Thomson Reuters Releases New Journal Citation Reports(R)

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

    PHILADELPHIA and LONDON, Jan. 21 /PRNewswire/ -- The Scientific business
of Thomson Reuters today announced an enhanced release of the Journal Citation
Reports(R), available to subscribers of the JCR(R) 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(R) now includes the Eigenfactor(TM)
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
        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

    About Thomson Reuters
    Thomson Reuters is the world's leading source of intelligent information
for businesses and professionals.  We combine industry expertise with
innovative technology to deliver critical information to leading decision
makers in the financial, legal, tax and accounting, scientific, healthcare and
media markets, powered by the world's most trusted news organization. With
headquarters in New York and major operations in London and Eagan, Minnesota,
Thomson Reuters employs more than 50,000 people in 93 countries. For more
information, go to


For further information:

For further information: Sue Besaw, Manager, PR & Communications of
Thomson Scientific, +1-215-823-1840,

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