Interpersonal functioning deficits in association with DSM-IV personality disorder dimensions

Area of Science:

• Psychiatry
• Clinical Psychology
• Social Psychology

Background:

• Interpersonal functioning deficits are a core criterion for personality disorders (PDs) in the DSM.
• However, the relationship between specific PD diagnoses and interpersonal deficits requires further investigation.
• Social deficits across all PD dimensions have been understudied.

Purpose of the Study:

• To investigate the association between all personality disorder dimensions and interpersonal functioning deficits.
• To determine if certain PD dimensions are more strongly related to social deficits than others.

Main Methods:

• Analysis of data from 511 adults (aged 20-41) from the general population of Zurich, Switzerland.
• Measurement of PD dimensions using a questionnaire and interpersonal functioning indicators via a semi-structured interview.
• Statistical analysis using generalized linear models to assess associations.

Main Results:

• All PD dimensions showed significant associations with interpersonal functioning deficits, including distress in relationships, loneliness, and reduced social support.
• Schizotypal and borderline PD dimensions were particularly strongly associated with distress in friendships.
• These two dimensions were significantly related to all measured indicators of interpersonal functioning deficits.

Conclusions:

• Individuals with high scores on any PD dimension experience significant interpersonal functioning deficits, including social isolation and relationship difficulties.
• All DSM-IV PDs are associated with impaired interpersonal functioning.
• Schizotypal and borderline PD symptomatology appear to have a more profound and pervasive impact on social interaction deficits compared to other PD dimensions.