Journal Citation Reports® Notices

Welcome to Journal Citation Reports®, a unique Web-based research tool that allows you to evaluate and compare journals using citation data drawn from approximately 12,000 scholarly and technical journals and conference proceedings from more than 3,300 publishers in over 60 countries. Journal Citation Reports is the only source of citation data on journals, and includes virtually all specialties in the areas of science, technology, and social sciences.

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• 2010 JCR Data Release
• 2010 JCR Data Update
• New Metrics and Features
• Editorial Information
• How to Cite JCR
• Browser-Related Issues
• Thomson Reuters Customer Technical Support

2010 JCR Data Release

This release of Journal Citation Reports provides 2010 data. The 2011 edition of Journal Citation Reports will be made available mid-year 2012.

Regional Content Expansion

In the past three years, more than 1,600 journals that focus on topics of regional interest have been added to Web of Science. Data used to calculate JCR metrics include citations from these journals. In addition, several of these titles are included in the list of new titles available in the 2010 JCR. To get information about the new regional content in JCR, go to http://isiwebofknowledge.com/products_tools/multidisciplinary/webofscience/contentexp/.

To access the list of new titles, go to http://researchanalytics.thomsonreuters.com/m/pdfs/jcr-new-titles_cs5.pdf.

To access the complete list of JCR titles, go to http://researchanalytics.thomsonreuters.com/m/pdfs/jcr-full-titles2010_cs5.pdf.

2010 JCR Data Updates

After JCR data were published in June 2011, we were able to obtain materials whose absence had prevented journals from receiving a Journal Impact Factor, as well as to correct a small number of anomalous data points. A description of the extent and type of updates is available on the Citation Impact Center blog at: http://community.thomsonreuters.com/t5/Citation-Impact-Center/Change-is-good/ba-p/23763.

The 2010 JCR Web data have now fully incorporated these updates.

New Metrics and Features

• 5-Year Journal Impact Factor is the average number of times articles from a journal published in the past five years have been cited in the JCR year. For journals in subjects where citation activity continues to rise through several years, this metric allows more of their total citation activity to be included in a critical performance metric.
• Eigenfactor™ Metrics, comprising the Eigenfactor™ Score and Article Influence™ Score, use JCR citation data to assess the influence of a journal in relation to other journals. These metrics, based on five years of citation activity, consider not just the count of citations but the structure of the citation network. Eigenfactor Metrics are available only for JCR years 2007 and later.
• Journal Self Cites provides analyses of journal self citations and their contribution to the Journal Impact Factor calculation.
• Rank-in-Category reveals the ranking of a journal in its subject categories based on the Journal Impact Factor. An accompanying Impact Factor box plot depicts the distribution of Impact Factors for all journals in a category.

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Editorial Information

Title Changes

• The 2009 JCR data (Science and Social Sciences editions combined) contain 38 journals with new titles in 2010 resulting from a publication changing title, merging with another title or splitting into two or more separate titles. 
• Because the Journal Impact Factor calculation uses two prior publication years, titles that were altered in 2008 are also affected.  38 such titles are still visible in the 2009 Journal Citation Reports.
• To see a full list of 2008 and 2009 title changes:
  • From the Welcome page, if you select View a group of journals…, Search for a specific journal, or View all journals, the resulting screen will contain a link to Journal Title Changes that are specific to the edition and year of the JCR in which you are working. 
  • In addition, any individual journal record that is affected by a year 2008 or year 2009 title change will contain a title changes link in the Full Journal Record in the Journal Information section.  This will note the specific nature of the change as well as the other title/titles involved. 

Title Suppressions

Due to the significant effect of journal self-citations on their Impact Factors, metrics for a number of titles are not published in the 2010 JCR.  Suppressed titles were found to have extremely high journal self-citation rates. This level of journal self-citation  resulted in a significant effect on the rank of the journal in its category, so that the rank does not accurately reflect the journal’s overall citation performance. The Journal Impact Factor provides an important and objective measure of a journal’s participation in the scholarly literature, and its distortion by journal self-citation is a serious matter. It is for this reason that the following journals do not  appear in the 2010 JCR.  JCR Staff will monitor these journals going forward and the titles will be re-listed in a future edition of JCR when the problem of excessive self citations has been resolved.  In the meantime, coverage of these journals in Web of Science and other Thomson Reuters products is not changed.

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How to Cite JCR

When citing  Journal Citation Reports, be sure to include the following information:

• The JCR data year that you are referencing.
• The full name, Journal Citation Reports. Include the registered trademark symbol.
• The edition: Science Edition or Social Sciences Edition. (The edition is not essential.)
• Name of the publisher, Thomson Reuters.
• Copyright year. The copyright year appears at the bottom of every page in JCR.
  

Examples:

2008 Journal Citation Reports® Science Edition (Thomson Reuters, 2009)

2007 Journal Citation Reports® Social Sciences Edition (Thomson Reuters, 2008)

2005 Journal Citation Reports® (Thomson Reuters, 2006)

Browser-Related Issues

System Requirements

Thomson Reuters supports the following operating systems and browsers:

Thomson Reuters Customer Technical Support

If you have questions about using our products or about your access to them, please visit our support page at http://science.thomsonreuters.com/support/. This page has links to our support Knowledgebase, the local telephone numbers and hours of operation. When you click on the Open eTicket tab, your issue will be immediately routed to your local support team.

Please go to http://science.thomsonreuters.com/techsupport/datachange/ to request changes to the database.

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This file was last updated on 09/28/2011

Thomson Reuters and its product names and acronyms used herein are trademarks, registered trademarks, and service marks used under license. Thomson Reuters has no proprietary interest in the marks or names of others. Eigenfactor™ Metrics, Eigenfactor™ Score, Article Influence™ Score are Licensed Marks used with permission from the University of Washington.

Copyright© 2011 The Thomson Reuters Corporation