About the Authors

Randi Liset

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Writing – original draft

Randi.Liset@uib.no

Affiliation Department of Psychosocial Science, Faculty of Psychology, University of Bergen, Bergen, Norway

Janne Grønli

Roles Conceptualization, Data curation, Investigation, Methodology, Resources, Supervision, Writing – review & editing

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

Roger E. Henriksen

Roles Conceptualization, Methodology, Supervision, Writing – review & editing

Affiliation Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway

Tone E. G. Henriksen

Roles Conceptualization, Methodology, Resources, Supervision, Writing – review & editing

Affiliations Division of Mental Health Care, Valen Hospital, Fonna Local Health Authority, Valen, Norway, Department of Clinical Medicine, Section for Psychiatry, Faculty of Medicine, University of Bergen, Bergen, Norway

Roy M. Nilsen

Roles Formal analysis, Software, Supervision, Writing – review & editing

Affiliation Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway

Ståle Pallesen

Roles Conceptualization, Formal analysis, Methodology, Resources, Software, Supervision, Writing – review & editing

Affiliations Department of Psychosocial Science, Faculty of Psychology, University of Bergen, Bergen, Norway, Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway, Optentia, The Vaal Triangle Campus of the North-West University, Vanderbijlpark, South-Africa

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests: REH and TEGH are share-holders in Chrono Chrome AS. TEGH has received speaker honorarium from H. Lundbeck AS. This does not alter our adherence to PLOS ONE policies on sharing data and materials.