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Competition and Ideological Diversity: Historical Evidence from US Newspapers

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  • Matthew Gentzkow
  • Jesse M. Shapiro
  • Michael Sinkinson

Abstract

We study the competitive forces which shaped ideological diversity in the US press in the early twentieth century. We find that households preferred like-minded news and that newspapers used their political orientation to differentiate from competitors. We formulate a model of newspaper demand, entry, and political affiliation choice in which newspapers compete for both readers and advertisers. We use a combination of estimation and calibration to identify the model's parameters from novel data on newspaper circulation, costs, and revenues. The estimated model implies that competition enhances ideological diversity, that the market undersupplies diversity, and that optimal competition policy requires accounting for the two-sidedness of the news market.

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  • Matthew Gentzkow & Jesse M. Shapiro & Michael Sinkinson, 2014. "Competition and Ideological Diversity: Historical Evidence from US Newspapers," American Economic Review, American Economic Association, vol. 104(10), pages 3073-3114, October.
    • Handle: RePEc:aea:aecrev:v:104:y:2014:i:10:p:3073-3114
    Note: DOI: 10.1257/aer.104.10.3073
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    1. repec:ucp:bkecon:9780226199993 is not listed on IDEAS
    2. Aguirregabiria, Victor & Nevo, Aviv, 2010. "Recent developments in empirical IO: dynamic demand and dynamic games," MPRA Paper 27814, University Library of Munich, Germany.
    3. Daniel A. Ackerberg & Marc Rysman, 2005. "Unobserved Product Differentiation in Discrete-Choice Models: Estimating Price Elasticities and Welfare Effects," RAND Journal of Economics, The RAND Corporation, vol. 36(4), pages 771-788, Winter.
    4. Kaiser, Ulrich & Wright, Julian, 2006. "Price structure in two-sided markets: Evidence from the magazine industry," International Journal of Industrial Organization, Elsevier, vol. 24(1), pages 1-28, January.
    5. Petrova, Maria, 2011. "Newspapers and Parties: How Advertising Revenues Created an Independent Press," American Political Science Review, Cambridge University Press, vol. 105(4), pages 790-808, November.
    6. Reiss, Peter C & Spiller, Pablo T, 1989. "Competition and Entry in Small Airline Markets," Journal of Law and Economics, University of Chicago Press, vol. 32(2), pages 179-202, October.
    7. Marco Antonielli & Lapo Filistrucchi, 2011. "Collusion and the political differentiation of newspapers," Working Papers 11-26, NET Institute, revised Nov 2011.
    8. Elena Argentesi & Lapo Filistrucchi, 2007. "Estimating market power in a two-sided market: The case of newspapers," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(7), pages 1247-1266.
    9. Borenstein, Severin & Netz, Janet, 1999. "Why do all the flights leave at 8 am?: Competition and departure-time differentiation in airline markets," International Journal of Industrial Organization, Elsevier, vol. 17(5), pages 611-640, July.
    10. Michael J. Mazzeo, 2002. "Product Choice and Oligopoly Market Structure," RAND Journal of Economics, The RAND Corporation, vol. 33(2), pages 221-242, Summer.
    11. Joseph G. Altonji & Todd E. Elder & Christopher R. Taber, 2005. "Selection on Observed and Unobserved Variables: Assessing the Effectiveness of Catholic Schools," Journal of Political Economy, University of Chicago Press, vol. 113(1), pages 151-184, February.
    12. Matthew Gentzkow & Jesse M. Shapiro & Michael Sinkinson, 2011. "The Effect of Newspaper Entry and Exit on Electoral Politics," American Economic Review, American Economic Association, vol. 101(7), pages 2980-3018, December.
    13. Fuchs, Victor R. (ed.), 1996. "Individual and Social Responsibility," National Bureau of Economic Research Books, University of Chicago Press, edition 1, number 9780226267869.
    14. Simon P. Anderson & Oystein Foros & Hans Jarle Kind, 2010. "Hotelling Competition with Multi-Purchasing: Time Magazine, Newsweek, or both?," CESifo Working Paper Series 3096, CESifo.
    15. Hans Jarle Kind & Guttorm Schjelderup & Frank Stähler, 2013. "Newspaper Differentiation and Investments in Journalism: The Role of Tax Policy," Economica, London School of Economics and Political Science, vol. 80(317), pages 131-148, January.
