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Early Signs of Selective Mutism in a 6-to-9-Month-Old
Selective Mutism cannot be identified in a 6-to-9-month-old — it is an anxiety-based difficulty where a child who can already speak stays silent in certain settings, recognised only after speech develops (usually after age 3). At this age, watch instead for healthy early communication: babbling, responding to her name, eye contact and shared attention. Only a clinician can assess development.
In this answer 5 sections
A baby's first sounds are her first conversations with you — so it's natural to wonder what early quietness might mean. Let's gently set your mind at ease.
In short
Selective Mutism cannot be identified in a 6-to-9-month-old — it is an anxiety-based difficulty where a child who can speak consistently does not speak in certain social settings (like school), and it is only recognised once a child has developed spoken language, usually after age 3. At 6–9 months your baby is still in the babbling and pre-verbal stage, so there are no "early signs" of Selective Mutism to look for. What matters now is watching the lovely building blocks of early communication — and these are wonderfully observable at this age.
Why Selective Mutism doesn't apply yet
Selective Mutism (ICD-11 6B06) is diagnosed when a child speaks freely in comfortable settings (often at home) but reliably stays silent in specific situations, and this clearly interferes with learning or social life. By definition it needs an established ability to talk — something a 6-to-9-month-old has not yet reached. So a quiet, watchful, or shy baby at this age is not showing Selective Mutism, and no parent should carry that worry now.
What IS worth watching at 6–9 months
Instead of looking for a later anxiety condition, enjoy and gently track these early communication milestones:
- Babbling — repeated sounds like "ba-ba", "da-da", "ga-ga"
- Responding to her name and turning toward your voice
- Eye contact and social smiling during play and feeding
- Shared attention — looking where you look, enjoying peek-a-boo
- Gestures emerging — reaching, beginning to wave
- Reacting to sounds — quieting or turning to a new noise
If you notice your baby does not respond to sounds or her name, makes very few or no babbling sounds, or seems not to seek eye contact across several weeks, that is worth a general developmental and hearing check — not because of Selective Mutism, but to support her hearing and early communication early and gently.
The Pinnacle way
At Pinnacle Blooms Network, we support early communication through warm, play-based speech therapy and family coaching, and we hold space to revisit any worry as your child grows. You can read more about how this difficulty presents later in childhood on our Selective Mutism page. A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre under qualified clinician care — never from an online list. With 4.95 lakh+ families served, we focus on what your baby can build next.
Trusted sources
Aligned with WHO ICD-11 (6B06, Selective Mutism), American Academy of Pediatrics and HealthyChildren.org guidance on early communication milestones, and ASHA resources on infant language development.
Next step — if you'd simply like reassurance about your baby's babbling, hearing or early communication, book a gentle developmental screen with the Pinnacle team on WhatsApp: +91 91001 81181.
This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.
CONNECT THE ANSWER TO YOUR CHILD’S DAY
Something to notice. Something to discuss.
What to notice
Selective Mutism is not relevant at this age. Do seek a general developmental and hearing check if, across several weeks, your baby does not respond to sounds or her name, makes very little or no babbling, or does not seek eye contact.
In everyday life
Talk, sing and pause often during play and feeds — when your baby babbles back, copy her sounds warmly. This back-and-forth 'conversation' is the foundation of all later speech.
Bring your observations and questions to your child’s professional. Choose activities that suit your child’s comfort, abilities and agreed plan.
Bring your questions to a first visitQuestions families ask
Can Selective Mutism be diagnosed in a baby?
No. Selective Mutism is an anxiety-based difficulty where a child who can already speak stays silent in specific settings. It needs an established ability to talk, so it is only recognised once spoken language has developed — usually after age 3, not in infancy.
My 8-month-old is very quiet — should I worry about Selective Mutism?
Not at all. Quietness at 8 months is not Selective Mutism. At this age, simply enjoy and watch the early signs of communication — babbling, responding to her name, eye contact and shared play. If she does not respond to sounds across several weeks, ask for a hearing and developmental check.
When does Selective Mutism usually appear?
It typically becomes noticeable around ages 3 to 6, often when a child starts preschool or school and reliably speaks at home but stays silent in those settings. If a worry persists as your child grows, a developmental check can help.
FOLLOW THE SOURCE
References behind this answer.
- Organisation website · further readingWHO ICD-11: Selective Mutism
- Organisation website · further readingHealthyChildren.org: early communication milestones
- Organisation website · further readingASHA: infant language development
References are supplied with this answer. An organisation homepage offers further reading; it does not establish an independent review of this page.
Content attribution: SETU Consortium · Pinnacle Blooms Network.
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