language with reference to cognitive processes, we explain cognition by reference to linguistic processes" (Halliday & Matthiessen 1999: x). So, cognitive and functional approaches are, as it were on the same road, but while one is travelling from A towards B, the other is travelling from B towards A, so they must meet somewhere. Formal approaches are somewhat apart, particularly since, in the wake of Chomsky, they tend to have as their object of study an idealized, and hence artificial, language, rather than a natural language. At the same time, all languages are encoded in form, so all theories will have to deal with form at some point, so there may be a meeting point even in this case.My object in this paper 1 is to attempt to show some of the ways in which I have found systemic functional linguistics to be useful in the study of specialized text. This is not intended to imply that this is to the exclusion of other approaches. All of the features that I shall look at can be studied within other frameworks, but I have found that systemic functional linguistics lends itself to this type of study. I shall take as my example for illustrative purposes the case of the physical sciences research article.
Use of the passive voiceUntil fairly recently it was commonly believed that in the scientific research article writers avoided the use of first-person pronoun subjects in favour of the passive form. A number of studies (Barber 1962;Huddleston 1971; Banks 1994) suggested a passive rate of the order of 30% of finite verbs. However, over the last 15 years or so some studies have suggested that there is evidence of a fall in passive use (Seoane 2006; Seoane & Hundt 2018), while others suggest a rise in the use of first-person pronoun subjects (Hyland & Jiang 2016a, 2016b. In an attempt to see to what extent these claims are valid, I recently (Banks 2021) took a small sample of six randomly chosen articles from the Proceedings of the Royal Society A for the year 2018. This journal deals with the mathematical, physical and engineering sciences. The articles have between two and six co-authors. None of them are single-authored. The total number of coauthors is 23, 14 of whom have typically anglophone names. There are 13 institutional addresses provided by these authors, all but one in the UK, the exception being an address in Switzerland. For each article the journal gives three subject areas. The area of civil engineering occurs three times and environmental engineering and mathematical modelling twice each. The others were acoustics, applied mathematics, artificial intelligence, electrical engineering, energy, fluid mechanics, geophysics, hydrology, mathematical physics, structural engineering, and wave motion.The sample has a total of 2808 finite verbs, of which 825 are passive in form, giving an overall passive rate of 29%, which corresponds to the rate that had been prevalent during the 20 th century. Taken on its own, this would seem to indicate that the rate of passive use has not changed. However, the overall rate m...