Selective Mutism
Standardised tools for assessing Selective Mutism in early childhood
There is no single test for Selective Mutism. Assessment is multi-informant and multi-setting: the Selective Mutism Questionnaire (SMQ) and School Speech Questionnaire (SSQ) are the core standardised tools, supported by anxiety screens, a speech-language and hearing evaluation, and direct observation to rule out hearing loss, language disorder and autism.
Selective Mutism is recognised not in the consulting room alone, but across the settings where a child does — and does not — speak.
In short
There is no single diagnostic "test" for Selective Mutism (ICD-11 6B06); assessment is a structured, multi-informant process. The most established standardised instrument is the Selective Mutism Questionnaire (SMQ) — a parent-rated measure of speech across home, school and social settings — supported by the School Speech Questionnaire (SSQ) for the educational context. These sit within a broader developmental and anxiety profile, since SM is classified among the anxiety and fear-related disorders.The science
Best-practice assessment triangulates information across raters and environments:- SMQ — frequency of speech with family, at school, and in social/public settings; sensitive to change over treatment.
- SSQ — teacher-reported communication in the classroom, capturing the setting where mutism most often presents.
- Anxiety screens (e.g. parent- and clinician-rated childhood anxiety measures) to map co-occurring social anxiety.
- Speech-language and hearing evaluation to confirm that expressive ability is intact when the child is comfortable, ruling out a primary communication disorder.
- Direct behavioural observation across familiar and unfamiliar settings.
Differential clarity matters: rule out hearing loss, an underlying language disorder, autism, and recent migration with limited language exposure before attributing silence to SM.
The Pinnacle way
A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from a questionnaire score alone. Our multidisciplinary teams pair these standardised tools with graded speech therapy and a coordinated plan for Selective Mutism.Trusted sources
WHO ICD-11 (6B06); ASHA guidance on Selective Mutism assessment; NICE social-anxiety guidance.Next step — Partner with a Pinnacle clinician to structure a multi-setting SM assessment for your young patient.
This is general information, not a diagnosis — a clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre under qualified clinician care.
What to watch
Watch for a child who speaks freely at home but is consistently silent at school or with unfamiliar adults for more than a month, beyond the first weeks of a new setting — and confirm expressive ability is intact when the child is at ease.
Try this at home
Gather speech samples or short reports from both home and school before assessment — multi-setting data is what distinguishes Selective Mutism from a general language or hearing concern.
Trusted sources
Developed by SETU Consortium · Pinnacle Blooms Network · Last reviewed 2026-06-10 · reviewed every 365 days
This is general information, not a diagnosis. A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care.
Frequently asked
Is the SMQ sufficient to diagnose Selective Mutism?
No. The Selective Mutism Questionnaire is a validated rating scale that quantifies speech across settings and tracks change, but diagnosis requires clinical judgement integrating multi-informant report, observation, and exclusion of hearing loss, language disorder and autism.
Why include a hearing and speech-language evaluation?
To confirm that the child's expressive language and hearing are intact when they are comfortable. This rules out a primary communication disorder and ensures the silence reflects anxiety-related selectivity rather than an underlying language deficit.
How is Selective Mutism distinguished from social anxiety?
They frequently co-occur, and SM sits within the anxiety and fear-related disorders in ICD-11. Anxiety screens map the social-anxiety profile, while the SMQ and SSQ capture the defining feature: consistent failure to speak in specific settings despite speaking elsewhere.