Marwa El Zein

Marwa El Zein

Marwa El Zein is a research fellow working on collective decision-making at the Institute of Cognitive Neuroscience, University College London. After an undergraduate degree in biology and a master degree in cognitive sciences in Paris, she completed her Ph.D. in cognitive neuroscience at Ecole Normale Supérieure (Paris) on the neural mechanisms of contextual influences during perceptual decisions on facial emotions.


My research investigates how and why humans engage in collective decisions and aims to characterize the cognitive and neural mechanisms underlying collective decisions. I test the idea that humans join groups to share responsibility for decision outcomes, thereby minimizing regret, punishment and stress in negative circumstances. More generally, my research interests fall within the field of social cognition and through my work, I wish to achieve a good understanding of social behaviours and their underlying neural mechanisms.




by Marwa El Zein

1. El Zein, M., Bahrami, B., Hertwig, R. Shared responsibility in collective decisions. Nature Human Behaviour. (2018) doi:10.1038/s41562-019-0596-4 published - 2019