David Reiley is pioneer in the use of field experiments in economics and social sciences. He is currently research scientist at Google and previously worked as principal research scientist at Yahoo! Research where he worked on experiments to measure the effects of online advertising. He was also a professor of economics at the University of Arizona, taught in the department of Economics at Vanderbilt University, and in the department of Management and Strategy at Northwestern University. Reiley holds an AB in Astrophysical Sciences from Princeton University and a PhD in Economics from Massachusetts Institute of Technology.