What question did this study set out to answer?

The study aims to explore whether borderline personality disorder (BPD) is a distinct disorder or reflects levels of personality functioning (LPF).

July 26, 2026Personality Disorders Theory Research and TreatmentOpen Access

Two operationalizations of a single construct: Overlap between borderline personality disorder and the level of personality functioning.

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Authors

RMR.M. MartinMonash University AKAwal KuerMonash University MSMartin SellbomMonash University

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Implication

Randomized trial examines the overlap between borderline personality disorder and personality functioning levels, suggesting a shift in focus for treatment resources.

Key Points

The study aims to explore whether borderline personality disorder (BPD) is a distinct disorder or reflects levels of personality functioning (LPF).
Analyzed archival data from 289 adults in community-based mental health treatment.
Participants completed clinician-rated and self-report measures assessing BPD symptoms and LPF.
Utilized confirmatory factor analyses and bifactor modeling to assess the relationship between constructs.
Significant overlap found between BPD and LPF measures, indicating shared variance.
Confirmatory factor analyses confirmed a dominant general factor between the two constructs.
BPD retained unique variance linked primarily to externalizing domains.

Cite This Study

Martin et al. (2026) studied this question.

synapsesocial.com/papers/6a65a422d3aea3239cd76f34 https://doi.org/10.1037/per0000780

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Implication

Randomized trial examines the overlap between borderline personality disorder and personality functioning levels, suggesting a shift in focus for treatment resources.

Two operationalizations of a single construct: Overlap between borderline personality disorder and the level of personality functioning.

Discussion

Member takes

Implication

Key Points

Cite This Study

Two operationalizations of a single construct: Overlap between borderline personality disorder and the level of personality functioning.

Discussion

Member takes

Implication

Key Points

Cite This Study

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