Clarivate Analytics is pleased to announce that the 2018 Journal Citation Reports (based on 2017 data) has been released today. The latest update to the JCR includes 11,655 total journals across 234 disciplines and 80 countries. On average, Journal Impact Factor scores increased by 10%.
This year, in addition to the new data, we are also excited to offer a brand-new journal profile page. This page provides a narrative for each journal: it gives context to the Journal Impact Factor (JIF) as a performance across time, the full citation distribution for the JIF calculation, full transparency on the JIF calculation, and geographic and institutional contributions. The components that make up a journal are more complex than citations, and this new journal profile page shows the connectivity of the complexity.
Following the completion of the JCR data production, the editorial and management team became aware of a citation anomaly affecting the JIF of several journals. The possibility of manipulation of citation metrics is a serious matter, and Clarivate Analytics remains the only bibliometrics provider to monitor, survey and curate our data to identify anomalies that lead to distorted rankings. We have prepared an Editorial Expression of Concern (available here), which is also published in full in the JCR.
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