Young Mania Rating Scale (YMRS): Scoring and Cutoffs

The YMRS is the criterion-standard 11-item clinician-administered scale for measuring manic symptom severity in bipolar disorder. Validated in 100+ clinical trials and translated into 40+ languages.

What is the YMRS?

The YMRS (Young Mania Rating Scale) is an 11-item clinician-administered rating scale for manic symptom severity developed by Young, Biggs, Ziegler, and Meyer (1978) at the Medical College of Virginia. It is the most widely used mania outcome measure in clinical trials and psychiatric practice worldwide, endorsed by major guidelines for assessing and tracking bipolar I mania.

Items cover the core domains of a manic episode: elevated mood, increased motor activity, sexual interest, reduced sleep, irritability, pressured speech, thought disorder, grandiose content, disruptive behavior, appearance changes, and impaired insight. Seven items are scored 0–4; four items (irritability, speech, content, and disruptive-aggressive behavior) are weighted and scored 0–8 due to their greater clinical significance. Total scores range from 0 to 60.

Although originally designed for clinician administration, the YMRS is increasingly used as a self-report (patient-rated) measure in clinical research settings. Patient-rated versions show acceptable convergent validity with clinician-rated scores, particularly for mild-to-moderate mania.

Clinician-Administered Tool

The YMRS is designed for clinician administration and requires clinical judgment for accurate scoring - particularly for items like thought disorder, content (delusions/hallucinations), and disruptive-aggressive behavior. Each item is rated over the past 48 hours (or since last assessment). Items 5, 6, 8, and 9 are weighted double (scored 0-8; remaining items 0-4). Score range: 0-60.

Educational and training purposes only. Not a substitute for trained clinician assessment.

YMRS Scoring & Severity Levels

Total score = sum of all 11 items (items 5, 6, 8, 9 scored 0-8; remaining items 0-4). Score range: 0-60.

Minimum Clinically Important Difference (MCID)

A change of ≥5–6 points on the YMRS is generally considered clinically meaningful in treatment trials. Response is often defined as ≥50% reduction from baseline; remission as a score ≤12. These thresholds vary by study protocol and clinical context.

YMRS Item Structure

The YMRS covers 11 symptom domains. Four items are weighted double (scored 0–8) to reflect their clinical importance in distinguishing mania severity.

YMRS vs MDQ for Bipolar Assessment

The YMRS and MDQ serve different purposes in bipolar disorder assessment, one measures current mania severity, the other screens for lifetime bipolar disorder history.

Automate YMRS in Your Practice

HiBoop supports digital YMRS administration with automated scoring, severity tracking over time, and integration with your clinical workflow.