Within-Journal Demonstrations of the Open-Access Impact Advantage: PLoS, Pipe-Dreams and Peccadillos.
Eysenbach's (2006) study in PloS Biology on 1492 articles published during one 6-month period in one journal (PNAS) found that the Open Access (OA) articles were more cited than the non-OA ones. The online bibliography on the OA citation advantage http://opcit.eprints.org/oacitation-biblio.html records a number of prior within-journal comparisons that found exactly the same effect: freely available articles are read and cited more. Eysenbach’s further finding that the OA advantage (in this particular 6-month, 3-option, 1-journal PloS/PNAS study) is greater for articles that have paid for OA publication than for those that have merely been self-archived will require replication on much larger samples as most of the prior evidence for the OA advantage comes from self-archived articles and is based on sample sizes four orders of magnitude larger for both the number of articles and the number of journals tested.
Available Versions of this Item
Within-Journal Demonstrations of the Open-Access Impact Advantage: PLoS, Pipe-Dreams and Peccadillos. (deposited 16 May 2006)
Actions (login required)