Rebecca NDOUR is a postdoctoral fellow in sociology at the Ecole des Hautes Etudes en Sciences Sociales. Member of the Research Team on Social Inequalities at the Maurice Halbwachs Center (ERIS-CMH). She is preparing a thesis on the methods of transmission and preservation of rural cultures in urban areas, based on the study of the Sereers (Senegal) living in Paris and Dakar.