Clarivate Releases Journal Citation Reports 2021

The JCR is based on 2020 data compiled from the Web of Science Core Collection, the flagship collection of quality journals, books and conference proceedings in the world’s largest publisher-neutral global citation database. The structured data are curated by the global team of experts at Clarivate, who continuously evaluate and select the collections covered to ensure accuracy in journal impact evaluations. These insights enable researchers, publishers, editors, librarians and funders to explore the key drivers of a journal’s value for diverse audiences, making better use of the wide body of data and metrics available in the JCR.

Key moments for 2021:

  • This year’s edition includes more than 20,000 journals from 113 countries across five continents and 254 research categories in the sciences, social sciences, arts and humanities.
  • More than 14,000 journals have at least one Gold Open Access publication, with more than 4,600 being fully Open Access.
  • New expanded content: In total, 8,771 journals have been added to the JCR this year with the expansion of content across the full Web of Science Core Collection. The Arts & Humanities Citation Index (AHCI) and the Emerging Sources Citation Index (ESCI) will be included in the JCR for the first time this year, accounting for over 70% more content. With this addition the JCR’s coverage of journal literature will now reflect the full breadth of research covered in all the journals in the Web of Science Core Collection.
  • New Journal Citation Indicator: Developed by the Institute for Scientific Information (ISI) at Clarivate, this new metric represents the average category-normalized citation impact for papers published in the prior three-year period, providing a single journal-level metric that can be easily interpreted and compared across disciplines. The Journal Citation Indicator will be calculated for all journals in the Web of Science Core Collection – including those that do not have a Journal Impact Factor (JIF).
  • The 2021 JCR offers a revamped user interface by which the layered, rich data of the JCR can be easily and intuitively explored and visualized. New graphics improve the user experience with simpler, more direct searching while affording a deeper look into the data. The new interface is based on extensive user feedback and dual access to the new and old platforms will be available through the end of 2021.
  • The expanded coverage in this year’s release will introduce Early Access articles, reflecting the earliest availability of new research as it appears in the ‘version of record’ prior to official publication.

Clarivate monitors and excludes journals that demonstrate anomalous citation behavior including where there is evidence of excessive journal self-citation and citation stacking. The methodology and parameters for the effect of journal self-citation on JCR metrics were updated in 2020 to better account for discipline norms. The suppression of a journal from the JCR does not equate to a de-listing from the Web of Science Core Collection.



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