Impact Factor 3.169 | CiteScore 5.1
More on impact ›


Front. Hum. Neurosci., 19 May 2014 |

Corrigendum: “Ten year neurocognitive trajectories in first-episode psychosis”

Helene E. Barder1*, Kjetil Sundet1,2, Bjørn Rund2, Julie Evensen3, Ulrik Haahr4, Wenche Hegelstad5, Inge Joa5,6, Jan O. Johannessen5,6, Johannes Langeveld5, Tor K. Larsen5,7, Ingrid Melle1,3, Stein Opjordsmoen1,3, Jan I. Røssberg1,3, Erik Simonsen8, Per Vaglum9, Thomas McGlashan10 and Svein Friis1,3
  • 1NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital, Oslo, Norway
  • 2Department of Psychology, University of Oslo, Oslo, Norway
  • 3Division of Mental Health and Addiciton, Institute of Clinical Medicine, Oslo University Hospital, Oslo, Norway
  • 4Psychiatry Roskilde, Early Psychosis Intervention Centre, Roskilde, Denmark
  • 5Psychiatric Division, Regional Centre for Clinical Research in Psychosis, Stavanger University Hospital, Stavanger, Norway
  • 6Department of Health Studies, University of Stavanger, Stavanger, Norway
  • 7Department of Clinical Medicine, Institute of Psychiatry, University of Bergen, Bergen, Norway
  • 8Psychiatric Research Unit, Department of Psychology and Educational Studies, Roskilde University and University of Conpenhagen, Roskilde, Denmark
  • 9Department of Behavioural Sciences in Medicine, University of Oslo, Oslo, Norway
  • 10Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA

A corrigendum on
Ten year neurocognitive trajectories in first-episode psychosis

by Barder, H. E., Sundet, K., Rund, B., Evensen, J., Haahr, U., Hegelstad, W., et al. (2013). Front. Hum. Neurosci. 7:643. doi: 10.3389/fnhum.2013.00643

A small part of the data on five of the 43 patients was accidentally displaced in the data file, which affected two of the results presented in the original manuscript.

The statistical significance of the MANCOVA (controlling for IQ and education) is not statistically significant. However, the effect size is still substantial (η2 = 0.444). The Motor Speed index does not show a statistically significant interaction with relapse-group, leaving Figure 4 redundant. A few minor changes in the decimals are added to Tables 1, 3.


Table 1. The four neurocognitive indices with the corresponding subtests and raw scores at each time point for the follow-up sample (Corrected numbers in red).


Table 3. Results from MANOVA; effects of early relapse on neurocognitive indices over time (Corrected numbers in red).

Conflict of Interest Statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Keywords: neurocognition, psychosis spectrum disorders, first-episode, longitudinal studies, neuropsychiatry

Citation: Barder HE, Sundet K, Rund B, Evensen J, Haahr U, Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Vaglum P, McGlashan T and Friis S (2014) Corrigendum: “Ten year neurocognitive trajectories in first-episode psychosis”. Front. Hum. Neurosci. 8:319. doi: 10.3389/fnhum.2014.00319

Received: 22 April 2014; Accepted: 29 April 2014;
Published online: 19 May 2014.

Edited and reviewed by: Russell A. Poldrack, University of Texas, USA

Copyright © 2014 Barder, Sundet, Rund, Evensen, Haahr, Hegelstad, Joa, Johannessen, Langeveld, Larsen, Melle, Opjordsmoen, Røssberg, Simonsen, Vaglum, McGlashan and Friis. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: e-mail: