Antoine Marie is a Ph.D. student at the Institut Jean Nicod, Ecole Normale Supérieure - PSL University in Paris, France working in the field of the naturalistic — cognitive and evolutionary — social sciences. He also works with the UM6P School of Collective Intelligence in Ben Guérir, Morocco. With a background in philosophy, sociology, and psychology, he conducts psychology experiments and utilizes evolutionary theory to investigate the ultimate functions and proximate nuts and bolts of human tribalism (e.g. ideological polarization, extremism, 'self-sacrifice') and 'moral rigidity' (folk deontologism, sacralization processes, folk meta-ethical objectivism).
Moral rigidity and its intimate link to in-group boundaries may have evolved so as to make us behave, and be seen, as trustworthy yet cautious team members in social environments mired by intergroup competition.