Background: Decades of research on the dimensional nature of personality disorder (PD) have led to the replacement of categorical PD diagnoses by a dimensional assessment of PD severity (PDS) in ICD-11, which essentially corresponds to personality functioning in the alternative DSM-5 model for PDs. Besides advancing the focus in the diagnosis of PD on impairments in self and interpersonal functioning, this shift also urges clinicians and researchers worldwide to get familiar with new diagnostic approaches. Aims: T…