My work focuses on understanding the operation of domestic and international food systems, analyzing how well they work, and evaluating how government policy affects their operation and performance. My particular interest is in the economics of food quality, especially the quality attributes of safety and nutrition. How are markets for food safety and nutrition developing given increased consumer demand for safer, more nutritious products; manufacturers and retailers' efforts to meet this demand; and increased regulatory activity by national governments to assure food quality? I am also interested in the economics of certification, traceability, and labeling for quality attributes. Examples of my work include how to prioritize the importance of different foodborne risks, whether regulatory programs such as Hazard Analysis at Critical Control Points (HACCP) will enhance food safety at a reasonable cost, how benefit and risk information can be balanced and effectively communicated to consumers, and how international trade agreements influence food quality.