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dc.contributor.authorCampante, Filipe Robin
dc.contributor.authorHojman, Daniel Andres
dc.date.accessioned2010-09-29T21:12:12Z
dc.date.issued2010
dc.identifier.citationCampante, Filipe R., and Daniel Hojman. 2010. Media and Polarization. HKS Faculty Research Working Paper Series, RWP10-002, John F. Kennedy School of Government, Harvard University.en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4454154
dc.description.abstractThis paper provides a model of how media environments affect political polarization. We first develop a model of how media environments, characterized by their levels of accessibility and variety of content, interact with citizens' ideological views and attitudes and political motivation. We then embed it in a model of majoritarian electoral competition in which politicians react to those media-influenced views. We show how equilibrium polarization is affected by changes in the media environment, through two channels: the variety effect, whereby a decrease in media variety leads to convergence in citizens' views and hence to lower polarization; and the composition effect, whereby a lowering of barriers to media accessibility increases turnout and hence lowers polarization, since newly motivated voters are relatively more moderate. We take the model's predictions to the data, in the US context of the introduction of broadcast TV, in the 1940s and 1950s, and radio, in the 1920s and 1930s. We show that, consistent with the model's predictions, TV decreased polarization, and exposure to (network) radio was correlated with lower polarization. The evidence suggests that the variety effect was more important than the composition effect.en_US
dc.language.isoen_USen_US
dc.publisherJohn F. Kennedy School of Government, Harvard Universityen_US
dc.relation.isversionofhttp://web.hks.harvard.edu/publications/workingpapers/citation.aspx?PubId=6992en_US
dash.licenseLAA
dc.titleMedia and Polarizationen_US
dc.typeResearch Paper or Reporten_US
dc.description.versionAuthor's Originalen_US
dc.relation.journalHKS Faculty Research Working Paper Seriesen_US
dash.depositing.authorCampante, Filipe Robin
dc.date.available2010-09-29T21:12:12Z
dash.contributor.affiliatedHojman, Daniel Andres
dash.contributor.affiliatedCampante, Filipe


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