Verspoor K, Cohen KB, Hunter L. The textual characteristics of traditional and Open Access scientific journals are similar. BMC Bioinformatics 2009,10:183
The authors collected two sets of documents, one consisting only of Open Access publications and the other consisting only of traditional journal publications. Surface linguistic structures were examined (incidence of conjunctions, negation, passives, pronominal anaphora), and found that the two collections did not differ. The distribution of sentence lengths in both collections were characterized by the same mode. Small differences did exist, but the conclusion is that no structural or semantic differences appeared between the Open Access and traditional journal collections.