7 results
Search Results
2. In which fields are citations indicators of research quality?
- Author
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Thelwall, Mike, Kousha, Kayvan, Stuart, Emma, Makita, Meiko, Abdoli, Mahshid, Wilson, Paul, and Levitt, Jonathan
- Subjects
MEDICAL quality control ,PROFESSIONAL peer review ,STATISTICS ,CONFIDENCE intervals ,BIBLIOMETRICS ,CITATION analysis ,PEARSON correlation (Statistics) ,RESEARCH funding ,DATA analysis ,PERIODICAL articles ,INFORMATION storage & retrieval systems ,MEDICAL research ,IMPACT factor (Citation analysis) - Abstract
Citation counts are widely used as indicators of research quality to support or replace human peer review and for lists of top cited papers, researchers, and institutions. Nevertheless, the relationship between citations and research quality is poorly evidenced. We report the first large‐scale science‐wide academic evaluation of the relationship between research quality and citations (field normalized citation counts), correlating them for 87,739 journal articles in 34 field‐based UK Units of Assessment (UoA). The two correlate positively in all academic fields, from very weak (0.1) to strong (0.5), reflecting broadly linear relationships in all fields. We give the first evidence that the correlations are positive even across the arts and humanities. The patterns are similar for the field classification schemes of Scopus and Dimensions.ai, although varying for some individual subjects and therefore more uncertain for these. We also show for the first time that no field has a citation threshold beyond which all articles are excellent quality, so lists of top cited articles are not pure collections of excellence, and neither is any top citation percentile indicator. Thus, while appropriately field normalized citations associate positively with research quality in all fields, they never perfectly reflect it, even at high values. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
3. ResearchGate articles: Age, discipline, audience size, and impact.
- Author
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Thelwall, Mike and Kousha, Kayvan
- Subjects
BIBLIOGRAPHICAL citations ,BIBLIOGRAPHY ,CONFIDENCE intervals ,RESEARCH ,STATISTICS ,DATA analysis ,SOCIAL media ,CITATION analysis - Abstract
The large multidisciplinary academic social website ResearchGate aims to help academics to connect with each other and to publicize their work. Despite its popularity, little is known about the age and discipline of the articles uploaded and viewed in the site and whether publication statistics from the site could be useful impact indicators. In response, this article assesses samples of ResearchGate articles uploaded at specific dates, comparing their views in the site to their Mendeley readers and Scopus-indexed citations. This analysis shows that ResearchGate is dominated by recent articles, which attract about three times as many views as older articles. ResearchGate has uneven coverage of scholarship, with the arts and humanities, health professions, and decision sciences poorly represented and some fields receiving twice as many views per article as others. View counts for uploaded articles have low to moderate positive correlations with both Scopus citations and Mendeley readers, which is consistent with them tending to reflect a wider audience than Scopus-publishing scholars. Hence, for articles uploaded to the site, view counts may give a genuinely new audience indicator. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
4. Academic collaboration rates and citation associations vary substantially between countries and fields.
- Author
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Thelwall, Mike and Maflahi, Nabeil
- Subjects
AUTHORS ,AUTHORSHIP ,CONFIDENCE intervals ,INTERNATIONAL relations ,INTERPROFESSIONAL relations ,MEDICAL research ,SERIAL publications ,STATISTICS ,TEAMS in the workplace ,BIBLIOGRAPHIC databases ,DATA analysis ,PERIODICAL articles ,CITATION analysis ,IMPACT factor (Citation analysis) ,DESCRIPTIVE statistics - Abstract
Research collaboration is promoted by governments and research funders, but if the relative prevalence and merits of collaboration vary internationally then different national and disciplinary strategies may be needed to promote it. This study compares the team size and field normalized citation impact of research across all 27 Scopus broad fields in the 10 countries with the most journal articles indexed in Scopus 2008–2012. The results show that team size varies substantially by discipline and country, with Japan (4.2) having two‐thirds more authors per article than the United Kingdom (2.5). Solo authorship is rare in China (4%) but common in the United Kingdom (27%). While increasing team size associates with higher citation impact in almost all countries and fields, this association is much weaker in China than elsewhere. There are also field differences in the association between citation impact and collaboration. For example, larger team sizes in the Business, Management & Accounting category do not seem to associate with greater research impact, and for China and India, solo authorship associates with higher citation impact in this field. Overall, there are substantial international and field differences in the extent to which researchers collaborate and the extent to which collaboration associates with higher citation impact. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
5. Developing a scholar classification scheme from publication patterns in academic science: A cluster analysis approach.
