Samuel Veissière

McGill University

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Samuel Veissière is a researcher at McGill University whose work addresses adolescence, development trajectories, and ideological hybridization. Veissière has also written on nihilistic violence and violent extremism, as well as on socio-psychological dimensions of decision-making in the context of integrated water resource management.

Has published with:

Cécile Rousseau

Author Metrics

49 Publications

3,039 Citations

21 h-index

Expert in:

Publications in advances.in/psychology

A photo showing a dim, cluttered teenager's bedroom viewed at dusk, with a large window revealing a burning, apocalyptic cityscape glowing orange through partially raised blinds and curtains. Inside are an unmade bed, a wooden chair, a glowing computer monitor on a messy desk, scattered cables, and photographs taped to the walls—visually evoking youth isolation, dystopian worldviews, and radicalization themes discussed in the article.

Commentary

Shifts and continuity in contemporary violent extremism: Moving toward a dynamic and developmental understanding?

By Cécile Rousseau & Samuel Veissière

July 20, 2026

Page last updated: September 30, 2026