    16. Ying Fan, 2013. "Ownership Consolidation and Product Characteristics: A Study of the US Daily Newspaper Market," American Economic Review, American Economic Association, vol. 103(5), pages 1598-1628, August.
    17. Jean‐Charles Rochet & Jean Tirole, 2006. "Two‐sided markets: a progress report," RAND Journal of Economics, RAND Corporation, vol. 37(3), pages 645-667, September.
    18. Heiss, Florian & Winschel, Viktor, 2008. "Likelihood approximation by numerical integration on sparse grids," Journal of Econometrics, Elsevier, vol. 144(1), pages 62-80, May.
    19. Marco Antonielli & Lapo Filistrucchi, 2011. "Collusion and the political differentiation of newspapers," Working Papers 11-26, NET Institute, revised Nov 2011.
    20. Steven Berry & Alon Eizenberg & Joel Waldfogel, 2016. "Optimal product variety in radio markets," RAND Journal of Economics, RAND Corporation, vol. 47(3), pages 463-497, August.
    21. Acemoglu,Daron & Arellano,Manuel & Dekel,Eddie (ed.), 2013. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9781107016064, October.
    22. Qihong Liu & Jie Shuai, 2019. "Multi-Dimensional Product Differentiation," Frontiers of Economics in China-Selected Publications from Chinese Universities, Higher Education Press, vol. 14(4), pages 497-535, December.
    23. Matthew Gentzkow & Edward L. Glaeser & Claudia Goldin, 2006. "The Rise of the Fourth Estate. How Newspapers Became Informative and Why It Mattered," NBER Chapters, in: Corruption and Reform: Lessons from America's Economic History, pages 187-230, National Bureau of Economic Research, Inc.
    24. Chun-Fang Chiang & Brian Knight, 2011. "Media Bias and Influence: Evidence from Newspaper Endorsements," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 78(3), pages 795-820.
    25. Eldersveld, Samuel J., 1952. "The Independent Vote: Measurement, Characteristics, and Implications for Party Strategy," American Political Science Review, Cambridge University Press, vol. 46(3), pages 732-753, September.
    26. Acemoglu,Daron & Arellano,Manuel & Dekel,Eddie (ed.), 2013. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9781107627314, October.
    27. Liran Einav & Amy Finkelstein & Mark R. Cullen, 2010. "Estimating Welfare in Insurance Markets Using Variation in Prices," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 125(3), pages 877-921.
    28. Steven Berry & Joel Waldfogel, 2010. "Product Quality And Market Size," Journal of Industrial Economics, Wiley Blackwell, vol. 58(1), pages 1-31, March.
    29. Murphy, Kevin M & Topel, Robert H, 2002. "Estimation and Inference in Two-Step Econometric Models," Journal of Business & Economic Statistics, American Statistical Association, vol. 20(1), pages 88-97, January.
    30. Nathalie Sonnac, 2000. "Readers' Attitudes Toward Press Advertising: Are They Ad-Lovers or Ad-Averse?," Journal of Media Economics, Taylor & Francis Journals, vol. 13(4), pages 249-259.
    31. Steven T. Berry & Joel Waldfogel, 1999. "Free Entry and Social Inefficiency in Radio Broadcasting," RAND Journal of Economics, The RAND Corporation, vol. 30(3), pages 397-420, Autumn.
    32. Irmen, Andreas & Thisse, Jacques-Francois, 1998. "Competition in Multi-characteristics Spaces: Hotelling Was Almost Right," Journal of Economic Theory, Elsevier, vol. 78(1), pages 76-102, January.
    33. Michaela Draganska & Michael Mazzeo & Katja Seim, 2009. "Beyond plain vanilla: Modeling joint product assortment and pricing decisions," Quantitative Marketing and Economics (QME), Springer, vol. 7(2), pages 105-146, June.
    34. Acemoglu,Daron & Arellano,Manuel & Dekel,Eddie (ed.), 2013. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9781107016040, October.
    35. Berry, Steven & Levinsohn, James & Pakes, Ariel, 1995. "Automobile Prices in Market Equilibrium," Econometrica, Econometric Society, vol. 63(4), pages 841-890, July.
    36. Dixit, Avinash K & Stiglitz, Joseph E, 1977. "Monopolistic Competition and Optimum Product Diversity," American Economic Review, American Economic Association, vol. 67(3), pages 297-308, June.
    37. N. Gregory Mankiw & Michael D. Whinston, 1986. "Free Entry and Social Inefficiency," RAND Journal of Economics, The RAND Corporation, vol. 17(1), pages 48-58, Spring.
    38. Bresnahan, Timothy F & Reiss, Peter C, 1991. "Entry and Competition in Concentrated Markets," Journal of Political Economy, University of Chicago Press, vol. 99(5), pages 977-1009, October.
