Promote the need for sincere information for a democracy based on trust



Arnaud Mercier is professor of Information & Communication at the French Press Institute, University Paris-II Panthéon-Assas, where he is in charge of the Information & Communications Bachelor’s program and a director of studies.

Doctorate in political science, he is a researcher at CARISM, and focuses on three research topics: political communication, journalism and media coverage of current events, digital transformations of information and the use of digital social networks. He created the Observatory of Webjournalism at the University of Lorraine in 2009, and the Professional Degree in Journalism and Digital Media, which has since become a master’s degree.

He has published numerous articles and books on these themes.

He was president of the news website The Conversation France, which deciphers current events through the lens of in-depth academic articles, from its creation in 2015 until 2018.


Fake news et post-vérité : 20 textes pour comprendre et combattre la menace, e-book, The Conversation, juin 2018

#info. Commenter et partager l’actualité sur Twitter et Facebook, (avec Pignard-Cheynel N.), Paris, Éditions de la Maison des sciences de l’homme, 2018

La présidentielle chamboule-tout. La communication politique au prisme du dégagisme, (avec Maarek P.), Paris, L’Harmattan, 2018  

La communication politique, Paris, CNRS éditions, 2e édition, 2017

Tweets from the campaign trail: Researching Candidates’ Use of Twitter During the European Parliamentary Elections (Frame A, Mercier A, Brachotte G, Thimm C), Frankfurt am Main, Peter Lang, 2017

Médias et opinion publique, Paris, CNRS éditions, Les essentiels d'Hermès, 2012

Le journalisme, Paris, CNRS éditions, 2009

Armes de communication massive : Informations de guerre en Irak : 1991-2003 (avec Jean-Marie Charon), CNRS éditions, 2004

Le Journal télévisé. Politique de l'information et information politique, Paris, Presses de Sciences Po, 1996.   

#info. Commenter et partager l’actualité sur Twitter et Facebook, under the direction of Arnaud Mercier and Nathalie Pignard-Cheynel, Éditions de la Maison des sciences de l’homme, 2018

Journalistic content is increasingly appearing directly on our social media “walls”, primarily on Facebook and Twitter, but also through LinkedIn or Snapchat, and of course via videos uploaded to YouTube or DailyMotion. The mediation of these platforms to access news information is not neutral.

The purpose of this book is to try to understand how our relationship to media and information is adapting to the gradual development of a new information ecosystem shaped by the rise of digital social networks. What are we sharing? How do we do it? How do we comment on the news on Twitter or Facebook? What new uses and practices do Web users adopt to exploit the new possibilities afforded by these platforms: hashtags, like, retweet, emojis and emoticons …

In the era of fake news, where we risk being trapped in filter bubbles via algorithms and the recommendations of our “friends”, it is essential, for the proper functioning of our democracies, that we fully take into account the upheaval that is occurring with regards to our daily information practices.

Endowment fund for the creation of the Fondation Descartes
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