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The correlation between scientific collaboration and citation count at the paper level: a meta-analysis

Author

Listed:
  • Hongquan Shen

    (Nanjing University)

  • Juan Xie

    (Nanjing University)

  • Jiang Li

    (Nanjing University)

  • Ying Cheng

    (Nanjing University)

Abstract

Collaboration has been widely investigated as a prevalent research activity. However, no consensus has been reached about the relationship between scientific collaboration and citation count. Therefore, this study aimed to comprehensively examine the strength and consistency of this relationship, using meta-analytic methods and measuring scientific collaboration by co-authorship. After the literature search and initial selection, 361 relevant papers were found. Based on the inclusion and exclusion criteria, 92 papers involving 340 effect sizes were included. A random-effect meta-analysis showed a significant positive and weak correlation between scientific collaboration and citation count (r = 0.146). Tests of publication bias and heterogeneity revealed that the result was reliable. In addition, disciplines, countries, document types and citation sources were found to influence the correlation as moderators significantly. Practical recommendations for research administrators and researchers were provided, including encouraging collaboration and maintaining a cost-benefit balance in collaboration.

Suggested Citation

  • Hongquan Shen & Juan Xie & Jiang Li & Ying Cheng, 2021. "The correlation between scientific collaboration and citation count at the paper level: a meta-analysis," Scientometrics, Springer;Akadémiai Kiadó, vol. 126(4), pages 3443-3470, April.
  • Handle: RePEc:spr:scient:v:126:y:2021:i:4:d:10.1007_s11192-021-03888-0
    DOI: 10.1007/s11192-021-03888-0
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    1. Natsuo Onodera & Fuyuki Yoshikane, 2015. "Factors affecting citation rates of research articles," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 66(4), pages 739-764, April.
    2. Sei‐Ching Joanna Sin, 2011. "International coauthorship and citation impact: A bibliometric study of six LIS journals, 1980–2008," Journal of the American Society for Information Science and Technology, Association for Information Science & Technology, vol. 62(9), pages 1770-1783, September.
    3. Christian Lachance & Steve Poirier & Vincent Larivière, 2014. "The kiss of death? The effect of being cited in a review on subsequent citations," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 65(7), pages 1501-1505, July.
    4. Benoît Godin & Yves Gingras, 2000. "Impact of collaborative research on academic science," Science and Public Policy, Oxford University Press, vol. 27(1), pages 65-73, February.
    5. Ali Gazni & Fereshteh Didegah, 2011. "Investigating different types of research collaboration and citation impact: a case study of Harvard University’s publications," Scientometrics, Springer;Akadémiai Kiadó, vol. 87(2), pages 251-265, May.
    6. John Mingers & Evangelia A. E. C. G. Lipitakis, 2010. "Counting the citations: a comparison of Web of Science and Google Scholar in the field of business and management," Scientometrics, Springer;Akadémiai Kiadó, vol. 85(2), pages 613-625, November.
    7. Radhamany Sooryamoorthy, 2017. "Do types of collaboration change citation? A scientometric analysis of social science publications in South Africa," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(1), pages 379-400, April.
    8. Bammer, Gabriele, 2008. "Enhancing research collaborations: Three key management challenges," Research Policy, Elsevier, vol. 37(5), pages 875-887, June.
    9. Vincent Larivière & Yves Gingras & Cassidy R. Sugimoto & Andrew Tsou, 2015. "Team size matters: Collaboration and scientific impact since 1900," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 66(7), pages 1323-1332, July.
    10. Pei-Shan Chi & Wolfgang Glänzel, 2017. "An empirical investigation of the associations among usage, scientific collaboration and citation impact," Scientometrics, Springer;Akadémiai Kiadó, vol. 112(1), pages 403-412, July.
    11. Abdulnasser Hatemi-J & Ahdi N. Ajmi & Ghassen El Montasser & Roula Inglesi-Lotz & Rangan Gupta, 2016. "Research output and economic growth in G7 countries: new evidence from asymmetric panel causality testing," Applied Economics, Taylor & Francis Journals, vol. 48(24), pages 2301-2308, May.
    12. Alfonso Ibáñez & Concha Bielza & Pedro Larrañaga, 2013. "Relationship among research collaboration, number of documents and number of citations: a case study in Spanish computer science production in 2000–2009," Scientometrics, Springer;Akadémiai Kiadó, vol. 95(2), pages 689-716, May.
    13. Toluwase Asubiaro, 2019. "How collaboration type, publication place, funding and author’s role affect citations received by publications from Africa: A bibliometric study of LIS research from 1996 to 2015," Scientometrics, Springer;Akadémiai Kiadó, vol. 120(3), pages 1261-1287, September.
