Mathematically, an impact factor can only be calculated in year 4 (the JIF is defined as the number of citations in year 3, to articles published in year 1 or 2). but in real life how long does it take for a journal to get an impact factor?
If I understand the question well, this depends on the journal itself or the database. Some journals make revision every 6 months or any agreed upon period, others make it on a yearly basis.
A great question, respected Assistant Professor Dr. Mabrouk Boutagouga.
Actually, the Impact Factor of any respected Academic Journal should calculate every two years not every four years.
An example:
Calculation of 2010 IF of a journal:
A = the number of times articles published in 2008 and 2009 were cited by indexed journals during 2010.
B = the total number of "citable items" published in 2008 and 2009.
A/B = 2010 impact factor
Check the link below please:
https://researchguides.uic.edu/if/impact
I hope I answered your question.
Best Regards,
Ahmad AL-Dafrawi.
https://www.researchgate.net/project/Researcher-Skills-Improvement
The Impact Factor is the most extensively used index for measuring the quality of a journal.
In order to get Impact Factor A journal must be submitted for Thomson Reuters’ review. Once it is accepted for coverage it usually receives its first impact factor only three years later. However, being selected for coverage is not an easy task. Each year, Thomson Reuters editorial staff reviews over 2,000 journals and only around 10-12% of them are accepted for coverage.
A journal needs to meet specific selection criteria, such as:
Citation Analysis: " Thomson Reuters looks for citations to the journal itself" Basic Publishing Standards: "A journal must be published on time; has to follow international editorial conventions; be peer-reviewed ...etc"
Editorial Content: " a journal needs to have unique features and be distinguished from other journals in the field "
International Diversity: " whether the authors, editors, and editorial advisory board members are from around the world".
It depends on the publisher strategy, but not less than two years with published papers.
Regards,
Emad
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