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Permalink Reply by Mamta Verma on June 29, 2010 at 22:16

Impact factor of a journal indicates the average number of citations to the articles published in that particular journal whether it is a journal in the field of science or technology or social sciences. Impact factor is an indicator of relevance/significance of the journal in its field.

The concept of the impact factor has been devised by Eugene Garfield.

The journals having higher impact factor are considered more important than having lower impact factor. Impact factor is used to compare various journals in the same field of study.

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Permalink Reply by shriram Pandey on June 30, 2010 at 2:29

Impact factor is a measure of citation to science and social science journals.It is devised by Eugene Garfield.
It is calculated on the basis of three -years periods.

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Permalink Reply by Mrs.K Kavita Rao on June 30, 2010 at 17:46

Sir,
you can study the paper by Eugene Garfield "The Meaning of Impact factor" published in 2003 -available freely online at the following site adress:
http://redalyc.uaemex.mx/redalyc/pdf/337/33730210.pdf

You can also refer the following:

1) http://en.wikipedia.org/wiki/Impact_factor

2)http://disc.brunel.ac.uk/isj/Impact%20Factor%203rd%20Edition.pdf

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