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Jon 540

Dr Jon Roozenbeek

Lecturer in Psychology and Security

Research interests

  • Conflict
  • Security


Jon works on the psychology of intergroup conflict and (digital) media effects. His research comprises two major themes: modern propaganda and intergroup conflict (with a specialisation in the Russian-Ukrainian war), and understanding and countering misinformation, disinformation, and extremism. He has written two recent books: The Psychology of Misinformation and Propaganda and Ideology in the Russian-Ukrainian War.

At War Studies, Jon is part of the NIHR Health Protection Research Unit (HPRU) in Emergency Preparedness and Response.

Before joining King’s, Jon held research positions at the University of Cambridge, where he worked on the psychology of misinformation and developed and tested interventions (such as online games) to counter common forms of manipulation. He holds a PhD in Slavonic Studies (2020), also from the University of Cambridge. His thesis examined media and identity building in wartime Donbas. 

Research Interests

  • The psychology of misinformation and manipulation
  • Social identity and intergroup conflict
  • Digital public policy (e.g., online harms, extremism and radicalisation, vaccine hesitancy)
  • Social media networks and echo chambers
  • The Russian-Ukrainian war (2014 – present)
  • Soviet, Russian, Donbas, and Ukrainian history, politics, and media


Jon teaches about disaster and emergency preparedness and response. He is currently supervising one PhD student (Yara Kyrychenko, University of Cambridge, Gates Scholarship). 



  • Roozenbeek, J., & van der Linden, S. (2024). The Psychology of Misinformation. Cambridge University Press.
  • Roozenbeek, J. (2024). Propaganda and Ideology in the Russian-Ukrainian War. Cambridge University Press.

Research articles:

Selected publications:

  • Maertens, R., Roozenbeek, J., Simons, J., Lewandowsky, S., Maturo, V., Goldberg, B., Xu, R., & van der Linden, S. (2024). Psychological booster shots targeting memory increase long-term resistance against misinformation. Nature Communications.
  • Roozenbeek, J., Culloty, E., & Suiter, J. (2023). Countering misinformation: evidence, knowledge gaps, and implications of current interventions. European Psychologist, 28(3), 189-205.
  • Roozenbeek, J., van der Linden, S., Goldberg, B., Rathje, S., & Lewandowsky, S. (2022). Psychological inoculation improves resilience against misinformation on social media. Science Advances, 8(34).
  • Roozenbeek, J., & Zollo, F. (2022). Democratize social-media research—with access and funding. Nature, 612(7940), 404.

Book chapters:

  • Van der Linden, S., & Roozenbeek, J. (2023). Fake news and the COVID-19 pandemic. In Miller, M.K. (Ed.) The Social Science of the COVID-19 Pandemic: A Call to Action for Researchers. Oxford: Oxford University Press.
  • Van der Linden, S., & Roozenbeek, J. (2022). A psychological vaccine against fake news: From the lab to worldwide implementation. In Mazar, N., & Soman, D. (Eds.) Behavioral Science in the Wild. Toronto: University of Toronto Press.
  • Roozenbeek, J., & van der Linden, S. (2020). Vaccineren tegen nepnieuws. In de Ridder, J., Vliegenthart, R. & Zuure, J. (Eds.) Democratie, digitalisering en waarheid. Amsterdam: Amsterdam University Press.
  • Van der Linden, S., & Roozenbeek, J. (2020). Psychological inoculation against fake news. In Greifenader, R., Jaffé, M., Newman, E., & Schwarz, N. (Eds.) The Psychology of Fake News: Accepting, Sharing, and Correcting Misinformation. London: Psychology Press.

Policy papers: