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Mathieu Lavigne

@mathieulavigne.bsky.social
354 followers 455 following 57 posts

Political scientist studying social media, misinformation & elections at McGill

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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 13h
Élections québécoises : l'intégrité électorale fait plus parler cette semaine, après qu'un article ait suggéré une possible ingérence américaine et avec le début du vote par anticipation. Notre 5e mise à jour examine comment les Québécois et les candidats abordent ces enjeux. 🧵
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 28/09/2026
Facebook est la principale source d'info politique des Québécois. Mais sans les médias sur la plateforme, comment y discute-t-on de politique ? Cette semaine, on se penche sur l'information dans les groupes Facebook et sur les publicités à caractère social et politique. 🧵
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Reposted by Mathieu Lavigne
Radio-Canada Info @info.radio-canada.ca · 22/09/2026
rc.ca
ChatGPT s’appuie sur un site web généré par l’IA pour conseiller les électeurs québécois
Les réponses de ChatGPT aux questions liées à l’élection québécoise ne sont pas toujours fiables.
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 18/09/2026
L'élection québécoise de 2026 est la première à l'ère de l'IA générative, soulevant d'importantes questions sur son utilisation, le potentiel de désinformation des électeurs et les biais possibles des agents conversationnels d'IA. 🧵
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Mathieu Lavigne @mathieulavigne.bsky.social · 18/09/2026
🤖 Peut-on se fier à l'IA comme source d'information sur l'élection ? Nous publions ce matin un audit basé sur 1770 requêtes formulées à ChatGPT et au mode IA de Google (ce qui apparaît dans l'aperçu IA dans les résultats de recherche), ainsi qu'un sondage auprès de 1213 Québécois. 🧵
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 11/09/2026
Avec la fin de la deuxième semaine de la campagne électorale québécoise, nous vous présentons notre deuxième mise à jour hebdomadaire sur l'écosystème de l'information au Québec. 🧵
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 04/09/2026
La campagne électorale québécoise est officiellement lancée, et avec elle, notre première mise à jour hebdomadaire sur l'écosystème de l'information au Québec. 🧵
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 02/09/2026
À l'approche des élections générales québécoises du 5 octobre 2026, notre rapport préélectoral examine l'écosystème informationnel du Québec dans un contexte marqué par l'évolution du paysage politique, technologique et numérique au Canada.
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 20/08/2026
Les élections provinciales québécoises approchent à grands pas, le 5 octobre, et nous sommes là pour vous aider à comprendre le paysage politique et informationnel. 🧵
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 13/08/2026
Événement hybride et gratuit 📍 Élections québécoises 2026 : Information, plateformes et démocratie
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Mathieu Lavigne @mathieulavigne.bsky.social · 06/08/2026
La santé de nos espaces démocratique vous préoccupe? Le 24 août, je participerai à L'audace des possibles, une demi-journée de réflexion organisée par @banq-officiel.bsky.social et la Chaire sur la démocratie, le vivre-ensemble et les valeurs communes. Pour s'inscrire: www.banq.qc.ca/laudace-des-...
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 30/06/2026
Over the past three years, we've tracked how Canadians' information diets have shifted amid Meta's news ban and the rise of political influencers. Our latest brief draws on nearly 9M social media posts and a survey of 1,518 Canadians to see what's replacing journalism online. 🧵
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Mathieu Lavigne @mathieulavigne.bsky.social · 22/06/2026
New in @poqjournal.bsky.social, with Holly Ann Garnett & @abridgman.bsky.social: Are Canadians losing trust in their elections? Using data from the Media Ecosystem Observatory and the Canadian Election Study since 2008, we find trust has declined sharply on the right since 2019. 🧵
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 22/06/2026
Our new incident response report exposes a coordinated network of 340 Facebook pages, largely operated from Vietnam, flooding feeds across Canada, the US, the UK, and Europe with AI-fabricated news, and inadvertently funded by Canadian public and private advertisers. 🧵
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Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 22/06/2026
Unlike a traditional foreign influence operation, Facebook's news slop economy serves no political agenda — the same fabricated stories are recycled across politicians from rival parties. The motive is profit, but when engagement is the goal, inflammatory content wins.
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Mathieu Lavigne @mathieulavigne.bsky.social · 12/05/2026
Glad to share that my article "The politicization of attitudes towards misinformation: how ideology shapes epistemic beliefs, normative judgments, and policy support" is out in the Journal of Elections, Public Opinion and Parties. www.tandfonline.com/doi/full/10....
tandfonline.com
The politicization of attitudes towards misinformation: how ideology shapes epistemic beliefs, normative judgments, and policy support
Misinformation poses an important challenge for democracy, yet political debates appear to have polarized citizens’ perceptions and responses to misinformation. In a first experiment administered d...
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 21/04/2026
With a potential Alberta referendum ahead, we're releasing "Slopaganda," an incident response report documenting a network of inauthentic YouTube channels pushing coordinated, fake Albertan political commentary. 🧵#cdnpoli
Figure 3. Most viewed inauthentic video thumbnails.
