SSCI is a social science citation index, a companion piece of SCI, and was founded by institute for scientific information. It is a large-scale retrieval tool, which can be used to analyze the number of social science papers in different countries and regions.
1999 SSCI contains 1809 kinds of the most important social science journals in the world, covering 55 fields such as anthropology, law, economics, history, geography and psychology. The types of documents collected include: research papers, book reviews, special discussions, editorials, autobiographies, letters, etc. It selectively covers 1300 journals.
Social Science Citation Index (SSCI) includes 2684 social science journals (as of June 9, 2009), and also includes papers related to social science research in journals included in SCIE.