 In order to address those objectives, the assessment will be focused on many various pragmatics skills : conversation, indirect language comprehension indirect questions, idiomatic expressions, sarcasm and metapragmatic knowledge in a population of 40 RR-MS patients. Those patients performances will be compared to a group of healthy matched control subjects, potential relationships between pragmatic abilities, other aspects of social cognition theory of mind and processing of emotional stimuli, cognitive functioning, psycho-behavioural aspects and the characteristics of the disease will be explore. 