I lead the Interaction Science team, which is part of the Computational Social Science and Core Data Science group. We study people’s interactions on and with Facebook products and what effect those products have on them, their relationships, and their community. We leverage this understanding to design new and better products and guide the larger product teams. Our research includes topics such as technology and well-being, crisis informatics, data for social good, information diffusion, and the structure of online prosocial and antisocial behavior. I received my PhD in computer science from UCLA, where I did research in artificial intelligence and heuristic search algorithms.