Social Media Influence Mainstream Media: Evidence from Two Billion Tweets

116 Pages Posted: 5 Sep 2020 Last revised: 10 Jul 2022

See all articles by Julia Cage

Julia Cage

Sciences Po Paris Department of Economics; Centre for Economic Policy Research (CEPR)

Nicolas Herve

Institut National de l'Audiovisuel (Ina)

Beatrice Mazoyer

University of Paris-Saclay - CentraleSupélec

Multiple version iconThere are 2 versions of this paper

Date Written: July 30, 2020

Abstract

Social media are increasingly influencing society and politics, despite the fact that legacy media remain the most consumed source of news. In this paper, we study the propagation of information from social media to mainstream media, and investigate whether news editors’ editorial decisions are influenced by the popularity of news stories on social media. To do so, we build a novel dataset including around 70% of all the tweets produced in French between August 2018 and July 2019 and the content published online by 200 mainstream media outlets. We then develop novel algorithms to identify and link events on social and mainstream media. To isolate the causal impact of popularity, we rely on the structure of the Twitter network and propose a new instrument based on the interaction between measures of user centrality and “social media news pressure” at the time of the event. We show that the social media popularity of a story increases the coverage of the same story by mainstream media. This effect varies depending on the media outlets’ characteristics, in particular on whether they use a paywall. Finally, we investigate consumers’ reaction to a surge in social media popularity. Our findings shed new light on news production decisions in the digital age and the welfare effects of social media.

Keywords: Internet, Information spreading, News editors, Network analysis, Social media, Twitter, Text analysis

JEL Classification: C31, D85, L14, L15, L82, L86

Suggested Citation

Cage, Julia and Herve, Nicolas and Mazoyer, Beatrice, Social Media Influence Mainstream Media: Evidence from Two Billion Tweets (July 30, 2020). Available at SSRN: https://ssrn.com/abstract=3663899 or http://dx.doi.org/10.2139/ssrn.3663899

Julia Cage (Contact Author)

Sciences Po Paris Department of Economics ( email )

28 Rue des Saints-Pères
Paris, 75007
France

Centre for Economic Policy Research (CEPR) ( email )

London
United Kingdom

Nicolas Herve

Institut National de l'Audiovisuel (Ina) ( email )

France

Beatrice Mazoyer

University of Paris-Saclay - CentraleSupélec ( email )

Gif-sur-Yvette, 91190
France

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