    39. Anderson, Simon P. & Foros, Øystein & Kind, Hans Jarle, 2010. "Hotelling competition with multi-purchasing," Discussion Papers 2010/16, Norwegian School of Economics, Department of Business and Management Science.
    40. Edward L. Glaeser & Claudia Goldin, 2006. "Corruption and Reform: Lessons from America's Economic History," NBER Books, National Bureau of Economic Research, Inc, number glae06-1.
    41. Acemoglu,Daron & Arellano,Manuel & Dekel,Eddie (ed.), 2013. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9781107638105, October.
    42. Victor R. Fuchs, 1996. "Individual and Social Responsibility: Child Care, Education, Medical Care, and Long-Term Care in America," NBER Books, National Bureau of Economic Research, Inc, number fuch96-1.
    43. Bajari, Patrick & Hortacsu, Ali, 2003. "The Winner's Curse, Reserve Prices, and Endogenous Entry: Empirical Insights from eBay Auctions," RAND Journal of Economics, The RAND Corporation, vol. 34(2), pages 329-355, Summer.
    44. Kenneth C. Wilbur, 2008. "A Two-Sided, Empirical Model of Television Advertising and Viewing Markets," Marketing Science, INFORMS, vol. 27(3), pages 356-378, 05-06.
    45. Ambarish Chandra, 2009. "Targeted Advertising: The Role Of Subscriber Characteristics In Media Markets," Journal of Industrial Economics, Wiley Blackwell, vol. 57(1), pages 58-84, March.
    46. Dewenter, Ralf & Haucap, Justus & Wenzel, Tobias, 2011. "Semi-collusion in media markets," International Review of Law and Economics, Elsevier, vol. 31(2), pages 92-98, June.
    47. Matthew Gentzkow & Jesse M. Shapiro, 2010. "What Drives Media Slant? Evidence From U.S. Daily Newspapers," Econometrica, Econometric Society, vol. 78(1), pages 35-71, January.
    48. Acemoglu,Daron & Arellano,Manuel & Dekel,Eddie (ed.), 2013. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9781107016057, October.
    49. Edward L. Glaeser & Bryce A. Ward, 2006. "Myths and Realities of American Political Geography," Journal of Economic Perspectives, American Economic Association, vol. 20(2), pages 119-144, Spring.
    50. Brock, William A. & Durlauf, Steven N., 2007. "Identification of binary choice models with social interactions," Journal of Econometrics, Elsevier, vol. 140(1), pages 52-75, September.
    51. Ambarish Chandra & Allan Collard‐Wexler, 2009. "Mergers in Two‐Sided Markets: An Application to the Canadian Newspaper Industry," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 18(4), pages 1045-1070, December.
    52. Marc Rysman, 2004. "Competition Between Networks: A Study of the Market for Yellow Pages," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 71(2), pages 483-512.
    53. Ambrus, Attila & Reisinger, Markus, 2006. "Exclusive vs Overlapping Viewers in Media Markets," Discussion Papers in Economics 1178, University of Munich, Department of Economics.
    54. Anthony Downs, 1957. "An Economic Theory of Political Action in a Democracy," Journal of Political Economy, University of Chicago Press, vol. 65(2), pages 135-135.
    55. Simon P. Anderson & John McLaren, 2012. "Media Mergers And Media Bias With Rational Consumers," Journal of the European Economic Association, European Economic Association, vol. 10(4), pages 831-859, August.
    56. Levin, Dan & Smith, James L, 1994. "Equilibrium in Auctions with Entry," American Economic Review, American Economic Association, vol. 84(3), pages 585-599, June.
    57. Acemoglu,Daron & Arellano,Manuel & Dekel,Eddie (ed.), 2013. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9781107674165, October.
    58. Burnham, Walter Dean, 1965. "The Changing Shape of the American Political Universe," American Political Science Review, Cambridge University Press, vol. 59(1), pages 7-28, March.
    59. Sendhil Mullainathan & Andrei Shleifer, 2005. "The Market for News," American Economic Review, American Economic Association, vol. 95(4), pages 1031-1053, September.
    60. Peter Arcidiacono & Robert A. Miller, 2011. "Conditional Choice Probability Estimation of Dynamic Discrete Choice Models With Unobserved Heterogeneity," Econometrica, Econometric Society, vol. 79(6), pages 1823-1867, November.
    61. Ambrus, Attila & Reisinger, Markus, 2006. "Exclusive vs Overlapping Viewers in Media Markets," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 161, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
