5.0Google review
He helped me make a plan, pass on my first attempt, got me then through all my clinical rotations to pass my Shelf exams on the first try, got me a good Step 2 score, coached me on my Interview season…
— Tim S.
The psychiatry shelf is the NBME Psychiatry Subject Exam, 110 questions in 2 hours 45 minutes. Behavioral health is 65–70% of it, the most concentrated outline of any shelf, and the physician tasks split into only two parts: diagnosis, including foundational science, at 65–70%, and pharmacotherapy, intervention and management at 30–35%.
So the exam asks two questions again and again: which disorder is this, and what do you do about it? Getting the diagnostic criteria exact and knowing the medications well covers most of the test.
How long the psychiatry shelf is
The Psychiatry subject exam is 110 questions in 2 hours and 45 minutes, and a web-delivered exam starts with a tutorial that adds 15 minutes (NBME subject exam timing chart). That is 90 seconds a question, the same pace as Step 1 and Step 2 CK, so a timed block of 20 questions in 30 minutes is good practice. Some questions may be unscored field-test items (NBME Subject Exam Program Guide); you cannot tell which, so treat every question as live.
How the psychiatry shelf is scored
NBME reports an equated percent correct (EPC) score on a 0 to 100 scale, meant to represent the percentage of the content you have mastered. NBME does not set a passing score for the shelf. Your clerkship director does, using NBME grading guidelines that are reviewed every two to three years, so the score for a pass or honors depends on your school (NBME Subject Exam Program Guide). Results often reach your school the day after the testing window closes, and can take up to three business days; you see yours in INSIGHTS through the MyNBME examinee portal.
For practice, the psychiatry forms in NBME’s Clinical Science Mastery Series are 50 questions in 1 hour 15 minutes, and each score report includes a table converting your result to the approximate subject exam scale (NBME Clinical Science Mastery Series). Ask your clerkship coordinator what EPC your school treats as a pass and as honors, then use the forms to see where you stand. Our shelf percentile guide explains how percentiles and EPC scores relate.
What psychiatry shelf questions look like
A psychiatry question usually describes a person over time: weeks of low mood, months of odd beliefs, years of a pattern in relationships. The time course is often what separates the right answer from a close second.
Treatment questions ask for the first-line drug, what to do when it fails, or what has gone wrong when a patient on a medication develops new symptoms. Emergencies such as suicidal intent or severe withdrawal change the answer to safety first.
What the Psychiatry shelf covers
These are the ranges from NBME's Psychiatry outline. See the outline.
| By system | Share of exam |
|---|---|
| Behavioral health | 65–70% |
| Nervous system and special senses | 10–15% |
| General principles and care of the well patient | 5–10% |
| Other systems, including multisystem disorders | 5–10% |
| Social sciences: communication and ethics | 1–5% |
| By physician task | Share of exam |
|---|---|
| Diagnosis, including foundational science concepts | 65–70% |
| Pharmacotherapy, intervention and management | 30–35% |
Under behavioral health NBME lists normal responses to stress and illness, psychotic, anxiety, mood, somatic symptom, factitious, eating and impulse control, childhood-onset, personality, psychosocial and substance use disorders, and adverse effects of drugs. By site of care the exam is ambulatory 60–65%, emergency department 20–30% and inpatient 5–10%, and patients 13 and older make up 85–90% of questions.
High-yield areas on the psychiatry shelf
- Mood disorders: major depression and bipolar disorder, and telling them apart.
- Psychotic disorders and the time criteria that separate them.
- Anxiety, obsessive-compulsive and trauma-related disorders.
- Substance use: intoxication and withdrawal syndromes for the common substances, and which ones are dangerous.
- Psychopharmacology: first-line drugs and their serious side effects, from movement disorders and neuroleptic malignant syndrome to serotonin syndrome and lithium toxicity.
- Personality disorders by cluster.
- Childhood-onset disorders such as ADHD and autism, plus eating disorders.
- Somatic symptom, factitious disorder and malingering, and the questions that test the difference.
- Medical causes of psychiatric symptoms, since the nervous system is another 10–15% of the exam.
A closer look at criteria and medications
Criteria. Behavioral health is 65–70% of this exam, and many disorders share symptoms and differ mainly by duration, number of symptoms or cause. A one-page sheet of time criteria, checked against DSM-5-TR, prevents a large share of errors.
Medications. With management at 30–35%, know each common drug class by its first-line use, its serious side effects and its interactions. The most-tested questions are about the side effect, not the indication.
Common mistakes on the psychiatry shelf
- Getting the duration wrong. Many disorders differ mainly by how long symptoms have lasted.
- Treating before ruling out a medical or substance cause of the symptoms.
- Knowing the drug but not its side effects, which is where many management questions are written.
- Confusing somatic symptom disorder, factitious disorder and malingering, which turn on intent and gain.
- Choosing a long-term treatment when the vignette describes an emergency that needs safety first.
Test-day tips for the psychiatry shelf
- Find the time course in the vignette before naming a disorder.
- Rule out a medical or substance cause when the question allows it.
- When a patient on medication gets worse, think side effect first.
- If safety is at risk, the safe action comes before long-term treatment.
How to study for the psychiatry shelf during the rotation
Psychiatry rotations give you long interviews and time to read, which suits an exam built on precise criteria. We pair each patient you interview with that disorder's criteria and first-line treatment, so the definitions become real cases.
Early on we build a clean framework for each category of disorder. Later we drill medications and side effects, then move to timed mixed blocks and practice forms, reviewing every miss by whether it was a diagnosis error or a treatment error.
A sample week of psychiatry shelf prep with us
- Early days: mood and psychotic disorders, with the patients you interview as worked examples.
- Midweek: anxiety, personality and substance disorders.
- Late week: medications and side effects, drilled as short question sets.
- Weekend: a mixed timed block and a review session on any criteria you mixed up.
After each psychiatry practice form, ask
- Was each miss a criteria error or a medication error?
- Did I get the duration of symptoms right?
- Did I rule out a medical or substance cause first?
- Did I recognise the serious side effect in the question?
- Did I choose safety first in an emergency?
Where the psychiatry shelf leads
Mental health is tested again on Step 2 CK and COMLEX Level 2-CE: NBOME's Level 2-CE blueprint sets the nervous system and mental health at a minimum of 10%. The criteria and medications you learn here are the same ones those exams ask about.
The psychiatry rotation also trains communication and ethics questions, such as capacity and confidentiality, which appear on every licensing exam.
Study resources for the psychiatry shelf
Psychiatry practice forms are part of NBME's Clinical Science Mastery Series, 50 questions for $21 each. We tag every miss on them as a criteria error or a medication error, since those are the two halves of this exam.
The diagnostic criteria on the exam come from the American Psychiatric Association's DSM-5-TR. Add a question bank, your clerkship reading and an Anki deck built around duration criteria and medication side effects.
Who tutors the psychiatry shelf
Our psychiatry shelf prep is led by Dr. Shauhin “Sean” Moazezi, DO, with Alexandra Llovet for osteopathic students preparing for COMAT exams through their rotations; the review below describes that work.
COMAT and rotation prep with Alexandra
“…After passing COMLEX Level 1, I continued working with Alex throughout my clinical rotations. We still meet several times a month to prepare for COMAT exams and continue strengthening my test-taking skills. She has an amazing ability to take complex concepts and make them easy to understand.”
— M, Google review, June 2026