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Author: search.filters.author.Thelwall, M.Subject: search.filters.subject.Citation Analysis

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  • Item type:Publication,
    No evidence of citation bias as a determinant of STEM gender disparities in US biochemistry, genetics and molecular biology research Open PDF 
    (2019)
    Thelwall, M.
    ;
    Nevill, T.
    The lack of females in many Science Technology, Engineering and Mathematics (STEM) subjects in the USA is an ongoing concern, with many initiatives attempting to redress this imbalance. Some life sciences are apparently areas of relatively good practice, with higher proportions of female researchers than most other STEM subjects. This paper assesses gender differences in research contributions to 14 biochemistry, genetics or molecular biology specialisms in the USA 1996–2014/8, seeking evidence of trends in publishing and citation impact that may give insights into female success. With four exceptions (biochemistry, biophysics, biotechnology, and structural biology), the fields achieved or maintained at least 40% female first authors by 2018, with developmental biology and endocrinology both attaining female first author majorities. A regression analysis found close to gender parity overall in citation impact but a small male first author citation advantage in more fields than the opposite: an up to 3% increase in logged citation ratio to the world mean. This was partly due to males first authoring with larger teams. Fields with relatively many females did not favour female-led research with more citations, however. © 2019, Akadémiai Kiadó, Budapest, Hungary.
  • Item type:Publication,
    Small female citation advantages for US journal articles in medicine Open PDF 
    (2022)
    Thelwall, M.
    ;
    Maflahi, N.
    Female under-representation continues in senior roles within academic medicine, potentially influenced by a perception that female research has less citation impact. This article provides systematic evidence of (a) female participation rates from the perspective of published journal articles in 46 Scopus medical subject categories 1996–2018 and (b) gender differences in citation rates 1996–2014. The results show female proportion increases 1996–2018 in all fields and a female majority of first-authored articles in two-fifths of categories, but substantial differences between fields. A paper is 7.3 times more likely to have a female first author in Obstetrics and Gynaecology than in Orthopaedics and Sports Medicine. Only three fields had a female last author majority by 2018, a probable side effect of ongoing problems with appointing female leaders. Female first-authored research tended to be more cited than male first-authored research in most fields (59%), although with a maximum difference of only 5.1% (log-transformed normalised citations). In contrast, male last-authored research tends to be more cited than female last-authored research, perhaps due to cases where a senior male has attracted substantial funding for a project. These differences increase if team sizes are not accounted for in the calculations. Since female first-authored research is cited slightly more than male first-authored research, properly analysed bibliometric data considering career gaps should not disadvantage female candidates for senior roles. © The Author(s) 2020.
  • Item type:Publication,
    Do females create higher impact research? Scopus citations and Mendeley readers for articles from five countries Open PDF 
    (2018)
    Thelwall, M.
    There are known gender imbalances in participation in scientific fields, from female dominance of nursing to male dominance of mathematics. It is not clear whether there is also a citation imbalance, with some claiming that male-authored research tends to be more cited. No previous study has assessed gender differences in the readers of academic research on a large scale, however. In response, this article assesses whether there are gender differences in the average citations and/or Mendeley readers of academic publications. Field normalised logged Scopus citations and Mendeley readers from mid-2018 for articles published in 2014 were investigated for articles with first authors from India, Spain, Turkey, the UK and the USA in up to 251 fields with at least 50 male and female authors. Although female-authored research is less cited in Turkey (-4.0%) and India (-3.6%), it is marginally more cited in Spain (0.4%), the UK (0.4%), and the USA (0.2%). Female-authored research has fewer Mendeley readers in India (-1.1%) but more in Spain (1.4%), Turkey (1.1%), the UK (2.7%) and the USA (3.0%). Thus, whilst there may be little practical gender difference in citation impact in countries with mature science systems, the higher female readership impact suggests a wider audience for female-authored research. The results also show that the conclusions from a gender analysis depend on the field normalisation method. A theoretically informed decision must therefore be made about which normalisation to use. The results also suggest that arithmetic mean-based field normalisation is favourable to males. © 2018 Elsevier Ltd. All rights reserved.