The study investigates psychometric properties of a dimensional measure of maladaptive core pathology for personality disorders, the Severity Indices of Personality Problems (SIPP). The study analyzes data from a community sample, a sample with patients with personality disorders (POD) and two samples with substance use disorders (SUD). The goals of the project is to validate and establish a Norwegian norm for SIPP-118, explore a short form for clinical use and to explore the amount of personality problems in the SUD population and discuss clinical implications.

Collaborators: Espen Ajo Arnevik (OUS), Espen Walderhaug (OUS), Theresa Wilberg (OUS), Benjamin Hummelen (OUS), Geir Pedersen (OUS)


  • Pedersen, G., Arnevik, E.A., Hummelen, B., Walderhaug, E., Wilberg, T. (2017). Psychometric Properties of the Severity Indices of Personality Problems (SIPP) in Two Samples: A Norwegian Community Sample and Clinical Samples of Patients With and Without Personality Disorders. 2European Journal of Psychological Assessment.
  • Arnevik, E., Wilberg, T., Andrea, H., Monsen, J. & Karterud, S. (2009). A cross-national validity study of the Severity Indices of Personality Problems (SIPP-118). Personality and Mental health, 3, 41-55.


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