Dr. Centola is a Professor of Communication and Engineering at the University of Pennsylvania. As an expert in complex systems and social dynamics, specifically network analysis, computational modeling, and Web-based experiments, he is qualified to lead this work. In particular, he has pioneered the development of an experimental online method for evaluating the effects of network structures on the spread of health behaviors and the dynamics of behavior change. He helped to develop the agentbased modeling tool “NetLogo,” and he invented the theory of complex contagions, which has resulted in a patented technology, currently used in several industry and health policy applications, that applies online social network technologies to improve population health. He has directed multi-site research projects funded by the NIH, NSF, RWJF, and the Hewlett Foundation. The findings from these studies have been published in top scientific journals, including Science, Nature and the Proceedings of the National Academy of Sciences.