of a single national or linguistic culture, for instance, or of a larger unity such as "the West", right up to "the species"'; we might similarly characterize the semiosphere of a particular historical period (Hartley 1996, 106) . This conception of a semiosphere may make semioticians seem territorially imperialistic to their critics, but it offers a more unified and dynamic vision of semiosis than the study of a specific medium as if each existed in a vacuum. There are, of course, other approaches to textual analysis apart from semiotics - notably rhetorical analysis , discourse analysis and 'content analysis' . In the field of media and communication studies content analysis is a prominent rival to semiotics as a method of textual analysis. Whereas semiotics is now closely associated with cultural studies, content analysis is well-established within the mainstream tradition of social science research. Whilst content analysis involves a quantitative approach to the analysis of the manifest 'content' of media texts, semiotics seeks to analyse media texts as structured wholes and investigates latent, connotative meanings. Semiotics is rarely quantitative, and often involves a rejection of such approaches. Just because an item occurs frequently in a text does not make it significant. The structuralist semiotician is more concerned with the relation of elements to each other. A social semiotician would also emphasize the importance of the significance which readers attach to the signs within a text. Whereas content analysis focuses on explicit content and tends to suggest that this represents a single,