Level of Personality Functioning Scale-Brief Form 2.0: Factor Structure and Clinical Cutoffs

Area of Science:

• Psychology
• Psychiatry
• Clinical Psychology

Background:

• The Alternative Model for Personality Disorders uses Level of Personality Functioning (LPF) as a diagnostic criterion.
• The Level of Personality Functioning-Brief Form 2.0 (LPFS-BF 2.0) shows promise but requires further validation regarding its factor structure and clinical cutoffs.

Purpose of the Study:

• To examine the factor structure of the LPFS-BF 2.0.
• To assess the convergent and discriminant validity, clinical utility, and establish cutoff scores for the LPFS-BF 2.0.

Main Methods:

• Factor structure analysis was conducted on data from 365 young adults.
• Convergent/discriminant validity and clinical utility were assessed in a mixed college and clinical sample (N=164).
• Sensitivity and specificity were evaluated against the Semi-Structured Interview for Personality Functioning cutoff.

Main Results:

• A bifactor model demonstrated an essentially unidimensional structure for the LPFS-BF 2.0.
• Convergent and discriminant validity were generally supported.
• The LPFS-BF 2.0 accurately distinguished individuals above and below the clinical cutoff with high sensitivity and specificity.

Conclusions:

• The LPFS-BF 2.0 exhibits sound psychometric properties.
• The measure is clinically useful for identifying personality dysfunction.
• This study supports the utility of the LPFS-BF 2.0 in personality disorder assessment.