Carnegie Mellon University in Qatar

Violent Extremism &
Environmental Sustainability Lab

The psychology of why people turn to violence — and how they can be moved toward a safer, more sustainable world.

Who we are

Two questions, one motivational science

Our lab studies two challenges of our time: violent extremism and environmental sustainability. Through cross-cultural research in the lab and in the field, we work to understand the psychological processes that lead people toward political violence and toward pro-environmental behavior — and to design effective interventions that build safer, more sustainable societies.

The assumption underlying our work is that human judgment and behavior are goal-driven and dynamic: what people do depends on the salience and desirability of competing goals, the means available to them, and the networks they belong to.

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incl. one book
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Media appearances
600+ to date
Current research

Questions we're working on

What drives someone to ideological violence?
Bélanger, J. J. (2021). The Sociocognitive Processes of Ideological Obsession: Review and Policy Implications. Philosophical Transactions of the Royal Society B.
Which interventions actually shift climate behavior — and where?
Vlasceanu, M., Doell, K. C., … Bélanger, J. J., et al. (2024). Addressing Climate Change with Behavioral Science: A Global Intervention Tournament in 63 Countries. Science Advances. — 2025 Cialdini Prize.
Can a sense of secure attachment make people care more about our shared future?
Nisa, C., Gu, M., & Bélanger, J. J. (2025). Eliciting attachment security with social norm messages is linked to reduced energy consumption in extreme heat in the UAE. Communications Earth & Environment.
Do counter-narratives reduce support for extremism?
Bélanger, J. J., Snook, D., Dzitac, D., & Cheppih, A. (2023). Challenging Extremism: A Randomized Control Trial in the Middle East and North Africa. Current Research in Ecological and Social Psychology.
In the news

Research for the public

What Motivates COVID Rule-Breakers?
Jocelyn Bélanger & Pontus Leander
Scientific American · Dec 2020
How Behavioral Science Can Help Contain the Coronavirus
Jocelyn Bélanger
Scientific American · May 2020
Can You Change for Climate Change?
Claudia Nisa & Jocelyn Bélanger
Scientific American · Dec 2019
Sri Lanka's Radical Approach to Deradicalization Worked Before. It Can Again.
Jocelyn Bélanger
World Politics Review · Sep 2019
OCD is increasingly a common denominator among extremist behaviors
Featuring research on ideological obsession
New York Post · Feb 2023
ChatGPT gets better marks than students in some university courses
Featuring our 32-course AI study
New Scientist · Aug 2023