Borderline Personality Features, Interpersonal Correlates, and Blood Pressure Response to Social Stressors:...

Area of Science:

• Psychiatry
• Cardiovascular Medicine
• Social Psychology

Background:

• Borderline personality disorder (BPD) is associated with increased cardiovascular disease (CVD) risk.
• Interpersonal factors are increasingly recognized as significant contributors to health outcomes.
• Understanding the mechanisms linking BPD to CVD is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate the interpersonal mechanisms linking borderline personality disorder (BPD) features to cardiovascular disease (CVD) risk.
• To examine the role of hostile-submissive interpersonal behavior, social support, and interpersonal conflict in the BPD-CVD association.
• To assess the impact of BPD features on blood pressure reactivity to interpersonal stressors.

Main Methods:

• Two studies utilized undergraduate samples (N=293, N=188 in Study 1; N=143 in Study 2).
• Study 1 assessed BPD features, interpersonal behavior (hostility, submissiveness), social support, and interpersonal conflict.
• Study 2 measured blood pressure responses to laboratory-based interpersonal conflict and evaluative threat tasks.

Main Results:

• BPD features correlated with hostile-submissive behavior, low social support, and high interpersonal conflict.
• Hostile-submissive behavior partially mediated the association between BPD features and low social support.
• BPD features predicted elevated blood pressure reactivity specifically to interpersonal conflict, not evaluative threat.

Conclusions:

• The interpersonal perspective offers valuable insights into the mechanisms linking BPD to CVD risk.
• Reduced social support and heightened reactivity to interpersonal conflict may be key pathways through which BPD confers CVD risk.
• These findings highlight the importance of addressing interpersonal dynamics in managing CVD risk among individuals with BPD features.