    62. A. Michael Spence, 1975. "Monopoly, Quality, and Regulation," Bell Journal of Economics, The RAND Corporation, vol. 6(2), pages 417-429, Autumn.
    63. Matthew Gentzkow & Nathan Petek & Jesse M. Shapiro & Michael Sinkinson, 2015. "Do Newspapers Serve The State? Incumbent Party Influence On The Us Press, 1869–1928," Journal of the European Economic Association, European Economic Association, vol. 13(1), pages 29-61, February.
    64. James M. Poterba, 1996. "Government Intervention in the Markets for Education and Health Care: How and Why?," NBER Chapters, in: Individual and Social Responsibility: Child Care, Education, Medical Care, and Long-Term Care in America, pages 277-308, National Bureau of Economic Research, Inc.
    65. Kenneth L. Judd & Ben Skrainka, 2011. "High performance quadrature rules: how numerical integration affects a popular model of product differentiation," CeMMAP working papers CWP03/11, Centre for Microdata Methods and Practice, Institute for Fiscal Studies.
    66. Jean-Charles Rochet Author-Email:rochet@cict.fr Author-Workplace-Name: IDEI, University of Toulouse & Jean Tirole Author-Email: tirole@cict.fr Author-Workplace-Name: IDEI, University of Toulouse, 2006. "Two-Sided Markets: A Progress Report," RAND Journal of Economics, The RAND Corporation, vol. 37(3), pages 645-667, Autumn.
    67. Lisa George & Joel Waldfogel, 2003. "Who Affects Whom in Daily Newspaper Markets?," Journal of Political Economy, University of Chicago Press, vol. 111(4), pages 765-784, August.
    68. Peter O. Steiner, 1952. "Program Patterns and Preferences, and the Workability of Competition in Radio Broadcasting," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 66(2), pages 194-223.
    69. Matthew Gentzkow, 2007. "Valuing New Goods in a Model with Complementarity: Online Newspapers," American Economic Review, American Economic Association, vol. 97(3), pages 713-744, June.
    70. Sendhil Mullainathan & Andrei Shleifer, 2005. "The Market for News," American Economic Review, American Economic Association, vol. 95(4), pages 1031-1053, September.
    71. Kaiser, Ulrich & Song, Minjae, 2009. "Do media consumers really dislike advertising? An empirical assessment of the role of advertising in print media markets," International Journal of Industrial Organization, Elsevier, vol. 27(2), pages 292-301, March.
    72. Liran Einav, 2007. "Seasonality in the U.S. motion picture industry," RAND Journal of Economics, RAND Corporation, vol. 38(1), pages 127-145, March.
    73. Andrew Sweeting, 2010. "The effects of mergers on product positioning: evidence from the music radio industry," RAND Journal of Economics, RAND Corporation, vol. 41(2), pages 372-397, June.
    74. Dora L. Costa, 2001. "Estimating Real Income in the United States from 1888 to 1994: Correcting CPI Bias Using Engel Curves," Journal of Political Economy, University of Chicago Press, vol. 109(6), pages 1288-1310, December.
    75. Katja Seim & Joel Waldfogel, 2013. "Public Monopoly and Economic Efficiency: Evidence from the Pennsylvania Liquor Control Board's Entry Decisions," American Economic Review, American Economic Association, vol. 103(2), pages 831-862, April.
    76. Strömberg, David & Prat, Andrea, 2011. "The Political Economy of Mass Media," CEPR Discussion Papers 8246, C.E.P.R. Discussion Papers.
    77. Rusk, Jerrold G., 1970. "The Effect of the Australian Ballot Reform on Split Ticket Voting: 1876–1908," American Political Science Review, Cambridge University Press, vol. 64(4), pages 1220-1238, December.
    78. Dertouzos, James N & Trautman, William B, 1990. "Economic Effects of Media Concentration: Estimates from a Model of the Newspaper Firm," Journal of Industrial Economics, Wiley Blackwell, vol. 39(1), pages 1-14, September.
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    More about this item

    JEL classification:

    • D72 - Microeconomics - - Analysis of Collective Decision-Making - - - Political Processes: Rent-seeking, Lobbying, Elections, Legislatures, and Voting Behavior
    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
    • L82 - Industrial Organization - - Industry Studies: Services - - - Entertainment; Media
    • N42 - Economic History - - Government, War, Law, International Relations, and Regulation - - - U.S.; Canada: 1913-
    • N72 - Economic History - - Economic History: Transport, International and Domestic Trade, Energy, and Other Services - - - U.S.; Canada: 1913-

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