[Oa-italia] Articolo: The citation advantage of open access articles

Paola Gargiulo paola.gargiulo a caspur.it
Lun 14 Lug 2008 19:41:03 CEST

E’ uscito qualche giorno fa il seguente articolo

- Michael Norris, Charles Oppenheim and Fytton Rowland - “The citation 
advantage of open access articles” pubblicato sull’ultimo fascicolo del 
” Journal of the American Society for Information Science and Technology 
(JASIST) 9 July 2008 - Editore Wiley. La rivista non e’ ad accesso 
aperto, ma  accessibile solo ai sottoscrittori della rivista Wiley. Non 
so se ci sia in giro il pre-print ad accesso aperto. Non ho provato a 
cercarlo ;-)

Segue abstract

Four subjects - ecology, applied mathematics, sociology, and economics - 
were selected to assess whether there is a citation advantage between 
journal articles that have an open-access (OA) version on the Internet 
compared to those articles that are exclusively toll access (TA). 
Citations were counted using the Web of Science, and the OA status of 
articles was determined by searching OAIster, OpenDOAR, Google, and 
Google Scholar. Of a sample of 4,633 articles examined, 2,280 (49%) were 
OA and had a mean citation count of 9.04 whereas the mean for TA 
articles was 5.76. There appears to be a clear citation advantage for 
those articles that are OA as opposed to those that are TA. This 
advantage, however, varies between disciplines, with sociology having 
the highest citation advantage, but the lowest number of OA articles, 
from the sample taken, and ecology having the highest individual 
citation count for OA articles, but the smallest citation advantage. 
Tests of correlation or association between OA status and a number of 
variables were generally found to weak or inconsistent. The cause of 
this citation advantage has not been determined.


Paola Gargiulo
Settore Automazione Biblioteche
Via dei Tizii, 6b
00185 Roma - ITALY
Tel. ++39-06-44486-605
Fax ++39-06-4957083
p.gargiulo a caspur.it

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