Journal impact factor calculation
nounPronunciation: /ˈdʒɜːrnəl ˈɪmpækt ˈfæktər ˌkælkjəˈleɪʃən/
The quantitative method used to measure a journal's average citation frequency over a defined period, calculated by dividing total citations to articles published in the previous two years by the number of citable articles published in those years. This metric influences journal prestige and author submission decisions.
Plain English
A mathematical score showing how often articles published in a journal are cited by other researchers, used to rank journal importance.
Etymology & History
Usage
"The journal's impact factor calculation showed a 12% increase compared to the previous year."
Style guide notes: Always specify the calculation year and source; note that impact factors may vary between databases.
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Frequently Asked Questions
Who calculates impact factors and when?
Clarivate Analytics calculates impact factors annually based on Web of Science data.
Are there alternatives to impact factor metrics?
Yes, alternatives include h-index, CiteScore, and journal citation indicators.
Why Test Candidates on This?
Critical for understanding journal quality assessment, research evaluation systems, and academic career advancement metrics.
Required skill level: Senior