Journal Impact Factors are generally accepted numbers used for ranking, categorizing, and comparing scholarly journals within an academic discipline. A journal's impact factor is a measure of the frequency with which the "average article" in that journal has been cited within a set period of time. Journals assigned the highest impact factors are perceived to have more influence on the discipline than those journals assigned lower numbers.

The Journal Citation Reports (JCR), published by ISI, may be consulted to determine the annual JCR impact factor for specific journals or the rank of several journals within an academic disciplne. The JCR impact factor is a ratio between total citations and recent citable items published. The assigned number is determined by dividing the number of current year citations by the total applicable items published in that journal during the previous two years.



Journal Citation Reports (2008+) is availabe online; see the Resources A-Z list from the libraries' homepage. Some earlier years are available from the Media Library, select earlier years are available in print or microformat - check the UWM Libraries catalog for details.
(Media-CD) Z 699 .5 .S3 J68x         Science edition (1999; 2003-2007)
(Media-CD) Z 699 .5 .S65 S544x     Social Sciences edition (1999; 2003-2005;

The CD-ROMs require software that is loaded on stand-alone computers in the Media area; they will not work on other computers.

See "Cited Reference Searching" or "Research Databases for Cited Reference Searching."

lk/lb 04/02/08; 05/18/2011

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