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Thomson Reuters Releases New Journal Citation Reports®


Inclusion of Eigenfactor™ Metrics Creates Multi-Faceted View of Journal Performance

Philadelphia, PA, London, UK. – The Scientific business of Thomson Reuters today announced an enhanced release of the Journal Citation Reports®, available to subscribers of the JCR® Web. The recognized authority for evaluating journals, JCR presents quantitative data that supports a systematic, objective review of the world’s leading journals and their impact and influence in the global research community.

In addition to Impact Factor, the JCR® now includes the Eigenfactor™ Metrics, which use citing journal data from the entire JCR file to reflect the prestige and citation influence of journals by considering scholarly literature as a network of journal-to-journal relationships.

“Including the Eigenfactor Metrics in the JCR provides a new way to assess a journal’s prestige. This is an exciting step forward in the science of journal evaluation,” said Carl Bergstrom, Associate Professor at the University of Washington.

The JCR summarizes citations from more than 10,000 journals and proceedings in the sciences and social sciences indexed in the Web of Science database. Nearly 8,000 journals appear in the 2007 JCR, with detailed reports of their citation performance, their citation network, and the count and type of materials published.

“In this competitive market, publishers count on the accurate and reliable metrics found in the JCR,” said James Pringle, vice president of product development for the Scientific business of Thomson Reuters. “The JCR provides a systematic way to evaluate leading journals – and allow publishers to understand their journal’s place in the world.”

In addition to the collaboration with the University of Washington to include Eigenfactor Metrics, the Journal Citation Reports now include the following new features:

• Five-Year Impact Factor - provides a broader range of citation activity for a more informative snapshot over time.
• Journal “Self Citations” – An analysis of journal self citations and their contribution to the Journal Impact Factor calculation.
• Graphic Displays of Impact Factor “Box Plots” - A graphic interpretation of how a journal ranks in different categories.
• Rank-in-Category Tables for Journals Covering Multiple Disciplines - Allows a journal to be seen in the context of multiple categories at a glance rather than only a single one.

The JCR includes virtually all subject specialties in science, technology, and the social sciences as well as more than 1,400 publishers from 66 nations. For more information on the Journal Citation Reports, please visit


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