Motivating Experts to Contribute to Digital Public Goods: A Personalized Field Experiment on Wikipedia

The authors are grateful for helpful comments from George Akerlof, Tim Besley, Raj Chetty, David Cooper, Matt Van Essen, Andrei Gomberg, Uri Gneezy, Aaron Halfaker, Marit Hinnosaar, Nancy Kotzian, Rachel Kranton, Aya Betensky, John List, Shane Murphy, Muriel Niederle, Axel Ockenfels, Paul Resnick, Tanya Rosenblat, Alvin Roth, Sally Sadoff, Karl Schlag, Charles Sprenger, Jean-Robert Tyran, Roberto Weber, David Yang, Michael Zhang, the associate editor, three anonymous referees, and seminar participants at Carlos III, Centro de Estudios Monetarios y Financieros, the Chinese University of Hong Kong, Centro de Investigación y Docencia Económicas, Cologne, Facebook Core Data Science, Instituto Tecnológico Autónomo de México, Lyon, Magdeburg, Michigan, Michigan State, Monash, Stanford, Tel Aviv, Vienna, Windsor, the Wikimedia Foundation, Zürich, the 2017 Economic Science Association World Meeting (San Diego, CA), 2018 ASSA Meeting (Philadelphia, PA), the 2nd Economic Research on Identity Norms and Narratives Conference (Oxford, UK), and the 20019 Advances in Field Experiment Conference (Chicago, IL). The authors thank Paul Hur and Lucy Jiang for excellent research assistance. This research was not funded by the Wikimedia Foundation.