The author likes to stress how important it is to consider what interpretation is supposed to achieve before embarking on a detailed study of the processes involved. Everything that is spoken in a booth in response to speakers’ utterances is interpreting and representative of the state of the art; in a study that would propose to survey the present state of the profession, all types of interpretation would have to be taken into consideration. This, however, is not the purpose of the author’s research team: the team concentrates on the process of interpretation that establishes communication. The author believes that in doing so, she determines not only what such interpretation is, but also what speech behaviour consists of. Seen from this angle it becomes a truism to state that interpretation, to be taken as an object for investigation, has to establish communication.