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Competition and Ideological Diversity
Matthew Gentzkow
Jesse M. Shapiro
Michael Sinkinson
其他書名
Historical Evidence from US Newspapers
出版
National Bureau of Economic Research
, 2012
URL
http://books.google.com.hk/books?id=r4czMwEACAAJ&hl=&source=gbs_api
註釋
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 newspapers whose political content agrees with their own ideology, that newspapers with the same political content are closer substitutes than newspapers with different political content, 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 affiliation choice that captures these forces. We show that competitive incentives greatly enhance the extent of ideological diversity in local news markets, and we evaluate the impact of policies designed to increase such diversity -- National Bureau of Economic Research web site.
