As the Principal Investigator (PI), Diana Cassady has overall responsibility for TCEC’s evaluation technical assistance activities and research agenda. Committed to using technology to improve efficiency and learning, she initiated TCEC’s mobile device program for data collection and co-created an online, interactive training module for data collectors. Her research on tobacco control policy in California has been published in Preventing Chronic Disease and Tobacco. She also conducts research on food deserts and food advertising, has evaluated programs in nutrition education in schools and community settings, and teaches in the MPH program at UC Davis. Diana is a professor in the Department of Public Health Sciences at UC Davis, with a master’s degree in communication from Stanford University and a doctoral degree in health education from the School of Public Health at UC Berkeley.