The Journal Citation Report (JCR®) for 2010 has just been released by Thomson Reuters. The JCR provides quantitative tools for ranking, evaluating, categorizing, and comparing journals. The Impact Factor is one of these; it is a measure of the frequency with which the “average article” in a journal has been cited in a particular year or period. The annual JCR Impact Factor is a ratio between citations and recent citable items published. For example, the 2010 Impact Factor is citations received in 2010 to all articles published in 2009 and 2008, divided by the number of “source items”...

You do not currently have access to this article.