Journal self-citation rates in ecological sciences
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Impact factors are a widely accepted means for the assessment of journal quality. However, journal editors have possibilities to influence the impact factor of their journals, for example, by requesting authors to cite additional papers published recently in that journal thus increasing the self-citation rate. I calculated self-citation rates of journals ranked in the Journal Citation Reports of ISI in the subject category “Ecology” (n = 107). On average, self citation was responsible for 16.2 ± 1.3% (mean ± SE) of the impact factor in 2004. The self-citation rates decrease with increasing journal impact, but even high impact journals show large variation. Six journals suspected to request for additional citations showed high self-citation rates, which increased over the last seven years. To avoid further deliberate increases in self-citation rates, I suggest to take journal-specific self-citation rates into account for journal rankings.
KeywordsImpact Factor Citation Rate Journal Citation Report Journal Impact Factor Immediacy Index
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- Adam, D. (2002), The counting house. Nature, 415: 726–729.Google Scholar
- ANON (2001), Statgraphics Plus for Windows, ver. 5.1. Manugistics, Rockville, MD, USA.Google Scholar
- ANON (2004), R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. (URL http://www.R-project.org/)
- Baylis, M., Gravenor, M., Kao, R. (1999), Sprucing up one’s impact factor. Nature, 401: 321–322.Google Scholar
- Editor’s Note (2005), Trends in Ecology and Evolution, 20: 157.Google Scholar
- Garfield, E. (1999), Journal impact factor: A brief review. Canadian Medical Association Journal, 161: 979–980.Google Scholar
- Hemmingsson, A., Mygind, T., Skjennald, A., Edgren, J. (2002a), Manipulation of impact factors by editors of scientific journals. American Journal of Roentgenology, 178: 767.Google Scholar
- Kurmis, A. P. (2003), Understanding the limitations of the journal impact factor. Journal of Bone and Joint Surgery-American Volume, 85: 2449–2454.Google Scholar
- Rogers, L. F. (2002), From the editor’s notebook; impact factor: the numbers game. American Journal of Roentgenology, 178: 541–542.Google Scholar