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Vol. 3, No. 1 Fall 2005
The immediacy index is the average
number of times an article is cited in the year it is published.
The journal immediacy index indicates how quickly articles in
a journal are cited. The aggregate immediacy index indicates how
quickly articles in a subject category are cited. The immediacy
index is calculated by dividing the number of citations to articles
published in a given year by the number of articles published
in that year (many publications that publish infrequently or late
in the year have low immediacy indexes).
For comparing journals specializing in cutting-edge research,
the immediacy index can provide a useful perspective.
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