After having analyzed in depth a file coming from Africa, the author gathers the characteristics of adolescents in Benin, Niger, Ivory Coast, Senegal, ZaÔr, Burkina Faso and some African migrants in France. If these adolescents, for most of them, seem to share the very same psychological problems as their French contemporaries, theory, as far as it is concerned, remains deeply influenced by the French but also is only too little influenced by the sociological specificities of these countries.