A mental state examination (MSE) is a structured description of how a client presents at the time of the interview, written across ten domains: appearance, behaviour, speech, mood, affect, thought form, thought content, perception, cognition, and insight and judgement. Write what you observed and what the client said, not the conclusion you drew from it.

That last sentence is the whole discipline. The MSE is the one part of a clinical record that describes a person's body, dress, speech and manner in writing, which makes it the part most likely to read badly when someone else opens the file. The Royal Children's Hospital Melbourne frames it well in its mental state examination guideline: the MSE "is a part of every mental health assessment" and, where possible, "should be a participatory process".

What are the domains of a mental state examination?

Sources group the domains differently, which is why clinicians trained in different settings write the MSE in different orders. The Royal Children's Hospital guideline uses appearance, behaviour, speech, mood, affect, thought, perception, cognition, and insight and judgement, treating thought as one heading. The StatPearls chapter on the mental status examination splits thought into process and content, and separates motor activity from behaviour.

Neither grouping is wrong. What matters is that every domain is addressed and the reader can tell which is which. A workable ten-domain structure:

Appearance. Build, dress, grooming, distinguishing features, apparent age against stated age.
Behaviour. Manner in the room, eye contact, psychomotor activity, cooperation, rapport, abnormal movements.
Speech. Rate, volume, tone, fluency and quantity, described as heard rather than interpreted.
Mood. The client's own account of how they feel, quoted where possible.
Affect. Observed emotional expression: range, reactivity, congruence with content.
Thought form. How thinking is organised: linear, circumstantial, tangential, loosened associations.
Thought content. Preoccupations, ruminations, overvalued ideas, delusional beliefs, and any suicidal or homicidal ideation.
Perception. Hallucinations, illusions, dissociative or depersonalisation phenomena, and in which modality.
Cognition. Alertness, orientation, attention, memory and abstraction, with the method noted if formally tested.
Insight and judgement. Their understanding of what is happening and the quality of decisions arising from it.

What is the difference between mood and affect?

Mood is subjective and affect is observed. The Royal Children's Hospital guideline defines mood as a "subjective description of how they are feeling" and affect as the "current observed emotional state through non-verbal language". The documentation convention follows from that split: mood is quoted, affect is described.

So mood reads: "flat as a tack, has been for weeks". Affect reads: restricted range, reactive to discussion of her daughter, congruent with reported mood.

Writing "mood: depressed" collapses the two, discards the client's language, and inserts a diagnostic word into a domain that is supposed to hold their words. It is also the single most common thing to fix in supervision.

Is the MSE the same as the mini-mental state examination?

No, and conflating them is a genuine error rather than a matter of style. The MSE is a descriptive framework covering the domains above. The Mini-Mental State Examination (MMSE) is a specific, scored cognitive screening instrument that sits inside one of those domains, cognition, and produces a number out of 30.

There is a practical consequence beyond terminology. The MMSE is a copyrighted, published instrument. Its publisher, Psychological Assessment Resources, states on its permissions and licensing page that its "tests, test protocols, test items, normative data, score reports, and other related materials are copyrighted and may not be reproduced in whole or in part without written permission", that "copyright restrictions prohibit the photocopying of any PAR materials", and that anyone intending to use a test in its entirety must purchase the published version. Practices that circulate a photocopied MMSE, or paste one into a note template, are on the wrong side of that.

Where a freely available screen is appropriate, the Rowland Universal Dementia Assessment Scale is one option: Dementia Australia describes it as "a short cognitive screening instrument designed to minimise the effects of cultural learning and language diversity on the assessment of baseline cognitive performance", and publishes the administration and scoring guide for download. Whichever tool you use, name it and record the score in the cognition domain, rather than writing "cognition intact" with nothing behind it.

What does a written MSE look like?

The following is a fictional example, written as a composite for illustration only.

Appearance: Presented in work clothes, hair uncombed, no other changes in grooming noted since the previous session. Looks the stated age of 34.

Behaviour: Sat forward, brief eye contact, no psychomotor agitation or retardation observed. Cooperative; rapport established within a few minutes.

Speech: Quiet, slow, longer pauses before answering questions about work. Normal in fluency and articulation.

Mood: "Numb, mostly. Not sad exactly, just nothing."

Affect: Restricted in range, reactive when describing his daughter's birthday, otherwise congruent with reported mood.

Thought form: Linear and goal-directed throughout.

Thought content: Preoccupied with redundancy at work and financial consequences. Reported passive thoughts of "not wanting to wake up", present two or three nights a week for the past month. Denied intent, plan, means or preparatory acts. No delusional content elicited.

Perception: No hallucinations reported or observed in any modality.

Cognition: Alert and oriented to time, place and person. Attention sufficient to follow a multi-part question. No formal cognitive testing conducted this session.