    14. Pardeep Sud & Mike Thelwall, 2016. "Not all international collaboration is beneficial: The Mendeley readership and citation impact of biochemical research collaboration," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 67(8), pages 1849-1857, August.
    15. Wen-Yau Cathy Lin & Mu-Hsuan Huang, 2012. "The relationship between co-authorship, currency of references and author self-citations," Scientometrics, Springer;Akadémiai Kiadó, vol. 90(2), pages 343-360, February.
    16. Juan Xie & Kaile Gong & Ying Cheng & Qing Ke, 2019. "The correlation between paper length and citations: a meta-analysis," Scientometrics, Springer;Akadémiai Kiadó, vol. 118(3), pages 763-786, March.
    17. Christoph Bartneck & Jun Hu, 2010. "The fruits of collaboration in a multidisciplinary field," Scientometrics, Springer;Akadémiai Kiadó, vol. 85(1), pages 41-52, October.
    18. Wah Yun Low & Kwan Hoong Ng & M. A. Kabir & Ai Peng Koh & Janaki Sinnasamy, 2014. "Trend and impact of international collaboration in clinical medicine papers published in Malaysia," Scientometrics, Springer;Akadémiai Kiadó, vol. 98(2), pages 1521-1533, February.
    19. Sei-Ching Joanna Sin, 2011. "International coauthorship and citation impact: A bibliometric study of six LIS journals, 1980–2008," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 62(9), pages 1770-1783, September.
    20. Francisco José Acedo & Carmen Barroso & Cristóbal Casanueva & José Luis Galán, 2006. "Co‐Authorship in Management and Organizational Studies: An Empirical and Network Analysis," Journal of Management Studies, Wiley Blackwell, vol. 43(5), pages 957-983, July.
    21. Thelwall, Mike & Sud, Pardeep, 2014. "No citation advantage for monograph-based collaborations?," Journal of Informetrics, Elsevier, vol. 8(1), pages 276-283.
    22. Franceschet, Massimo & Costantini, Antonio, 2010. "The effect of scholar collaboration on impact and quality of academic papers," Journal of Informetrics, Elsevier, vol. 4(4), pages 540-553.
    23. Zaida Chinchilla-Rodríguez & Maria Benavent-Pérez & Félix Moya-Anegón & Sandra Miguel, 2012. "International collaboration in Medical Research in Latin America and the Caribbean (2003–2007)," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 63(11), pages 2223-2238, November.
    24. Wagner, Caroline S. & Whetsell, Travis A. & Mukherjee, Satyam, 2019. "International research collaboration: Novelty, conventionality, and atypicality in knowledge recombination," Research Policy, Elsevier, vol. 48(5), pages 1260-1270.
    25. Blake M. Louscher & Veerasathpurush Allareddy & Satheesh Elangovan, 2019. "Predictors of Citations of Systematic Reviews in Oral Implantology: A Cross-Sectional Bibliometric Analysis," SAGE Open, , vol. 9(1), pages 21582440198, March.
    26. Tahamtan, Iman & Bornmann, Lutz, 2018. "Core elements in the process of citing publications: Conceptual overview of the literature," Journal of Informetrics, Elsevier, vol. 12(1), pages 203-216.
    27. Abramo, Giovanni & D’Angelo, Ciriaco Andrea, 2015. "The relationship between the number of authors of a publication, its citations and the impact factor of the publishing journal: Evidence from Italy," Journal of Informetrics, Elsevier, vol. 9(4), pages 746-761.
    28. Wah Yun Low & Kwan Hoong Ng & M. A. Kabir & Ai Peng Koh & Janaki Sinnasamy, 2014. "Erratum to: Trend and impact of international collaboration in clinical medicine papers published in Malaysia," Scientometrics, Springer;Akadémiai Kiadó, vol. 100(2), pages 607-607, August.
    29. Katz, J. Sylvan & Martin, Ben R., 1997. "What is research collaboration?," Research Policy, Elsevier, vol. 26(1), pages 1-18, March.
    30. Ronald Rousseau & Jielan Ding, 2016. "Does international collaboration yield a higher citation potential for US scientists publishing in highly visible interdisciplinary Journals?," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 67(4), pages 1009-1013, April.
    31. Hanna-Mari Puuska & Reetta Muhonen & Yrjö Leino, 2014. "International and domestic co-publishing and their citation impact in different disciplines," Scientometrics, Springer;Akadémiai Kiadó, vol. 98(2), pages 823-839, February.
    32. Didegah, Fereshteh & Thelwall, Mike, 2013. "Which factors help authors produce the highest impact research? Collaboration, journal and document properties," Journal of Informetrics, Elsevier, vol. 7(4), pages 861-873.
    33. Stojan Pečlin & Primož Južnič & Rok Blagus & Mojca Čižek Sajko & Janez Stare, 2012. "Effects of international collaboration and status of journal on impact of papers," Scientometrics, Springer;Akadémiai Kiadó, vol. 93(3), pages 937-948, December.
    34. Barry Bozeman & Daniel Fay & Catherine Slade, 2013. "Research collaboration in universities and academic entrepreneurship: the-state-of-the-art," The Journal of Technology Transfer, Springer, vol. 38(1), pages 1-67, February.
