“Although a scientific description of the deviant communicative behaviour of a problem young person in the family is incredibly complex, a therapeutic description can be simplified.
For therapeutic purposes, the behavior can be simplified into two main functions:
1) the Social Function: the young person stabilizes a group of intimates by his or her eccentric behaviour. It is this function which is the main issue for therapeutic interventions.
2) the Metaphoric Function: every deviant act is also a message to the members of the group and to outsiders. The act can be seen as a metaphor, often a parody, of a theme important to the group. Usually it is a group issue which is conflictual.”