Wiley-Blackwell, the STM and scholarly business of John Wiley & Sons, Inc., US, has announced that two-thirds of its journals (67 percent and 1,013 titles) have an impact factor according to the Thomson ISI 2009 Journal Citation Reports (JCR). This is claimed to be a higher proportion of the list than any other major journals publisher. Of these ranked titles, nearly a quarter (332 titles) is in the top 10 of their subject category whilst two-thirds are in the top half of their category.
Wiley-Blackwell has 36 number 1 rankings (from 33 titles, with Econometrica top of three, and Worldviews on Evidence-Based Nursing top of two categories respectively), the joint highest number of top ranked titles as a proportion of the list. The Wiley-Blackwell journal CA-A Cancer Journal for Clinicians remains in first place overall with an impact factor of 87.925.
Fifty-one new titles were added to Wiley-Blackwell's listing in the JCR for 2009 with four titles re-listed. The publisher's average impact factor saw a 5.3 percent rise last year. This year, the company's average was 2.1, compared to 2.0 last year. This is in the context of an overall 1.7 percent reduction in average impact factor between JCR 2008 and 2009. Overall, Wiley-Blackwell published 11.2 percent of the journals, 11.3 percent of the articles, and received 11.1 percent of the citations.
Impact factors are a metric that reflect the frequency that peer-reviewed journals are cited by researchers, making them an important tool for evaluating a journal's quality.
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