Created as SCI in 1964, Science Citation Index Expanded™ now indexes over 9,500 of the world’s most impactful journals across 178 scientific disciplines. More than 53 million records and 1.18 billion cited references date back from 1900 to present.
Our expert in-house editors use a single set of 28 criteria throughout the journal selection and curation process. Divided into 24 ‘quality’ criteria and four ‘impact’ criteria, our editors select the most influential journals in their respective fields (using citation activity as the primary indicator of impact) for the Science Citation Index Expanded.
Our process of curation is unique
Editorial decisions are conducted by our expert in-house editors, who have no affiliations to publishing houses or research institutes. Using objectivity, selectivity, and collection dynamics as the basic principles of our selection process, we use a single set of 28 criteria to evaluate a journal’s quality (24 quality criteria) and influence (4 impact criteria). These are dynamic collections, subject to continuous curation, to ensure journals continue to meet our editorial standards and are in the appropriate collection.
All the journals that we select for inclusion in the Science Citation Index Expanded are indexed cover-to-cover. For each paper, we capture all the authors, all the author affiliations, the abstract and key words (if provided by the author), funding acknowledgements, including agency and grant numbers (if provided), and all the cited references.
Complete Cited Reference Searching
The power of complete cited reference searching enables you to access the entire citation network of 1.18 billion cited reference connections in the Science Citation Index Expanded. Cited reference searching lets you track how any idea, innovation, or creative work has been confirmed, applied, improved, extended, or corrected, and discover anyone who is citing your research worldwide.
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