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I am a Professor of Economics at the University of Warwick and Research Fellow at the Centre for Economic Policy Research (CEPR). I hold a BS in Economics from the University of Pennsylvania (1991) and a PhD in Economics from Stanford University (1998). Prior to joining the faculty at Warwick, I held academic positions at Duke University and the University of Arizona. In 2007-2008, I was the Chief Economist at the Federal Communication Commission (FCC), the United States media and communications regulator.

I am an empirical economist specializing in the fields of industrial organization, econometrics, and media economics. Much of my work focuses on "evidence-based policymaking": using data on consumer and firm behaviour to understand the mechanisms generating market outcomes in product (esp. media) markets in order to best design public policies in those markets. I am also interested in empirical models of information, learning, and search, endogenous product characteristics and optimal product choice, and the economic effects of advertising.


  • Industrial Organization
  • Econometrics
  • Media Economics


Curriculum Vitae




Current Working Papers

Work in Progress





Current Work In Progress (See here for more details).

  • "Robust Instrumental Variables," (with Dan Ackerberg), March 2007.


  • "An Empirical Analysis of Manufacturer-Retailer Interaction: What Determines Wholesale Prices?" (with Zsolt Mackasi), May 2006.


  • "Storability, Competition, and Sales: Do Firms Cut Prices to Steal Demand from Rivals or Themselves?,'' (with James J. Anton), April 2005.


  • "A Dynamic Model of Quality Competition in Subscription Television Markets,'' (with Alex Shcherbakov), March 2007.


  • "The Impact of Ratings and Word-of-Mouth on DVD Rentals: An Analysis of the Netflix Data," (with Ivan Maryanchyk), February 2007.