  Academic citation and social attention measure different dimensions of the
impact of research results. Both measures do not correlate with each other, and
they are influenced by many factors. Among these factors are the field of
research, the type of access, and co-authorship. In this study, the increase in
the impact due to co-authorship in scientific articles disaggregated by field
of research and access type, was quantified. For this, the citations and social
attention accumulated until the year 2021 by a total of 244,880 research
articles published in the year 2018, were analyzed. The data source was
Dimensions.ai, and the units of study were research articles in Economics,
History and Archaeology, and Mathematics. As the main results, a small
proportion of the articles received a large part of the citations and most of
the social attention. Both citations and social attention in-creased, in
general, with the number of co-authors. Thus, the greater the number of
co-authors, the greater the probability of being cited in academic articles and
mentioned on social media. The advantage in citation and social attention due
to collaboration is independent of the access type for the publication.
Furthermore, although collaboration with an additional co-author is in general
positive in terms of citation and social attention, these positive effects
reduce as the number of co-authors increases.
