Research on linguistic variation looks at the various factors that determine how speakers and writers use language. These factors may be related to the traits of the speaker, his or her objectives, the communication context, etc.
These variation phenomena are studied at the most elementary levels of linguistic organisation (phonology, morphology), and at the most complex (prosody, discourse). Since variation phenomena are particularly prevalent in spoken language and in informal contexts, the study of linguistic variation most commonly involves recording spontaneous verbal interactions and analysing corpora of transcriptions of these verbal interactions.
Linguists at the Institute for Language and Communication (ILC) have developed a large corpus of spoken French and have acquired expertise in building, processing and managing oral corpora. This empirical research on the diverse ways in which language is actually used helps to develop theoretical models of linguistic variation and change and examines the relationship between linguistic norms and observed usage, which in turns raises important societal questions relating to both linguistic policy and the knowledge required for successful oral communication.
This expertise is also used for the analysis of other discourse types, including relatively recent genres such as online discourses or slam.