Abstract
This paper presents an analysis of the anti-vaccination movement’s referencing of research articles on the topic of vaccination in the social media network Twitter. Drawing on the concept of bibliographic coupling, the paper demonstrates how Twitter users can be coupled based on articles mentioned on Twitter. The sample applied consists of 113 open access journal articles. The combination of tweeter coupling with the respective stance of Twitter accounts vis-à-vis vaccination makes possible the creation of a network graph of tweeters mentioning this corpus of articles. In addition to a common interest in the scientific literature, the findings show distinct communities of shared interests within the anti-vaccination movement, and demonstrate that tweeter coupling can be used to map these distinctive interests. The emergence of Twitter accounts serving as cognitive bridges within and between communities is noted and discussed with regard to their relative positions in the network. This paper’s results extend the knowledge on the application of altmetric data to study the interests of non-scientific publics in science; more specifically, it adds to the understanding of the potentials of open science and science–society interactions arising from increased access by non-scientists to scientific publications.
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Using a web crawler to identify anti-vaccination accounts followed by manual verification of the Twitter accounts, Van Schalkwyk (2019a) identified 658 anti-vaccination accounts that mention open access journal articles on the topic of vaccination and autism. From the manual verification process, several pro-science accounts were also identified. Anti-vaccination Twitter accounts were defined as those that regularly tweet or retweet content to persuade others of the dangers of vaccines, while pro-science accounts were those that (re)tweet to defend the consensus position of science, that is, that vaccines are effective in combatting infectious diseases and pose no material health risks to those who are vaccinated. The data on stance, while not comprehensive in the sense that it provided classifications for all tweeters in the tweeter coupling network, was added to NodeXL to provide additional information in the analysis of the network.
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Acknowledgements
The authors thank the reviewers of this and previous versions of this paper for their comments and constructive suggestions. The authors thank Altmetric.com for providing access to its Twitter data. This work is based on research supported by the South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation (NRF) of South Africa (Grant No. 93097). Any opinion, finding and conclusion or recommendation expressed in this material is that of the author(s) and the NRF does not accept any liability in this regard. Rodrigo Costas is partially funded by the South African DST-NRF Centre of Excellence in Scientometrics and Science, Technology and Innovation Policy (SciSTIP) (Grant No. 91488).
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van Schalkwyk, F., Dudek, J. & Costas, R. Communities of shared interests and cognitive bridges: the case of the anti-vaccination movement on Twitter. Scientometrics 125, 1499–1516 (2020). https://doi.org/10.1007/s11192-020-03551-0
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DOI: https://doi.org/10.1007/s11192-020-03551-0