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Suitability of Google Scholar as a source of scientific information and as a source of data for scientific evaluation—Review of the Literature

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  • Halevi, Gali
  • Moed, Henk
  • Bar-Ilan, Judit

Abstract

As Google Scholar (GS) gains more ground as free scholarly literature retrieval source it’s becoming important to understand its quality and reliability in terms of scope and content. Studies comparing GS to controlled databases such as Scopus, Web of Science (WOS) and others have been published almost since GS inception. These studies focus on its coverage, quality and ability to replace controlled databases as a source of reliable scientific literature. In addition, GS introduction of citations tracking and journal metrics have spurred a body of literature focusing on its ability to produce reliable metrics. In this article we aimed to review some studies in these areas in an effort to provide insights into GS ability to replace controlled databases in various subject areas. We reviewed 91 comparative articles from 2005 until 2016 which compared GS to various databases and especially Web of Science (WOS) and Scopus in an effort to determine whether GS can be used as a suitable source of scientific information and as a source of data for scientific evaluation. Our results show that GS has significantly expanded its coverage through the years which makes it a powerful database of scholarly literature. However, the quality of resources indexed and overall policy still remains known. Caution should be exercised when relying on GS for citations and metrics mainly because it can be easily manipulated and its indexing quality still remains a challenge.

Suggested Citation

  • Halevi, Gali & Moed, Henk & Bar-Ilan, Judit, 2017. "Suitability of Google Scholar as a source of scientific information and as a source of data for scientific evaluation—Review of the Literature," Journal of Informetrics, Elsevier, vol. 11(3), pages 823-834.
  • Handle: RePEc:eee:infome:v:11:y:2017:i:3:p:823-834
    DOI: 10.1016/j.joi.2017.06.005
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    References listed on IDEAS

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    1. Bornmann, Lutz & Marx, Werner & Schier, Hermann & Rahm, Erhard & Thor, Andreas & Daniel, Hans-Dieter, 2009. "Convergent validity of bibliometric Google Scholar data in the field of chemistry—Citation counts for papers that were accepted by Angewandte Chemie International Edition or rejected but published els," Journal of Informetrics, Elsevier, vol. 3(1), pages 27-35.
    2. Nabil Amara & Réjean Landry, 2012. "Counting citations in the field of business and management: why use Google Scholar rather than the Web of Science," Scientometrics, Springer;Akadémiai Kiadó, vol. 93(3), pages 553-581, December.
    3. Judit Bar-Ilan, 2010. "Citations to the “Introduction to informetrics” indexed by WOS, Scopus and Google Scholar," Scientometrics, Springer;Akadémiai Kiadó, vol. 82(3), pages 495-506, March.
    4. José Luis Ortega & Isidro F. Aguillo, 2014. "Microsoft academic search and Google scholar citations: Comparative analysis of author profiles," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 65(6), pages 1149-1156, June.
    5. Jesse Y. Chan & Kam C. Chan & Jamie Y. Tong & Feida (Frank) Zhang, 2016. "Using Google Scholar citations to rank accounting programs: a global perspective," Review of Quantitative Finance and Accounting, Springer, vol. 47(1), pages 29-55, July.
    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. Susanne Mikki, 2010. "Comparing Google Scholar and ISI Web of Science for Earth Sciences," Scientometrics, Springer;Akadémiai Kiadó, vol. 82(2), pages 321-331, February.
    8. Norris, Michael & Oppenheim, Charles, 2007. "Comparing alternatives to the Web of Science for coverage of the social sciences’ literature," Journal of Informetrics, Elsevier, vol. 1(2), pages 161-169.
    9. Lokman I. Meho & Kiduk Yang, 2007. "Impact of data sources on citation counts and rankings of LIS faculty: Web of science versus scopus and google scholar," Journal of the American Society for Information Science and Technology, Association for Information Science & Technology, vol. 58(13), pages 2105-2125, November.
    10. Massimo Franceschet, 2010. "A comparison of bibliometric indicators for computer science scholars and journals on Web of Science and Google Scholar," Scientometrics, Springer;Akadémiai Kiadó, vol. 83(1), pages 243-258, April.
    11. Judit Bar-Ilan, 2008. "Which h-index? — A comparison of WoS, Scopus and Google Scholar," Scientometrics, Springer;Akadémiai Kiadó, vol. 74(2), pages 257-271, February.
    12. 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.
    13. Anne‐Wil Harzing & Ron van der Wal, 2009. "A Google Scholar h‐index for journals: An alternative metric to measure journal impact in economics and business," Journal of the American Society for Information Science and Technology, Association for Information Science & Technology, vol. 60(1), pages 41-46, January.
    14. Goio Etxebarria & Mikel Gomez-Uranga, 2010. "Use of Scopus and Google Scholar to measure social sciences production in four major Spanish universities," Scientometrics, Springer;Akadémiai Kiadó, vol. 82(2), pages 333-349, February.
    15. Kayvan Kousha & Mike Thelwall & Somayeh Rezaie, 2011. "Assessing the citation impact of books: The role of Google Books, Google Scholar, and Scopus," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 62(11), pages 2147-2164, November.
    16. Anne-Wil Harzing, 2014. "A longitudinal study of Google Scholar coverage between 2012 and 2013," Scientometrics, Springer;Akadémiai Kiadó, vol. 98(1), pages 565-575, January.
    17. Lutz Bornmann & Andreas Thor & Werner Marx & Hermann Schier, 2016. "The application of bibliometrics to research evaluation in the humanities and social sciences: An exploratory study using normalized Google Scholar data for the publications of a research institute," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 67(11), pages 2778-2789, November.
    18. Moed, Henk F. & Bar-Ilan, Judit & Halevi, Gali, 2016. "A new methodology for comparing Google Scholar and Scopus," Journal of Informetrics, Elsevier, vol. 10(2), pages 533-551.
    19. Lorna Wildgaard, 2015. "A comparison of 17 author-level bibliometric indicators for researchers in Astronomy, Environmental Science, Philosophy and Public Health in Web of Science and Google Scholar," Scientometrics, Springer;Akadémiai Kiadó, vol. 104(3), pages 873-906, September.
    20. Kayvan Kousha & Mike Thelwall & Somayeh Rezaie, 2011. "Assessing the citation impact of books: The role of Google Books, Google Scholar, and Scopus," Journal of the American Society for Information Science and Technology, Association for Information Science & Technology, vol. 62(11), pages 2147-2164, November.
    21. Enrique Orduna-Malea & Juan M. Ayllón & Alberto Martín-Martín & Emilio Delgado López-Cózar, 2015. "Methods for estimating the size of Google Scholar," Scientometrics, Springer;Akadémiai Kiadó, vol. 104(3), pages 931-949, September.
    22. Hamid R. Jamali & Majid Nabavi, 2015. "Open access and sources of full-text articles in Google Scholar in different subject fields," Scientometrics, Springer;Akadémiai Kiadó, vol. 105(3), pages 1635-1651, December.
    23. Kayvan Kousha & Mike Thelwall, 2008. "Sources of Google Scholar citations outside the Science Citation Index: A comparison between four science disciplines," Scientometrics, Springer;Akadémiai Kiadó, vol. 74(2), pages 273-294, February.
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