Journal Impact Factors

Journal Impact Factor

Journal Impact Factor is from Journal Citation Report (JCR), a product of Thomson ISI (Institute for Scientific Information). 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. More details are described in Wikipedia and on the Thomson ISI website (

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Below are some of the sample lists available from other web sites..

Journal Impact Factor 2003:, part of Thomson, provides a behind-the-scenes look at the scientists, journals, institutions, nations, and papers selected by ISI Essential Science IndicatorsTM, updated each week. Links to some of these information are indexed in this webpage:

Journal and Academic Rankings