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What Is the MSI-BPD? McLean Screening Explained
Learn what the MSI-BPD is, who developed it, how the 10 yes/no items work, and why it is a screening instrument—not a borderline personality disorder diagnosis.
Quick answer
The MSI-BPD is a 10-item yes/no screening questionnaire for borderline personality disorder traits in adults. It was validated by Zanarini and colleagues (2003). A positive screen suggests further evaluation—not a diagnosis.
Key takeaways
- Instrument: McLean Screening Instrument for Borderline Personality Disorder
- Format: 10 yes/no items about adolescence and adulthood
- Purpose: brief research and clinical screening, not diagnosis
- Cutoff context: 7+ used in the original validation study
- Next step: talk with a licensed clinician if patterns affect daily life
Quick answer
The McLean Screening Instrument for Borderline Personality Disorder (MSI-BPD) is a short yes/no questionnaire. It helps adults and clinicians notice patterns linked to BPD in research. It is a screening instrument, not a diagnostic interview.
Why it exists
Full BPD assessment takes time. Clinicians and researchers often need a brief first step that is easy to score. The MSI-BPD was built for that role: flag people who may benefit from a longer evaluation.
Who developed it
Mary C. Zanarini and colleagues at McLean Hospital developed the MSI-BPD. The main validation study was published in the Journal of Personality Disorders in 2003. You can read the PubMed record here: PMID 14560840.
What the 10 questions cover
Items ask about experiences across adolescence and adulthood. Themes include:
- Unstable or intense relationships
- Fear of abandonment
- Mood swings and intense anger (see BPD emotional dysregulation)
- Identity confusion or emptiness
- Dissociation
- Self-harm or suicide attempts
This site groups answers into four learning themes (interpersonal, affective, identity, impulsivity). Those theme totals are for reflection. They are not a separate official scale.
How screening differs from diagnosis
| Screening (MSI-BPD) | Diagnosis |
|---|---|
| Short self-report | Clinical interview and history |
| Flags patterns | Weighs duration, impairment, and differential conditions |
| Can be done privately online | Requires a licensed clinician |
A positive screen means “look closer.” It does not mean “you have BPD.”
Where to go next
- How MSI-BPD scoring works
- BPD emotional dysregulation
- What research says about accuracy
- Scientific references
- Take the free screen
Sources
- Zanarini, M. C., Vujanovic, A. A., Parachini, E. A., Boulanger, J. L., Frankenburg, F. R., & Hennen, J. (2003). A screening measure for BPD: the McLean Screening Instrument for Borderline Personality Disorder (MSI-BPD). Journal of Personality Disorders. PubMed PMID 14560840
- NIMH — Borderline Personality Disorder
Frequently asked questions
Is the MSI-BPD a diagnostic test?
No. It is a screening instrument. Only a qualified clinician can diagnose borderline personality disorder after a full assessment.
Who created the MSI-BPD?
Mary C. Zanarini and colleagues at McLean Hospital developed and validated the instrument; the primary paper appeared in 2003.
How long does the MSI-BPD take?
Most adults finish the 10 items in about 2–3 minutes.