The independence of editorial content from advertisers' influence is a cornerstone of journalistic ethics. We test whether this independence is observed in practice. We find that mutual fund recommendations are correlated with past advertising in three personal finance publications but not in two national newspapers. Our tests control for numerous fund characteristics, total advertising expenditures, and past mentions. While positive mentions significantly increase fund inflows, they do not successfully predict returns. Future returns are similar for the funds we predict would have been mentioned in the absence of bias, suggesting that the cost of advertising bias to readers is small. Copyright (c) President and Fellows of Harvard College and the Massachusetts Institute of Technology..
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Jeffrey Milyo & Tim Groseclose, 2005.
"A Measure of Media Bias,"
Working Papers
0501, Department of Economics, University of Missouri, revised 25 Aug 2005.
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Sendhil Mullainathan & Andrei Shleifer, 2005.
"The Market for News,"
American Economic Review,
American Economic Association, vol. 95(4), pages 1031-1053, September.
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Matthew Ellman & Fabrizio Germano, 2004.
"What Do the Papers Sell?,"
Economics Working Papers
800, Department of Economics and Business, Universitat Pompeu Fabra, revised Feb 2006.
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Ulrike Malmendier & Geoffrey Tate, 2008.
"Superstar CEOs,"
NBER Working Papers
14140, National Bureau of Economic Research, Inc.
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Sendhil Mullainathan & Joshua Schwartzstein & Andrei Shleifer, 2006.
"Coarse Thinking and Persuasion,"
NBER Working Papers
12720, National Bureau of Economic Research, Inc.
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Sendhil Mullainathan & Andrei Shleifer, 2005.
"Persuasion in Finance,"
NBER Working Papers
11838, National Bureau of Economic Research, Inc.
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