Wiley-Blackwell, the STM and scholarly business of John Wiley & Sons, Inc., US, has announced that two thirds of its journals (68.8% and 1,013 titles) have an Impact Factor, according to the revised Thomson ISI 2009 Journal Citation Reports (JCR). Of these ranked titles, nearly a quarter are in the top ten of their subject category (238 titles), whilst two thirds are in the top half of their category.
Wiley-Blackwell has 37 number 1 rankings. These titles represent the highest proportion of listed journals receiving the top rank of all the major journals publishers (those publishing 100 or more titles listed in the JCR).
The Wiley-Blackwell journal CA-A Cancer Journal for Clinicians remains in first place overall with an Impact Factor of 87.925. Fifty new titles were added to Wiley-Blackwell's listing in the JCR for 2009 in addition to one re-listed title.
Wiley-Blackwell's average Impact Factor saw a 3.7 percent rise last year. This year, the company's average was 2.125, compared to 2.052 last year. This is in the context of an overall 1.8 percent drop in average Impact Factor between JCR 2008 and 2009 across all publishers.
Overall, Wiley-Blackwell published 11.1 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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