Chavez, Thomas David F., 1958-. The language of uncertainty in a new illness : hedging and modality in the biomedical discourse of severe acute respiratory syndrome (SARS) . Master's Degree(Health Social Science). Mahidol University. : Mahidol University, 2004.
The language of uncertainty in a new illness : hedging and modality in the biomedical discourse of severe acute respiratory syndrome (SARS)
Abstract:
Located in the role of language in the social construction of health and disease, this study
examined the discourse generated by medical journal authors at the start of a new infectious
epidemic outbreak: Severe Acute Respiratory Syndrome (SARS). The research question asked
how these authors maintained a balance between describing the uncertainties inherent in a new
illness and their ascribed social role of expertise on such matters. Using micro-linguistic
corpus-oriented social discourse analysis, the study focused on the “grammar of a new
disease” by examining two linguistic resources of tentativity: hedging, which tones down
communication to provide protection from potential recrimination or irrevocable commitment;
and modality, where the lexico-semantic range of truth and certainty resides.
A list of 39 discrete lexical items (8 verbs, 8 adjectives, 8 modals, and 15 adverbs) of
apparent semantic tentativity was processed into concordance software, which generates all
instances of phrasal use in the 28 articles that composed the study corpus of 51,000 words.
The corpus expostulated on the “lessons of SARS”. The concordances were then processed
into qualitative coding software to yield themes of uncertainty and retrospective lessons or
recommendations. The themes of uncertainty were laboratory diagnosis, transmission,
symptomatology, origin, treatment, potential re-emergence, and possible vaccine
development. The key putative lessons centered on the need for centralized state command,
surveillance and information, preparedness planning, isolation and quarantine, management of
travel-related risk, laboratory technology, public communication and education, research and
infection control at the healthcare setting.
Key micro-linguistic findings indicated a pervasive use of tentative language, with
nearly a thousand instances of phrasal use, the equivalent to one hedge or modalized
expression in every third sentence. The most prevalent lexical item was the epistemic modal
auxiliary may, signifying not only the hypothetical nature of experimental science but also of a
communal social strategy to maintain politeness and to avoid brusque assertion of unwarranted
scientific claims. This contextualizes the nature of scientific writing as a set of social practices.
It is argued that the authors managed the uncertainty of SARS by orchestrating substance and
form into an explanatory model (along Kleinmanesque lines) of the epidemic. By drawing on
SARS as instructive (the learning of lessons), the authors were able to maintain their ascribed
social role as technical experts. Behind this tension of uncertainty and expertise lay interesting
undercurrents of medical ideology that revolved around themes of dominance – biomedical,
bureaucratic, cultural, and (English) linguistic – in “documenting” and constructing a new
illness geographically far removed from the Anglophone scientific and medical world.
Implications for this discourse on how a new illness is conceptualized, on policy and on other
areas that impact health social science are discussed