This citation database covers some 2,474 of the world's leading journals of social sciences across more than 50 disciplines. It is made available online through the Web of Science service for a fee. This database product provides information to identify the articles cited most frequently and by what publisher and author.
In 2004 economists Daniel B. Klein and Eric Chiang conducted a survey of the Social Sciences Citation Index and identified a bias against free market oriented research. In addition to an ideological bias, Klein and Chiang also identified several methodological deficiencies that encouraged the over-counting of citations, and they argue that the Social Sciences Citation Index does a poor job reflecting the relevance and accuracy of articles.