PHILADELPHIA and LONDON, July 1 /PRNewswire/ --

- Highly Anticipated Metrics Include Updated Journal Impact Factors

The Scientific business of Thomson Reuters today announced the release of the 2007 Journal Citation Reports, available to subscribers of the JCR. The metrics in the JCR have come to define journal performance across disciplines and institutions worldwide.

JCR presents quantitative data that provide a systematic, objective way to evaluate the world's leading journals and their impact and influence in the global research community. In addition to the benefits these metrics offer to individuals and institutions, JCR and Impact Factors may be used to benchmark performance against competitors to create better market strategy.

"These data are recognized as accurate and reliable, allowing the research community to make strategic decisions confidently," said James Pringle, vice president of product development for the Scientific business of Thomson Reuters. "However, it's important to note that citation metrics should support -- but never substitute for -- informed peer judgment in research evaluation."

The Journal Citation Reports includes for each journal: -- Count of scholarly items published in 2007. -- Total number of citations to the journal in 2007. -- Immediacy index: the average number of times a journal's current articles are cited in the year of publication. -- Impact Factor: the average number of citations in 2007 to articles a journal published in the previous two years. -- Cited and citing journal data: the citation network that identifies publications exchanging citations with each journal, and defining its role in the literature.

JCR includes virtually all subject specialties in science, technology, and the social sciences as well as over 1,400 publishers from 66 nations. For more information on Journal Citation Reports, please visit http://scientific.thomsonreuters.com/products/jcr/.

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 thomsonreuters.com.

Web site: http://www.thomsonfinancial.com http://scientific.thomsonreuters.com/products/jcr

Sue Besaw, Manager, PR & Communications, Scientific, Thomson Reuters, +1-215-823-1840, susan.besaw@thomsonreuters.com