GEMASS is a research unit of Paris-Sorbonne University and CNRS (Centre national de la recherche scientifique), also supported by the Fondation Maison des Sciences de l’Homme. The unit was created in 1971 by Raymond BOUDON who steered the unit until 1998. Mohamed CHERKAOUI steered it from 1999 to 2009. Olivier GALLAND is the current director, Pierre DEMEULENAERE is deputy-director.