Abstract
Although using different labels, genre theorists from different traditions have generally given privilege to the communicative purpose, in this article referred to as rhetorical objective, as genre determinant (see e.g. Swales, 1990; Bhatia, 1993; see also Hasan, 1989; Halliday and Martin, 1993; Eggins, 1994). Genre analysts who have studied press releases in particular (e.g. Frandsen et al., 1997; Jacobs, 1999) tend to share this view, but nevertheless categorize communicative events conveyed through the press release as belonging to one genre despite variation in rhetorical objectives. This article argues that although the press release may be seen as a genre on the basis of textual form, it does not qualify for the genre label if analysed in terms of content and rhetorical objective. To substantiate my claim, I shall discuss a small corpus of press releases, all focusing on a specific biotechnological issue. In my analyses I shall discuss staging in terms of content as well as logico-semantic relations between stages, patterns of stage combinations and their linguistic realizations with the aim of identifying variation in rhetorical objective.

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