Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

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Thursday, February 7, 2013

Competition and Ideological Diversity: Historical Evidence from US Newspapers

Posted by D. Daniel Sokol

Matthew Gentzkow, University of Chicago - Booth School of Business, National Bureau of Economic Research (NBER), Jesse M. Shapiro, University of Chicago, National Bureau of Economic Research (NBER) and Michael Sinkinson, University of Pennsylvania - Business & Public Policy Department explore Competition and Ideological Diversity: Historical Evidence from US Newspapers.

ABSTRACT: We use data on US newspapers from the early 20th century to study the economic incentives that shape ideological diversity in the media. We show that households prefer like-minded news, and that newspapers seek both to cater to household tastes and to differentiate from their competitors. We estimate a model of newspaper demand, entry and political affiliation choice in which newspapers compete for both readers and advertisers. We find that economic competition enhances ideological diversity, that the market undersupplies diversity, and that incorporating the two-sidedness of the news market is critical to evaluating the effect of public policy.

http://lawprofessors.typepad.com/antitrustprof_blog/2013/02/competition-and-ideological-diversity-historical-evidence-from-us-newspapers.html

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