This article is aimed at introducing a French discourse analysis model, e.g. the ‘star model’, initiated by the LAA team led by Robert Vion in Aix-en-Provence, to English-speaking researchers. It will be argued that language activity is multi-dimensional and can be traced at various heterogeneous levels of speech productions belonging to macro as well as micro orders. Speakers achieve different varieties of positioning which result in negotiating an interactional space within a pre-given situation. The model is precisely designed to offer (...) a unified and comprehensive view of such heterogeneous phenomena in constant interconnection. In this study, we also intend to illustrate our approach through the analysis of two different corpora. Speakers’ strategies under extreme conditions will be analysed; the various sequences used were taken from a special corpus which we were asked to study as part of a national research programme. In order to illustrate interactional space shifts, we will also use the transcript of a meeting which took place between a patient and a medical investigator in a hospital in Marseilles. (shrink)