Antoine Marie

Antoine Victor Marie is a political psychologist with a background in social psychology, political science, and cognitive science. He conducts cross-cultural experiments and develops theoretical frameworks to explore how people reason and communicate about divisive political topics.

His research focuses on several key phenomena, including the endorsement and spread of fake news and conspiracy theories, intergroup hostility (political, racial, or gender-based), ways to make political discussions more productive, the "dark side" of morality, the politicization of scientific issues, and the repression of speech on societal matters.

He is currently a postdoctoral researcher at CEVIPOF, Sciences Po Paris, funded by an ANR Access ERC grant under the supervision of Prof. Vin Arceneaux. Previously, he was a member of the Institut Jean Nicod at the École Normale Supérieure in Paris, where he worked with Olivier Morin (CNRS), and a postdoctoral fellow at Aarhus University, Denmark, under the supervision of Michael Bang Petersen. He completed his Ph.D. at the École Normale Supérieure and Université Paris Cité (labs: CHArt and Institut Jean Nicod).

His research has been supported by the French Agence Nationale de la Recherche, the Max Planck Institute, and the Carlsberg Foundation, among others.

https://www.antoinemariesci.com/

Bor, A., Marie, A., Pradella, L., Petersen, M. B. (2025). Undemocratic and unequal countries experience more political hostility on social media – Evidence from 30 Countries, Nature Human Behavior. OSF Preprint: https://osf.io/preprints/psyarxiv/spkyz 

Marie, A. & Petersen, M. B. (2025). Motivations to connect with audiences increase partisan sharing on social media. PNAS Nexus. 4(7), pgaf197, https://doi.org/10.1093/pnasnexus/pgaf197  

Marie, A., Trad, H., Strickland, B. (2025). Laypeople have difficulty processing efficiency when assessing environmental policies. Behavioral public policy. 1-28. open access doi: 10.1017/bpp.2025.10025 

Arnal, C., Abraham, L. & Marie, A. (2025). Prompt Selection Matters: Enhancing Text Annotations for Social Sciences with Large Language Models. Journal of Computational Social Science 8(73), https://doi.org/10.1007/s42001-025-00388-6  (impact factor 3.2)

Marie, A. & Petersen, M. B. (2024). Moralization of rationality can stimulate sharing of hostile and false news on social media, but intellectual humility inhibits it. Political communication. Open access: https://doi.org/10.1080/10584609.2024.2363542 (impact factor 8)

Marie, A.*, Xiao, H.* & Strickland, B. (2024). Moral commitment to gender equality increases (mis)perceptions of gender bias in hiring. European journal of social psychology. Open access: https://doi.org/10.1002/ejsp.3071    * joint first auth​ors  (CiteScore Scopus: 6)

Marie, A. (2024). Review of Breaking the Social Media Prism, by Chris Bail (in French). Revue française de science politique. https://shs.cairn.info/revue-francaise-de-science-politique-2023-4-page-734?lang=fr   OSF preprint: https://osf.io/rven9

Marie, A., Altay, S., Strickland, B. (2023). Moralization and extremism robustly amplify myside sharing. PNAS Nexus 2 (4), Open access: https://doi.org/10.1093/pnasnexus/pgad078 (impact factor 5)

 Marie, A. & Petersen, M. B. (2022). Political conspiracy theories as tools for mobilization and signaling. Current opinion in psychology, DOI: https://doi.org/10.1016/j.copsyc.2022.101440, Open access: https://osf.io/c26yw/