10 ans de recherches sur les mémoires individuelles et collectives des attentats | ENS-PSL

The presentation offers a comprehensive overview of a decade of research on memory after traumatic events. The speaker, Francis Eustache, is a leading neuropsychologist and coordinator of the ‘13-Novembre’ program, lending high credibility. The talk is well-structured, moving from the theoretical framework (individual, collective, social memory) to specific studies and findings. The methodology is rigorous: the cohort study (Study 1000) includes diverse participant groups (from direct victims to distant populations), and the neuroimaging study (Remember) uses a clever experimental design to induce and inhibit intrusions. The findings are significant: they demonstrate the neural correlates of intrusion inhibition, the detrimental effect of chronic PTSD on hippocampal volume, and the remarkable plasticity in remitters. The inclusion of social memory surveys adds a valuable societal dimension, showing how collective memory evolves over time. The speaker is transparent about limitations, such as the small sample size of remitters (n=19) and the theoretical nature of some interpretations. The talk also emphasizes the importance of interdisciplinary collaboration and the ethical responsibility to convey hope. However, the presentation is dense and may be challenging for a non-specialist audience, though this is not a flaw in content. The title accurately reflects the content. Overall, this is a high-quality, informative presentation that contributes to both scientific and public understanding of memory and trauma.

The title accurately reflects the content: a presentation of 10 years of research on individual and collective memories of the attacks.

8/10

Presentation by a recognized neuropsychologist, based on a large-scale interdisciplinary research program (Programme 13-Novembre), with published results in peer-reviewed journals (e.g., Nature Human Behaviour). The talk is well-structured and transparent about methods and limitations.

Markers derived by PSI from the transcript: the creator did not define chapters.

• 02:00Introduction to the program and its origins, including previous work on WWII memory.
• 05:00Description of the '13-Novembre' program: transdisciplinary, 10 studies, 20 million euros.
• 10:00Study 1000: cohort of 1000 participants, four circles of proximity, longitudinal design.
• 15:00Remember study: neuroimaging, focus on intrusions, experimental design with word-image associations.
• 20:00Key findings: prefrontal cortex coupling, hippocampal atrophy, and plasticity in remitters.
• 25:00Social memory surveys by CREDOC: flashbulb memories, evolution of collective memory, Bataclan dominance.
• 30:00Conclusion: program governance, partners, and acknowledgments.

• Savoirs ENS — Platform hosting the full conference and other ENS content.
• Colloque 'Au-delà des traumatismes : le défi de l'avenir' — The specific event where this presentation was given.
• ENS-PSL official website — Institutional information about the École normale supérieure.
• ENS-PSL LinkedIn — Social media presence of the institution.
• ENS-PSL YouTube channel — Channel hosting the video.

• Programme 13-Novembre official website — The program's official site, which corroborates the existence and scope of the research.
• Nature Human Behaviour article — Peer-reviewed publication supporting the neural basis of collective memory.