Insight and judgement: Recognises the change in his sleep and mood and links it to work stress. Agreed to a follow-up appointment and to contact the practice if the passive thoughts change.

Notice what the example does not do. It does not say "poor hygiene", it says hair uncombed with no other change since last session. It does not say "denies suicidality", it records what was reported and what was specifically asked and denied. Where nothing was tested, it says so rather than implying a normal result.

An MSE captures ideation as an observation at a moment in time. It is not itself a risk assessment or a safety plan, and a thought content line does not discharge whatever risk process your setting requires.

What makes an MSE defensible if the file is reviewed?

For psychologists in Australia there is now a direct answer. The Psychology Board of Australia's code of conduct, which came into effect on 1 December 2025 and carries a mandatory obligation as a condition of registration, sets out in section 8.5 on client records that effective practice includes that you:

"keep accurate, up to date, factual, objective, legible and accessible records that report relevant details of the service provided in a form that can be understood by other practitioners and colleagues"
"ensure that your records show respect for clients and associated parties, and do not include demeaning or derogatory remarks"
"ensure that records are sufficient to facilitate continuity of the service provided"
"make records at the time of events or as soon as possible afterwards"

Read those four against the MSE specifically. "Factual, objective" rules out inference dressed as observation. The prohibition on demeaning or derogatory remarks lands hardest in appearance and behaviour, where words like unkempt, dishevelled, attention-seeking or manipulative are labels rather than descriptions, and read as contempt when the client requests the file. "Sufficient to facilitate continuity" is the test for whether a one-line MSE was ever enough. And "at the time of events or as soon as possible afterwards" is why an MSE reconstructed from memory a week later is the weaker document.

For nurses, social workers, occupational therapists and counsellors the wording of your own code differs, but the substance rarely does. Our guide to how long to keep clinical records in Australia covers the retention side of the same obligation.

Where does the MSE sit in a progress note?

In a SOAP note, the MSE belongs in the objective section, because it is what you observed rather than what the client reported about the week. Mood is the exception that proves the rule: it is quoted, which is why it survives in an objective section at all. Our SOAP notes guide and the comparison of note formats show how the same material moves between SOAP, DAP and BIRP.

The practical question is how much to write every session. A full ten-domain MSE belongs in the intake assessment and in any assessment report. In routine progress notes, most clinicians record a shortened MSE covering the domains that changed, plus mood, affect, thought content and risk every time. What you should not do is carry forward last week's MSE unchanged, which is what copy-paste templates quietly encourage and what makes a file look fabricated when read in sequence.

PractaLuma is AI-native practice management software for Australian mental-health practices, and its clinical notes and AI scribe features draft the MSE structure from the session so the domains are prompted rather than remembered. The clinician still owns every word: an AI draft that infers "anxious affect" from a transcript is exactly the inference the code asks you to replace with what you observed. Pricing is on the PractaLuma homepage.

What are the most common MSE documentation mistakes?

Labels instead of observations. "Poor hygiene", "dishevelled", "attention-seeking". Describe what you saw and let the reader draw the conclusion.
Collapsing mood into affect. One quoted line and one observed line, every time.
Silence read as normality. An omitted perception domain is ambiguous. "No hallucinations reported or observed" is not.
"Denies suicidality" as the whole risk entry. Record what was asked, what was answered, and the ideation, intent, plan and means detail behind it.
Untested cognition described as intact. If you did not test it, say what you observed instead.
The unchanging MSE. Identical wording across six sessions tells a reviewer nothing happened, or that nothing was written.

Frequently asked questions

How long should an MSE take to write? A shortened session MSE is a handful of lines. A full ten-domain MSE for an intake or a report takes longer because it needs specifics, quotes and the method behind any cognitive testing. If your full MSE takes a minute, it is probably a template with the observations left out.

Do I have to use all ten domains every session? No. Full coverage belongs in assessments, reports and any presentation involving significant change or risk. Routine sessions usually carry mood, affect, thought content, risk and whatever else changed. Record that it was an abbreviated MSE so the reader is not left guessing.

Should I quote the client directly? Yes, in mood and often in thought content. Quotation is the most defensible documentation available, because it records what was said rather than what you made of it, and it is what makes the record readable to the client when they exercise their right to access the file.

Can an AI scribe write the MSE for me? It can draft the structure and surface what was said, which removes most of the typing. It cannot observe. Affect, psychomotor activity, eye contact and appearance are not in the audio, so those lines are yours to write and yours to check before the note is finalised.

This article is general information for clinicians, not legal, clinical or regulatory advice. Codes of conduct and record-keeping obligations differ by profession, employer and jurisdiction. Check your own board's current standards and your organisation's policies.

How to Write a Mental State Examination (With Example)