The 5-year synchronous impact factor for large Journal Citation Reports (JCR) subject areas

The STIMULATE 9, Group The 5-year synchronous impact factor for large Journal Citation Reports (JCR) subject areas. Cybermetrics: International Journal of Scientometrics, Informetrics and Bibliometrics, 2009, vol. 13, n. 1. [Journal article (Unpaginated)]


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English abstract

Using the largest JCR Thomson Reuters subject areas it is shown that the two-year and the five-year impact factor of journals lead statistically to the same ranking per category. This observation holds for top journals as well as lower level journals. Yet in a majority of cases the 5-year impact factor is larger than the 2-year one. A special case was observed in which one article influenced macro statistics of a whole journal subject category.

Item type: Journal article (Unpaginated)
Keywords: synchronous impact factors, journal rankings, Wilcoxon matched-pairs signed-ranks test
Subjects: B. Information use and sociology of information > BB. Bibliometric methods
Depositing user: Stephen Alayon
Date deposited: 03 May 2010
Last modified: 02 Oct 2014 12:16


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