Discourse variation in medical texts : Schema, theme and cohesion in professional and journalistic accounts.

Abstract

This thesis is formed of 2 volumes, the second volume (the appendix of associated journal articles) has not been scanned due to copyright restrictions (see page 84 of volume 1 for a list of sources). [Summary] This study is undertaken as an exercise in Comparative Discourse Analysis. Working within the framework of the branch of Discourse Analysis known as Genre-Analysis, this thesis examines differences in the organization of discourse in three parallel genres of written medical texts - the Abstract (ABS) accompanying a medical research paper, the Research Article Proper (RAP) and the equivalent Journalistic Reported Version (JRV) of the research article in a popular science magazine or in a newspaper. The corpus for the study consists of 45 texts: 15 triadic sets of parallel texts representing an equal number of texts from each of the three genres on which the study is based. The approach to the analysis of features of discourse organization is eclectic and comparative. Thus, texts in the corpus are analysed for differences at three levels of organization - the levels of schematic structure, Thematic Progression (TP) and Cohesion. A number of differences are observed across the three genres. First, the genres are found to differ distinctively in the way information is organized into hierarchical schematic units. Less distinctive pragmatic differences are observed in the realization and distribution of formal syntactic elements which constitute theme. Similarly, very subtle pragmatic differences are observed in the realization and function of Reference, Conjunction and Lexical Cohesion items in texts across the three genres. The results indicate that there is a great similarity in discourse organization between the professional genres (ABS and RAP) and that both genres differ distinctively from the popularized genre (JRV). This thesis provides conclusive evidence to support the view that subject-matter is not the sole determinant of genre; that subject-matter is only one alongside a number of other contextual factors such as purpose, audience and medium of discourse by which genres must be characterized. To this end, this thesis is a contribution to the newly developing field of genre-analysis. But, more importantly, it is a contribution to research in the field of science popularization.

Publication DOI: https://doi.org/10.48780/publications.aston.ac.uk.00014823
Divisions: College of Business and Social Sciences > School of Social Sciences & Humanities
Additional Information: Copyright © Kevin Ngozi Nwogu, 1989. Kevin Ngozi Nwogu asserts his moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately.
Institution: Aston University
Uncontrolled Keywords: Compare Discourse Analysis,Genre Analysis,Medical Discourse,Science Popularization
Last Modified: 23 May 2025 13:35
Date Deposited: 22 Mar 2011 10:08
Completed Date: 1989
Authors: Nwogu, Kevin Ngozi

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