Principal Investigators

Sverre Urnes Johnson

Principal Investigator (PI)

Omid V. Ebrahimi

Principal Investigator (PI)

The Principal Investigators of the PACE study include Sverre Urnes Johnson and Omid V. Ebrahimi. 

The investigators are affiliated with the University of Oslo and Modum Bad Psychiatric Hospital, and have recently undertaken another large-scale population study investigating mental health trajectories during the COVID-19 pandemic.

The researchers regularly disseminate their findings across national, regional and local media platforms to make them accessible to the general population.

The findings derived from the PACE study, along with any media disseminations, will be made available on the study's website upon the publication of the results and their preparation for public dissemination.

Project Group

Sverre Urnes Johnson

Specialist in Clinical Psychology

Omid V. Ebrahimi

Licensed Clinical Psychologist
Senior Researcher

Marieke A. Helmich

Postdoctoral Researcher

Asle Hoffart

Specialist in Clinical Psychology
Emeritus Professor


The PACE Study involves a collaboration between leading researchers in psychiatric epidemiology and the dynamical systems field at the University of Oxford, University of Amsterdam, National University of Singapore, KU Leuven, Modum Bad Psychiatric Hospital, and the University of Oslo.

PACE is a study by the COPE Research Lab

Complexity in treatment Outcome, Psychopathology and Epidemiology (COPE) is a research group situated at the University of Oslo and Modum Bad Psychiatric Hospital.

The main areas of investigation of the COPE lab include the application and adaptation of complex systems (C) to improve the outcome (O) of psychological treatments, enhance the understanding of the mechanisms interwoven with the maintenance and emergence of psychopathology (P), and longitudinal epidemiological (E) cohort studies to assess mental health changes in the general population in order to enhance the understanding of critical transitions that push individuals from non-diagnostic to psychopathological states.