STEPHAN KLASEN is Professor of Economics at the University of Gö ttingen, Germany. He has participated in many research and consultancy projects on poverty, growth and gender inequality issues for the World Bank, DFID, OECD, and other national and international organizations. He is the Managing Editor for "Review of Income and Wealth," the leading international journal on the measurement and interpretation of poverty and inequality issues. MICHAEL GRIMM is Junior Professor of Economics at the University of Gö ttingen, Germany. ANDY MCKAY is Professor of Economics and Internat...