ABSTRACT
In human sciences, and particularly in social psychology, the notion of intervention is acknowledged as a practice that corresponds to an explicit and intentional project of a deliberate act of change. Differing from application, as we will see further on, intervention is based on research aiming at determining, on various levels, all the elements of a field in which the activity of an individual or collective subject is carried out, in order to encourage transformation, to the benefit of the latter (Dubost 2007). It can have, in this regard, a non-conformist,reformative, or adaptive purpose.
