Psychoanalysis.  2024 Apr;35(2):15-21. 10.18529/psychoanal.2024.35.2.15.

Validation of the Korean Translation of the Level of Personality Functioning Scale – Self-Report (LPFS-SR)

• Kwon J
• Kwak S

• KMID: 2555680
• DOI: http://doi.org/10.18529/psychoanal.2024.35.2.15

Abstract

Objectives
The Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition provides an alternative model for dimensional assessment of personality disorders (AMPD). In Criterion A of the alternative model, the presence and severity of personality disorders are indicated by the Level of Personality Functioning. The Level of Personality Functioning Scale–Self Report (LPFS-SR) was further developed to readily assess the construct. This study aimed to examine rudimentary reliability and validity of the translated Korean version of the LPFS-SR.
Methods
A total of 395 participants completed an online survey that included the LPFS-SR and the Millon Clinical Multiaxial Inventory-IV (MCMI-IV). The present study examined internal consistency and item-total score correlations within the four components (identity, self-direction, empathy, and intimacy) of personality functioning characterized in Criterion A of the AMPD. Criterion validity was also examined for previously validated measures of personality pathology.
Results
Internal consistency within the four personality functioning components of the LPFS-SR ranged from 0.80 to 0.89. Items of reversed form and contents that required interpersonal self-awareness were weakly correlated with the LPFSSR total score, while items related to general distress and dissatisfaction were strongly correlated with the LPFS-SR total score. The LPFS-SR total score was strongly correlated with MCMI-IV scales of Schizotypal, Melancholic, and Borderline, whereas compulsive and histrionic scales were minimally correlated. Partial correlations remained consistent after controlling for the effect of psychological distress, suggesting the robustness of the criterion validity.
Conclusion
The LPFS-SR demonstrated high internal consistency and criterion validity with extant measures of personality pathology.

Keyword

Personality disorders; Millon clinical multiaxial inventory; Psychological tests; Levels of personality functioning