Mark W. Rosegrant
Siet Meijer
Sarah A. Cline

International Food Policy Research Institute
Washington, D.C.

TABLE OF CONTENTS
INTRODUCTION......................................................................................................... 3
THE MODEL................................................................................................................ 5
Basic IMPACT Methodology .................................................................................... 5
IMPACT Technical Methodology.............................................................................. 6
Crop Production .................................................................................................... 6
Livestock Production............................................................................................. 8
Demand Functions ................................................................................................. 9
Prices................................................................................................................... 10
International Linkage: Trade ................................................................................ 12
Algorithm for Solving the Equilibrium Condition.................................................. 13
Determination of Malnutrition.............................................................................. 13
REFERENCES............................................................................................................ 16
APPENDIX 1: BIBLIOGRAPHY.............................................................................. 19
APPENDIX 2: IMPACT COUNTRIES/REGIONS, AND COMMODITIES ............. 23
APPENDIX 3: DEFINITIONS OF IMPACT COUNTRIES AND REGIONS............ 24
Developed Countries and Regions........................................................................ 24
Developing Countries and Regions....................................................................... 24
APPENDIX 4: DEFINITIONS OF IMPACT COMMODITIES ................................. 26
Livestock............................................................................................................. 26
Crops................................................................................................................... 26
APPENDIX 5: SCHEMATIC PRESENTATION OF IMPACT................................... 28

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