In many countries, economic considerations are an important factor in government decisionmaking on the introduction of genetically modified (GM) products. However, reliable information on their actual or likely economic impact is often lacking. This brief illustrates the use of a methodological framework to assess the potential economic impact of introducing GM varieties of tomato, cabbage, garden egg, and cassava in Ghana. The framework consists of four interrelated levels of analysis, corresponding to four sets of actors in the economy: (1) farm (smallholder producers); (2) market (processors, traders); (3) the pertinent industry or sector of the national economy (consumers and producers, linked by markets); and (4) international trade. List of Briefs: 1. Assessing the potential economic impact of genetically modified crops in Ghana: A methodological framework / Daniela Horna, Melinda Smale, and Jos� Falck-Zepeda. 2. Assessing the potential economic impact of genetically modified crops in Ghana: Virus resistant tomato / Daniela Horna, Melinda Smale, and Jos� Falck-Zepeda. 3. Assessing the potential economic impact of genetically modified crops in Ghana: Insect-resistant cabbage / Daniela Horna, Melinda Smale, and Jos� Falck-Zepeda. 4. Assessing the potential economic impact of genetically modified crops in Ghana: Insect-resistant garden egg / Daniela Horna, Melinda Smale, and Jos� Falck-Zepeda. 5. Assessing the potential economic impact of genetically modified crops in Ghana: Virus-resistant cassava / Daniela Horna, Melinda Smale, and Jos� Falck-Zepeda.