guest Editor, he was Director of Impacts Targeting and Assessment at the International Wheat and Maize Improvement Center (CIMMYT) in Mexico.

Deborah Eade is Editor-in-Chief of Development in Practice, Oxfam GB, France.