Top 16 most viewed video thumbnails from the inauthentic channels.
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Mathieu Lavigne @mathieulavigne.bsky.social · 21/03/2026
Dans la cadre des 80 ans d'Élections Québec, j'ai eu la chance de discuter avec @ledevoir.com de l'impact de la désinformation sur les élections et la confiance des électeurs, et de ce qu'il faut surveiller en 2026. www.ledevoir.com/politique/qu...
ledevoir.com
La désinformation mine-t-elle la confiance des électeurs ?
Au Québec, la confiance démocratique demeure solide, mais certains signes de fragilité apparaissent.
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Reposted by Mathieu Lavigne
Joe Lofaro @joelofaro.bsky.social · 27/02/2026
100 Canadian social media users, mostly influencers, account for nearly 70 % of anti-institutional conspiracy theory content online, according to a new study from researchers at @mcgill.ca and @utoronto.ca.
ctvnews.ca
Researchers studied who’s spreading the most conspiracy theories in Canada. Here’s what they found
Canadians are becoming more exposed to conspiracy theory content in their social media feeds, but only a certain number of accounts are responsible for promoting the vast majority of it, a new study s...
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Reposted by Mathieu Lavigne
Le Devoir @ledevoir.com · 27/02/2026
Une infime minorité occupe une place disproportionnée dans le discours ambiant au pays, démontre un rapport.
ledevoir.com
Une centaine de comptes sont à l’origine de la majorité des contenus conspirationnistes au Canada
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Mathieu Lavigne @mathieulavigne.bsky.social · 26/02/2026
Great discussion with @rorywh.bsky.social on our report on conspiratorial claims in Canada’s online ecosystem. Analyzing 14M posts across 4 platforms, we find: 1. Supply is highly concentrated 2. Conspiracy content primarily circulates on X 3. High awareness, limited belief among the public
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 26/02/2026
@mathieulavigne.bsky.social spoke with @rorywh.bsky.social from @nationalobserver.com about our latest brief on online conspiracy theories and institutional distrust in Canada, from the Centre's Media Ecosystem Observatory (MEO).
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 23/02/2026
Our newest brief, “Conspiratorial Claims and Institutional Distrust in Canada’s Online Ecosystem,” examines how anti-institutional conspiracy theories circulate online and how widely they resonate with Canadians.🧵 #cdnpoli
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Reposted by Mathieu Lavigne
Philine Widmer @phinifa.bsky.social · 18/02/2026
Can feed algorithms shape what people think about politics? Our paper "The Political Effects of X's Feed Algorithm" is out today in Nature and answers "Yes." www.nature.com/articles/s41...
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Mathieu Lavigne @mathieulavigne.bsky.social · 04/02/2026
As teens increasingly use AI chatbots in their daily lives and documented harms have begun to surface, we surveyed 1,454 Canadians about their perceptions of risks, attribution of responsibility for harm, and support for specific interventions. @mediatechdemocracy.bsky.social tinyurl.com/p4spweew
tinyurl.com
Canadians’ Perspectives on Governing AI Chatbots A Policy Brief — Centre for Media, Technology and Democracy
This report adds to an evidence-based mandate for AI chatbot regulation in Canada, drawing on nationally representative survey data from 1,454 Canadians and mapping public preferences onto established...
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Reposted by Mathieu Lavigne
Centre for Media, Technology & Democracy @mediatechdemocracy.bsky.social · 03/02/2026
How do Canadians feel about governing AI chatbots? Our new policy brief draws on nationally representative survey data from 1,454 Canadians, demonstrating overwhelming public concern across all surveyed risk categories and clear attribution of risk to AI companies.🧵 #cdnpoli
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Mathieu Lavigne @mathieulavigne.bsky.social · 19/12/2025
Glad to have contributed an entry on "Misinformation" with @obboutin.bsky.social to the IPSA Companion to Political Science. Thanks to Daniel Stockemer, Stephen Sawyer, and @audreygagnon.bsky.social for the excellent editorial work! doi.org/10.1007/978-...
doi.org
Misinformation
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Reposted by Mathieu Lavigne
Media Ecosystem Observatory @meo-cdmrn.bsky.social · 24/11/2025
Au printemps, l'équipe de Découverte de @info.radio-canada.ca a suivi l'équipe de l'OEM pour mieux comprendre notre projet de surveillance des élections fédérales canadiennes de 2025. Voici le résultat de leur travail : tinyurl.com/n3tvcjn9
tinyurl.com
Réseaux sociaux et démocratie : bruit, opacité et risques
À moins d'augmenter l'encadrement des plateformes, les tentatives de manipulation politique pourraient avoir le dessus sur notre capacité à les détecter.
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Reposted by Mathieu Lavigne
Media Ecosystem Observatory @meo-cdmrn.bsky.social · 21/11/2025
The #CharlieKirk shooting has sparked widespread debate about political violence. So, we surveyed Canadians to evaluate their perceptions of the event and political violence, comparing our results to U.S. data when available. Here's what we found 🧵 #cdnpoli #uspoli
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Mathieu Lavigne @mathieulavigne.bsky.social · 09/10/2025
Glad to have contributed to this report on the information ecosystem during the 2025 Canadian election. It highlights key challenges and potential actions to protect our elections amid GenAI-powered disinformation, political segmentation, and reduced news visibility on social media platforms.