    35. He, Zi-Lin & Geng, Xue-Song & Campbell-Hunt, Colin, 2009. "Research collaboration and research output: A longitudinal study of 65 biomedical scientists in a New Zealand university," Research Policy, Elsevier, vol. 38(2), pages 306-317, March.
    36. Satya Ranjan Sahu & Krushna Chandra Panda, 2014. "Does the multi-authorship trend influence the quality of an article?," Scientometrics, Springer;Akadémiai Kiadó, vol. 98(3), pages 2161-2168, March.
    37. Iman Tahamtan & Askar Safipour Afshar & Khadijeh Ahamdzadeh, 2016. "Factors affecting number of citations: a comprehensive review of the literature," Scientometrics, Springer;Akadémiai Kiadó, vol. 107(3), pages 1195-1225, June.
    38. Dag W. Aksnes, 2003. "A macro study of self-citation," Scientometrics, Springer;Akadémiai Kiadó, vol. 56(2), pages 235-246, February.
    39. Bozeman, Barry & Corley, Elizabeth, 2004. "Scientists' collaboration strategies: implications for scientific and technical human capital," Research Policy, Elsevier, vol. 33(4), pages 599-616, May.
    40. María Bordons & Javier Aparicio & Rodrigo Costas, 2013. "Heterogeneity of collaboration and its relationship with research impact in a biomedical field," Scientometrics, Springer;Akadémiai Kiadó, vol. 96(2), pages 443-466, August.
    41. Talke, Katrin & Salomo, Søren & Kock, Alexander, 2011. "Top ManagementTeam Diversity and Strategic Innovation Orientation: The Relationship and Consequences for Innovativeness and Performance," Publications of Darmstadt Technical University, Institute for Business Studies (BWL) 63286, Darmstadt Technical University, Department of Business Administration, Economics and Law, Institute for Business Studies (BWL).
    42. Bornmann, Lutz & Schier, Hermann & Marx, Werner & Daniel, Hans-Dieter, 2012. "What factors determine citation counts of publications in chemistry besides their quality?," Journal of Informetrics, Elsevier, vol. 6(1), pages 11-18.
    43. Radhamany Sooryamoorthy, 2009. "Do types of collaboration change citation? Collaboration and citation patterns of South African science publications," Scientometrics, Springer;Akadémiai Kiadó, vol. 81(1), pages 177-193, October.
    44. Anne-Wil Harzing & Satu Alakangas, 2016. "Google Scholar, Scopus and the Web of Science: a longitudinal and cross-disciplinary comparison," Scientometrics, Springer;Akadémiai Kiadó, vol. 106(2), pages 787-804, February.
    45. Guillermo Armando Ronda-Pupo & Carlos Díaz-Contreras & Guillermo Ronda-Velázquez & Jorge Carlos Ronda-Pupo, 2015. "The role of academic collaboration in the impact of Latin-American research on management," Scientometrics, Springer;Akadémiai Kiadó, vol. 102(2), pages 1435-1454, February.
    46. Shaun Goldfinch & Tony Dale & Karl DeRouen, 2003. "Science from the periphery: Collaboration, networks and 'Periphery Effects' in the citation of New Zealand Crown Research Institutes articles, 1995-2000," Scientometrics, Springer;Akadémiai Kiadó, vol. 57(3), pages 321-337, July.
    47. Maksym Polyakov & Serhiy Polyakov & Md Sayed Iftekhar, 2017. "Does academic collaboration equally benefit impact of research across topics? The case of agricultural, resource, environmental and ecological economics," Scientometrics, Springer;Akadémiai Kiadó, vol. 113(3), pages 1385-1405, December.
    48. Abramo, Giovanni & Cicero, Tindaro & D’Angelo, Ciriaco Andrea, 2011. "Assessing the varying level of impact measurement accuracy as a function of the citation window length," Journal of Informetrics, Elsevier, vol. 5(4), pages 659-667.
    49. Lutz Bornmann & Hans‐Dieter Daniel, 2008. "Selecting manuscripts for a high‐impact journal through peer review: A citation analysis of communications that were accepted by Angewandte Chemie International Edition, or rejected but published else," Journal of the American Society for Information Science and Technology, Association for Information Science & Technology, vol. 59(11), pages 1841-1852, September.
    50. Lutz Bornmann & Hans‐Dieter Daniel, 2007. "Multiple publication on a single research study: Does it pay? The influence of number of research articles on total citation counts in biomedicine," Journal of the American Society for Information Science and Technology, Association for Information Science & Technology, vol. 58(8), pages 1100-1107, June.
    51. Cummings, Jonathon N. & Kiesler, Sara, 2007. "Coordination costs and project outcomes in multi-university collaborations," Research Policy, Elsevier, vol. 36(10), pages 1620-1634, December.
    52. Nick Haslam & Lauren Ban & Leah Kaufmann & Stephen Loughnan & Kim Peters & Jennifer Whelan & Sam Wilson, 2008. "What makes an article influential? Predicting impact in social and personality psychology," Scientometrics, Springer;Akadémiai Kiadó, vol. 76(1), pages 169-185, July.
    53. Isabel Iribarren-Maestro & María Luisa Lascurain-Sánchez & Elías Sanz-Casado, 2009. "Are multi-authorship and visibility related? Study of ten research areas at Carlos III University of Madrid," Scientometrics, Springer;Akadémiai Kiadó, vol. 79(1), pages 191-200, April.
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