MARCO V. SÁNCHEZ is economic affairs officer at the Department of Economic and Social Affairs of the United Nations (UN/DESA), New York, and was previously associated with the Sub-Regional Office in Mexico City of the UN Economic Commission for Latin America and the Caribbean   ROB VOS is director of the Development Policy and Analysis Division at the Department of Economic and Social Affairs of the United Nations (UN/DESA), New York, and Professor of Finance and Development at the Institute of Social Studies, The Hague    ENRIQUE GANUZA is resident representative of the United Nations in Santiago de Chile and was chief economist for Latin America and the Caribbean of the United Nations Development Program (UNDP) at the initiation of the project leading to the present publication   HANS LOFGREN is senior economist of the Development Economics Prospects Group (DECPG) of the World Bank. Prior to joining the Bank he was senior research fellow at the International Food Policy Research Institute (IFPRI)   CAROLINA DÍAZ-BONILLA is economist in the Poverty and Gender Unit of the Latin America and Caribbean Region (LCSPP) of the World Bank. During most of the project's duration, she was an economist in the Development Economics Prospects Group (DECPG) of the World Bank.