The incidence of aggression and violent behavior is usually reported to be high after acquired brain injury, around 54%. Behaviors with verbal agression and, less frequently, physical agressions, are described.

These behaviors may be linked to the dysfunction of the frontal lobes responsible for executive functions and complex social interactions, or to the dysfunction of the temporal structures that may also be responsible for increased aggression.

It is interesting to note that very few scales or specific questionnaires evaluate the factors and co-variables that could lead to aggressive behavior after an acquired brain injury. Such questionnaires are very rare, and none have been validated in French.

The objective of this study is to develop a questionnaire in French that aims to assess anger, hostility and aggression after acquired brain injury. The psychometric qualities of this questionnaire will be evaluated using the Rasch probabilistic model.

The development of such a tool will be of major interest for clinical practice and future clinical research.

Inclusion Criteria:

• Patients of the CHU Brugmann Hospital
• Central neurological pathology of vascular or traumatic origin, acute or chronic (known since more than one year).

Exclusion Criteria:

• Pregnant or lactating women
• Presence or antecedents of psychiatric disease
• Degenerative pathology (ex: Parkinson...)
• Antecedents of other neurologic pathologies before the acquired lesion
• Oral or written comprehension dysfunctions.