Antoine Marie, Ph.D.
Postdoctoral researcher
Center for Political Research (CEVIPOF), Sciences Po, Paris

I am an academic political psychologist working at the crossroads of social psychology, political science and cognitive science. I conduct cross-cultural experiments, ethnographic observations and develop theory to better understand how people reason and communicate about divisive political topics.
I'm also pretty active as a science popularizer in French and English on Instagram (pop science videos) and Substack—the new scientific blogging platform—where I talk about political psychology, social media, AI, apparently irrational beliefs, polarization, propaganda and foreign interferences, relationships between the sexes, and morality-related stuff.
As a researcher, I'm in particular interested in political misinformation and polarization: fake news and conspiracy theories endorsement and spread (what are their cognitive foundations? their social functions?); the benefits of AI against misinformation and polarization; hostility between groups (political, racial, sex groups); how to make our political discussions and group relations more productive; the "dark side" of morality (trade-off insensitivity, sacred values); the politicization of scientific topics; and the repression of speech on societal issues. My research emphasizes that humans are group-based and moralistic creatures, but also inclined to behave as 'intuitive activists' in contexts of threat and political conflict, even when they are not professional politicians.
I'm currently a postdoc researcher at the Center for Political Research (CEVIPOF), Sciences Po Paris, funded by an Agence Nationale de la Recherche "Access ERC" grant. I am operating as my own principal investigator on this grant, benefitting from Prof. Vin Arceneaux's mentorship. I submitted an ERC Starting grant in October 2025 and a MSCA grant in September 2026 proposing interventions against affective polarisation in France and the U.S.. Before that, I was a member of Institut Jean Nicod at Ecole Normale Supérieure, Paris, where I was working with Olivier Morin (CNRS), and a postdoc at Aarhus University, Denmark, under Michael Bang Petersen's supervision. I did my Ph.D. in cognitive science and political psychology at Ecole Normale Supérieure and Université Paris Cité (labs: CHArt and Institut Jean Nicod).
I've received funding from the French Agence Nationale de la Recherche, the German Max Planck Institute, the French Fondation des sciences sociales, and the Danish Carlsberg Foundation, among others.
I like amber beer (more than IPA), fixing bikes, tailoring second-hand clothes, artsy cinéma and documentaries, Thaï food, tennis, bouldering and a bunch of other stuff.






