Writers' communicative resources for comparing present and past research findings: A pedagogically motivated inquiry into scientists' rhetorical practices

Despite the pivotal role of ‘comparing present and past research findings' (CPPRF) in both softer and harder sciences, scant attention has been directed to how linguistic resources are used in such comparisons in certain applied sciences, particularly Material Science (MS) and Agricultural Science (AS). Based on a genre analysis and interviews with specialist informants, we examined the prevalence of CPPRF, the circumstances involved, and the salient linguistic resources employed by expert writers in the two disciplines. It was found that CPPRF is markedly more prevalent in the ‘Results and Discussion’ sections of the research articles in AS than those in MS. Agricultural scientists use more author prominent citations, especially after alignment verbs, to accentuate the roles of previous researchers while making new knowledge claims. Experts in both fields, however, employ ‘copula-complex preposition’ and ‘copula-adjective-preposition’ structures expressing commonality to explicitly support previous research findings. In cases of divergences, writers draw on comparative adjectives to tacitly avoid direct conflicts with previous researchers' findings in the process of knowledge creation. It is recommended that specific word combinations be highlighted in relation to writers' attempts to generate knowledge via comparisons of present and previous research outcomes, thus implicitly signalling additional contributions of their studies.