[Acting out in the four psychic structures]. / Les rouages du passage à l'acte dans les quatre structures psychiques.

To try to understand acting out, it depends of conciliation between the reality of the act and the psychic life. For that, it is necessary to listen the word of the criminal authors. What transgression represents for them? Based on clinical experience in a correctional center, this article takes a closer look about prisoner, incarcerated after having committed criminal acts. This clinical material could help to raise a new perspective around modern psychopathology. What is the act's difference between neurosis, perversion, borderline and psychosis? Our research will try to differentiate the psychic issues.