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Increase of multi-authored papers!

Last week, Akira has done a little analysis on the number of authors per paper in the journals included in our corpus and discovered that in certain journals the number of multi-authored papers increased over time, but also that the number of authors per multi-authored paper has increased as well.
The journals Akira analysed were provided by our partners, Elsevier publishers, and include the following journals: Agriculture, Ecosystems & Environment (AEE), Biosystems (B), Computers, Environment and Urban Systems (CEUS), Environmental Pollution (EP), Global Environmental Change (GEC), Journal of Rural Studies (JRS), Advances in Water Resources (AWR), Journal of Strategic Information Systems (JSIS), Plant Science (PS), Resource and Energy Economics (REE), and Transportation Research Part D: Transport and Environment (TRTE).

NumberAuthors

ProportionAuthors

The results of the analysis show that AEE, EP, AWR, and PS journals show a noticeable increase in the number of papers with 5 or more authors over a period of 10 years. At the same time, a drop in the number of single-authored papers can also be noticed.
This applies to both the journals labelled as mono-disciplinary (MD), i.e. Advances in Water Resources (AWR) and Plant Science, and interdisciplinary (ID) journals, such as Agriculture, Ecosystems & Environment (AEE) and Environmental Pollution (EP).
One possible explanation for this tendency is that the research teams have grown in the number of people involved in the research over the decade. Alternatively, it may also imply a greater cooperation between different research teams.
If you have any thoughts or insight why this may be so, please leave us a comment below.

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IDRD Corpus details

We have completed the full research corpus by adding another 10 journals to the already compiled corpus of the Global Environmental Change (GEC) research articles. In the same manner as with GEC, only the main body of each paper has been included into the corpus. Thus, all the contents of abstracts, footnotes, boxes, references and appendices have been excluded from the data set.

In total, the corpus consists of 11 journals, and includes 11462 journal articles which amount to more than 53 million word tokens making it of the largest specialised corpora. In comparison, general language corpora like, for example, the British National Corpus (BNC)  and Bank of English (BoE), consist of 100 and 450 million word tokens respectively. Thus, our corpus represents a significant body of both monodisciplianry and interdisciplinary discourse. Continue Reading