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Many conferences, publications, reports and workshops have focused on the dramatic commodity price increases from 2007 to mid-2008. These contributions have tried to identify the known and new factors driving agricultural commodity price changes such as the interdependence between energy and agricultural markets, the consequences of the development of biofuels, the linkage between the depreciation of the US dollar and agricultural commodity prices, the role of financial markets, and to discuss policy responses.This book provides an overview of methodologies that can be implemented for improving the analysis and forecast of market developments. It discusses how current modelling tools used for policy analyses can be enhanced in order to integrate price dynamics. Finally it also highlights challenges faced by policy makers when dealing with the changing nature of agricultural commodities markets.We would like to express our gratitude to all those who have contributed to this book either by writing a chapter or by discussing the presentations during the workshop.We also would like to thank Anna Atkinson for her support in the organising of the workshop and the editing of the book. Seville, SpainIsabelle Piot-Lepetit Robert M'barek vii