Validating the Italian version of the Level of Personality Functioning Scale - Brief Form 2.0 (LPFS-BF 2.0): internal
Emanuela S Gritti1, De Carli Pietro2, Joost Hutsebaut3,4
1Department of Humanistic Studies, University of Urbino Carlo Bo, Urbino, Italy. emanuela.gritti@uniurb.it.
Summary
The Italian Level of Personality Functioning Scale-Brief Form 2.0 (LPFS-BF 2.0) shows a two-factor structure and strong psychometric properties. This validated screening tool is useful for personality assessment research and practice.
Area of Science:
- Psychology
- Psychometrics
Background:
- Contemporary personality assessment favors dimensional over categorical frameworks.
- The Alternative DSM-5 Model for Personality Disorders (AMPD) incorporates this dimensional view.
- Research is ongoing regarding the structure and psychometric properties of AMPD assessment tools.
Purpose of the Study:
- To evaluate the internal structure, temporal stability, and construct validity of the Italian Level of Personality Functioning Scale-Brief Form 2.0 (LPFS-BF 2.0).
- To assess the psychometric properties of this self-report screening questionnaire for AMPD level of personality functioning in a non-clinical adult sample.
Main Methods:
- Confirmatory Factor Analysis was used to test the internal structure of the Italian LPFS-BF 2.0.
- Pearson's correlations and Steiger's Test assessed temporal stability and construct validity.
- The study included 482 non-clinical adults.
Main Results:
- A two-factor structure for the LPFS-BF 2.0 was supported.
- Convergent and discriminant validity were evidenced by medium to large effect size correlations with external measures.
- High temporal stability (rs > .70) was demonstrated over 11.5 weeks.
Conclusions:
- The Italian LPFS-BF 2.0 exhibits psychometric properties comparable to its original and international versions.
- The scale is suitable for use in personality assessment research and clinical practice.
- Findings support the utility of the LPFS-BF 2.0 for assessing personality functioning within the AMPD framework.
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