Randall A. Lewis

Randall Lewis is a senior economic research scientist in the Knowledge group at Google. In this role, he studies advertising's impact on human behavior and seeks ways to improve the health and efficiency of digital markets. Prior to joining Google in May 2012, Randall worked at Yahoo! Research. Randall attended the Massachusetts Institute of Technology as a Presidential Fellow where he earned his PhD in economics with emphases in econometrics and industrial organization. His dissertation is titled "Measuring the Effects of Online Advertising on Human Behavior Using Natural and Field Experiments." Earlier, he attended Brigham Young University as a Hinckley Presidential Scholar and graduated as a valedictorian with a double major in economics and mathematics.

Previous Publications


    Display advertising impact: search lift and social influence

    Panagiotis Papadimitriou 0002, Hector Garcia-Molina, Prabhakar Krishnamurthy, Randall A. Lewis, David H. Reiley

    KDD (2011), pp. 1019-1027


    Here, there, and everywhere: correlated online behaviors can lead to overestimates of the effects of advertising

    Randall A. Lewis, Justin M. Rao, David H. Reiley

    WWW (2011), pp. 157-166


    Northern exposure: a field experiment measuring externalities between search advertisements

    David H. Reiley, Sai-Ming Li, Randall A. Lewis

    ACM Conference on Electronic Commerce (2010), pp. 297-304