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Open Access Articles Generating More Citations Than Non-OA - Report in PLoS Biology

.: The 18 May 2006 issue of Knowledgespeak includes mention of a study just published in PLoS Biology, which suggests that OA articles are more likely to be cited more frequently than non-OA articles. The study, Citation Advantage of Open Access Articles, was written by Gunther Eysenbach, University of Toronto, and was based on analysis of articles published in Proceedings of the National Academy of Sciences. Excerpts from the abstract:

Open access (OA) to the research literature has the potential to accelerate recognition and dissemination of research findings, but its actual effects are controversial. This was a longitudinal bibliometric analysis of a cohort of OA and non-OA articles published between June 8, 2004, and December 20, 2004, in the same journal (PNAS: Proceedings of the National Academy of Sciences). Article characteristics were extracted, and citation data were compared between the two groups at three different points in time: at “quasi-baseline” (December 2004, 0–6 mo after publication), in April 2005 (4–10 mo after publication), and in October 2005 (10–16 mo after publication).

Articles published as an immediate OA article on the journal site have higher impact than self-archived or otherwise openly accessible OA articles. We found strong evidence that, even in a journal that is widely available in research libraries, OA articles are more immediately recognized and cited by peers than non-OA articles published in the same journal. OA is likely to benefit science by accelerating dissemination and uptake of research findings.

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