About the Authors

Stéphanie Le Hellard

Contributed equally to this work with: Stéphanie Le Hellard, Bjarte Håvik

stephanie.hellard@med.uib.no

Affiliations Bergen Mental Health Research Center, Department of Clinical Medicine, University of Bergen, Bergen, Norway, Dr Einar Martens' Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Helse Bergen HF, Bergen, Norway

Bjarte Håvik

Contributed equally to this work with: Stéphanie Le Hellard, Bjarte Håvik

Affiliations Bergen Mental Health Research Center, Department of Clinical Medicine, University of Bergen, Bergen, Norway, Dr Einar Martens' Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Helse Bergen HF, Bergen, Norway

Thomas Espeseth

Affiliation Center for the Study of Human Cognition, Department of Psychology, University of Oslo, Blindern, Oslo, Norway

Harald Breilid

Affiliations Bergen Mental Health Research Center, Department of Clinical Medicine, University of Bergen, Bergen, Norway, Dr Einar Martens' Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Helse Bergen HF, Bergen, Norway

Roger Løvlie

Affiliations Bergen Mental Health Research Center, Department of Clinical Medicine, University of Bergen, Bergen, Norway, Dr Einar Martens' Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Helse Bergen HF, Bergen, Norway

Michelle Luciano

Affiliation Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom

Alan J. Gow

Affiliation Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom

Sarah E. Harris

Affiliation Centre for Cognitive Ageing and Cognitive Epidemiology, Medical Genetics Section, University of Edinburgh Centre for Molecular Medicine, Western General Hospital, Edinburgh, United Kingdom

John M. Starr

Affiliation Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom

Karin Wibrand

Affiliation Department of Biomedicine and Bergen Mental Health Research Center, University of Bergen, Bergen, Norway

Astri J. Lundervold

Affiliation Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway

David J. Porteous

Affiliation Centre for Cognitive Ageing and Cognitive Epidemiology, Medical Genetics Section, University of Edinburgh Centre for Molecular Medicine, Western General Hospital, Edinburgh, United Kingdom

Clive R. Bramham

Affiliation Department of Biomedicine and Bergen Mental Health Research Center, University of Bergen, Bergen, Norway

Ian J. Deary

These authors also contributed equally to this work.

Affiliation Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom

Ivar Reinvang

These authors also contributed equally to this work.

Affiliation Center for the Study of Human Cognition, Department of Psychology, University of Oslo, Blindern, Oslo, Norway

Vidar M. Steen

Affiliations Bergen Mental Health Research Center, Department of Clinical Medicine, University of Bergen, Bergen, Norway, Dr Einar Martens' Research Group for Biological Psychiatry, Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Helse Bergen HF, Bergen, Norway

Competing Interests

The results presented in this article are part of a patent application: 09005576.5–1222.

Author Contributions

Conceived and designed the experiments: SLH BH TE RL KW CB IR VS. Performed the experiments: SLH BH HB. Analyzed the data: SLH BH. Contributed reagents/materials/analysis tools: SLH BH TE ML AJG SH JMS AL DP ID IR VS. Wrote the paper: SLH BH TE CB ID IR VS.