Emotional Intensity & Instability (MSI-BPD)

What the MSI-BPD measures

Borderline Personality Disorder (BPD) is one of the most stigmatized, complex, and lethal psychiatric conditions (with a suicide rate near 10%). It is often misdiagnosed as Bipolar Disorder or Treatment-Resistant Depression. The MSI-BPD was developed by Mary Zanarini, a leading BPD researcher, to provide a fast, highly sensitive self-report screener based directly on the 9 DSM diagnostic criteria. It is designed to identify the core pathogenic feature of BPD: a disorganized, deeply painful internal emotional world driven by a core wound of abandonment.

The dimensions it assesses

• Frantic efforts to avoid abandonment.
• Unstable and intense interpersonal relationships (idealization/devaluation splitting).
• Identity disturbance (unstable self-image).
• Impulsivity in self-damaging areas (spending, sex, substance abuse).
• Recurrent suicidal behavior, gestures, or self-mutilation.
• Affective instability (extreme emotional reactivity).
• Chronic feelings of emptiness.
• Inappropriate, intense anger.
• Transient, stress-related paranoia or severe dissociation.

What to do with your result

1. Clinical Routing to DBT: BPD is notoriously resistant to standard talk therapy (CBT) and medication. The evidence-based gold standard treatment is Dialectical Behavior Therapy (DBT) developed by Marsha Linehan. Users scoring 7+ must be explicitly directed to find a certified DBT skills group or therapist.
2. De-Stigmatization Language: The report output must use compassionate, de-stigmatizing language. Explain that BPD is essentially "third-degree burns of the emotional system" where the individual lacks the protective emotional skin that others have, leading to extreme agony from minor interpersonal slights.
3. Managing the "Favorite Person" (FP) Dynamic: High scorers must be educated on the BPD "Splitting" dynamic—the tendency to idealize someone completely (the FP) and then abruptly devalue and hate them when a perceived abandonment occurs.

Common questions about the MSI-BPD

What does the MSI-BPD measure?

Screening for Borderline Personality Disorder (BPD), a severe condition characterized by extreme emotional instability, fear of abandonment, and impulsive self-harm.

Can the MSI-BPD diagnose me?

No. Emotional Intensity & Instability (MSI-BPD) is a screening questionnaire, not a diagnostic tool. It can flag that something may need a closer look. It cannot tell you what is causing it. Grief, burnout, a thyroid problem, medication side effects, chronic pain and months of bad sleep are not among its questions, and any of them can move a score. Telling those apart is what a professional assessment is for.

Is this MSI-BPD test really free?

Yes. No account, no email address, no payment. Psychometrics Today is funded by donations rather than advertising, which is also what allows us to publish instruments whose authors permit free but non-commercial use.

Are my answers stored or shared?

No. Your answers are scored inside your browser and never sent to us. There is no database of responses, because we never receive any. Closing the tab erases them, which is why results cannot be recovered afterwards.

How often should I retake the MSI-BPD?

Most of these questionnaires ask about the past one to two weeks, so retaking sooner than that mostly measures the same period twice. Every two to four weeks is a reasonable rhythm if you are tracking change. A direction of travel over several weeks tells a doctor far more than any single score.

How accurate is the MSI-BPD?

Screening questionnaires are good at flagging that something merits attention and poor at establishing what it is. This one is sensitive to how you feel on the day you take it, and many instruments were validated on narrow populations whose cut-offs may not transfer cleanly to everyone. The references at the foot of this page are the primary sources.

Why can I not take the MSI-BPD here?

Permission required for use. We will not reproduce a questionnaire we have no right to reproduce, so this page explains what it measures instead. Explain borderline traits editorially and link to professional assessment.