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Reposted by Mathieu Lavigne
Media Ecosystem Observatory @meo-cdmrn.bsky.social · 02/05/2025
WEEKLY UPDATE: WEEK 6 OF CANADA’S 45TH FEDERAL ELECTION🚨 We open this final weekly update with 6 key reflections from our research team on the 2025 Canadian federal election. These are preliminary impressions—our full post-election report will offer deeper insight. 🧵
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Reposted by Mathieu Lavigne
Media Ecosystem Observatory @meo-cdmrn.bsky.social · 18/04/2025
Over 25% of Canadians are being exposed to more sophisticated and more politically polarizing fake content. These ads don’t just defraud individuals—they risk undermining trust in journalism and the democratic process, spreading misleading political content at a critical time ⚠️
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Reposted by Mathieu Lavigne
Media Ecosystem Observatory @meo-cdmrn.bsky.social · 11/04/2025
WEEKLY UPDATE: WEEK 3 OF CANADA’S 45TH FEDERAL ELECTION🚨 As Canada approaches its federal election, we're witnessing a surge in generative AI (GenAI) content that poses serious challenges to the integrity of our information ecosystem. 🧵⬇️ #GenAI #Deepfakes #CanadaElection2025
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Media Ecosystem Observatory @meo-cdmrn.bsky.social · 04/04/2025
WEEKLY UPDATE: WEEK 2 OF CANADA’S 45TH FEDERAL ELECTIONS🚨 From foreign interference narratives to AI-generated conspiracies, here’s what we’re seeing this week. 🧵⬇️ #CdnPoli #Election2025
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Media Ecosystem Observatory @meo-cdmrn.bsky.social · 25/03/2025
It’s official: Canada’s 45th federal election is happening on April 28. With rising threats of foreign interference & information manipulation, protecting our democracy has never been more urgent. That’s why the Canadian Digital Media Research Network (CDMRN) is stepping in. 🧵
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Mathieu Lavigne @mathieulavigne.bsky.social · 18/03/2025
How have new technologies impacted democratic elections? What should be done to enhance electoral participation and integrity going forward? Submit your abstract by March 31 to join our 1-day pre-APSA workshop in Vancouver! www.electoralintegrityproject.com/vancouver-20...
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Mathieu Lavigne @mathieulavigne.bsky.social · 17/02/2025
🚨Call for Papers!🚨 We are organizing a pre-APSA workshop bringing together scholars, policymakers, and practitioners to discuss the threats and opportunities that new technologies pose for elections and democracy. Submit your abstract by March 31: www.electoralintegrityproject.com/vancouver-20...
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R. Michael Alvarez @rmichaelalvarez.bsky.social · 17/01/2025
Day 2 of Information and Misinformation in Elections is about to begin! Join us for an incredible day of research and discussion! #CaltechElectionIntegrityConf2025 www.protectingtheelection.us/conference
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Mathieu Lavigne @mathieulavigne.bsky.social · 16/01/2025
Looking forward to presenting my research at the #CaltechElectionIntegrityConf2025! We rely on survey-linked web browsing data to evaluate exposure to election fraud content and the durability of fraud beliefs.
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R. Michael Alvarez @rmichaelalvarez.bsky.social · 15/01/2025
We've got a great program for #CaltechElectionIntegrityConf2025 tomorrow and Friday! Tomorrow: two panels of amazing research presentations, two interesting plenary talks, and two roundtable conversations with election officials and election practitioners. www.protectingtheelection.us/conference
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Brendan Nyhan @brendannyhan.bsky.social · 08/01/2025
Another thing bothering me about the Zuckerberg statement -- the assertion that fact-checkers have “destroyed more trust than they created." FCers are obviously imperfect and have made mistakes, but most of what people hear about them is ax-grinding by conservative elites, not fair-minded critiques
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Mathieu Lavigne @mathieulavigne.bsky.social · 23/12/2024
Nouvelle publication dans la Revue canadienne de science politique examinant l’appui général des Québécois.es envers les interventions des plateformes et gouvernements pour lutter contre la mésinformation. doi.org/10.1017/S000...
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Mathieu Lavigne @mathieulavigne.bsky.social · 20/11/2024
Très heureux d’avoir contribué un chapitre sur la polarisation affective dans L’état du Québec 2025. J’ai eu l’occasion d’en discuter avec Alexandre Sirois de @lapresse.ca www.lapresse.ca/dialogue/chr...
lapresse.ca
Polarisation | Qu’est-ce qu’on attend pour se parler ?
On aurait tort de croire que la polarisation, qui atteint un niveau inquiétant chez nos voisins du Sud, est un problème typiquement américain.
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Brendan Nyhan @brendannyhan.bsky.social · 06/11/2023
Has anyone merged Twitter handles onto the Lin et al. domain quality ratings or an equivalent dataset and would be willing to share them with a postdoc?
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