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The impact factor was devised by Eugene Garfield, the founder of the Institute for Scientific Information (ISI) in Philadelphia. Impact factors began to be calculated yearly starting from 1975 for journals listed in the Journal Citation Reports (JCR). ISI was acquired by Thomson Scientific & Healthcare in 1992, [4] and became known as Thomson ISI.
The ISI also published the annual Journal Citation Reports which list an impact factor for each of the journals that it tracked. Within the scientific community, journal impact factors continue to play a large but controversial role in determining the kudos attached to a scientist's published research record.
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as indexed by Clarivate's Web of Science.
Psychology & Developing Societies; Psychology and Psychotherapy: Theory, Research and Practice; Psychology in Russia; Psychology of Addictive Behaviors; Psychology of Aesthetics, Creativity, and the Arts; Psychology of Men and Masculinity; Psychology of Music; Psychology of Religion and Spirituality; Psychology of Women Quarterly; Psychology ...
For instance, most papers in Nature (impact factor 38.1, 2016) were only cited 10 or 20 times during the reference year (see figure). Journals with a lower impact (e.g. PLOS ONE, impact factor 3.1) publish many papers that are cited 0 to 5 times but few highly cited articles. [21]
Journal ranking is widely used in academic circles in the evaluation of an academic journal's impact and quality. Journal rankings are intended to reflect the place of a journal within its field, the relative difficulty of being published in that journal, and the prestige associated with it.
This suggests the English-dominant nature of the SSCI affects the number of Non-English articles and also their impact factor. Comparing Turkish articles average citations with other non-English countries, Olpak and Arican found Turkey's average count was 6.653, Taiwan's was 17.35, Germany was 17.29 and Spain was 12.77.
"Impact of data sources on citation counts and rankings of LIS faculty: Web of science versus scopus and google scholar" (PDF). Journal of the American Society for Information Science and Technology .