- Author
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Gu, Xin and Blackmore, Karen L.
- Subjects
ACADEMIC achievement ,ALGORITHMS ,ANALYSIS of variance ,BEHAVIOR ,CLASSIFICATION ,CLUSTER analysis (Statistics) ,CONFIDENCE intervals ,INTERPROFESSIONAL relations ,LABOR productivity ,MEDICAL writing ,MEDICAL research ,STATISTICS ,SCHOLARLY communication ,DATA analysis ,DESCRIPTIVE statistics - Abstract
The impact of university rankings has driven scholars to increase productivity, and expanding collaboration has dramatically changed the publishing patterns in the academic publication system. The aim of this study was to develop a scholar classification scheme from publication patterns in academic science. Classification schemes are ways of describing groups that display different clusters of behaviors, approaches, or perspectives, and useful in the development of typologies. In this research, sample data are selected from three representative universities, considered a leading university, a middle‐tier university, and a noncomprehensive university. A final set of 11,427 effective scholars and their 284,128 journal publication records were used to develop the classification scheme via cluster analysis. The results identify six types of scholars, labeled as: singleton (8%), small‐team low performer (16%), small‐team high performer (17%), big‐team strategist (22%), free‐style follower (21%), and life‐time warrior (17%). These six scholar types demonstrate different approaches to publishing that can be used to understand both individual and research team performance across different institutional settings. Additionally, possible future work was identified that uses the scholar classification scheme to define the behavior for agents in an agent‐based model to simulate the strategic‐behavior‐driven academic publication system. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
6. Does research with statistics have more impact? The citation rank advantage of structural equation modeling.
- Author
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Thelwall, Mike and Wilson, Paul
- Subjects
CONFIDENCE intervals ,STATISTICS ,BIBLIOGRAPHIC databases ,DATA analysis ,STRUCTURAL equation modeling ,CITATION analysis ,STATISTICAL models - Abstract
Statistics are essential to many areas of research and individual statistical techniques may change the ways in which problems are addressed as well as the types of problems that can be tackled. Hence, specific techniques may tend to generate high-impact findings within science. This article estimates the citation advantage of a technique by calculating the average citation rank of articles using it in the issue of the journal in which they were published. Applied to structural equation modeling ( SEM) and four related techniques in 3 broad fields, the results show citation advantages that vary by technique and broad field. For example, SEM seems to be more influential in all broad fields than the 4 simpler methods, with one exception, and hence seems to be particularly worth adding to statistical curricula. In contrast, Pearson correlation apparently has the highest average impact in medicine but the least in psychology. In conclusion, the results suggest that the importance of a statistical technique may vary by discipline and that even simple techniques can help to generate high-impact research in some contexts. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
7. Who reads research articles? An altmetrics analysis of Mendeley user categories.
- Author
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Mohammadi, Ehsan, Thelwall, Mike, Haustein, Stefanie, and Larivière, Vincent
- Subjects
BIBLIOGRAPHICAL citations ,BIBLIOGRAPHY ,BIBLIOMETRICS ,CONFIDENCE intervals ,GRADUATE students ,MEDICAL literature ,RESEARCH ,SCIENCE ,STATISTICS ,BIBLIOGRAPHIC databases ,DATA analysis ,SOCIAL media - Abstract
Little detailed information is known about who reads research articles and the contexts in which research articles are read. Using data about people who register in Mendeley as readers of articles, this article explores different types of users of Clinical Medicine, Engineering and Technology, Social Science, Physics, and Chemistry articles inside and outside academia. The majority of readers for all disciplines were PhD students, postgraduates, and postdocs but other types of academics were also represented. In addition, many Clinical Medicine articles were read by medical professionals. The highest correlations between citations and Mendeley readership counts were found for types of users who often authored academic articles, except for associate professors in some sub-disciplines. This suggests that Mendeley readership can reflect usage similar to traditional citation impact if the data are restricted to readers who are also authors without the delay of impact measured by citation counts. At the same time, Mendeley statistics can also reveal the hidden impact of some research articles, such as educational value for nonauthor users inside academia or the impact of research articles on practice for readers outside academia. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
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