After mentioning a certain amount of data concerning the dynamics of adolescence, the author envisages the current contributions of developmental psychiatry and very early psychoanalysis to the renewed understanding of these dynamics. Different convergences are revealed concerning the technique of individual adolescent psychotherapies and joint parent-baby psychotherapies (whose history is
... [Show full abstract] briefly retraced) and also concerning the qualities required by therapists doing such work (malleability and narritivity in particular). The idea is not to consider the adolescent as an old baby, but rather to specify the importance of the persistance, during adolescence, of primal levels of psychic functioning.