This article refers to:
Cognitive attainment in online learning environments: matching cognitive and technological presence
Elena Barbera, Eulalia Torras and Teresa Guasch
Published in Interactive Learning Environments, iFirst article, DOI: 10.1080/10494820.2010.531026.
The authors regret that in the iFirst version of this article on page 1 the author name Elena Gregori was incorrect. The correct name is Elena Barbera.
The authors would like to apologise for this error.