6-to-9-month-old
Is My 6-to-9-Month-Old Developing Normally Emotionally?
Between 6 and 9 months, most babies smile and laugh with familiar people, show clear feelings, prefer their parents and may begin to show stranger awareness — a healthy sign of attachment. There's a wide normal range. Seek a developmental check if your baby rarely smiles or shares joy, isn't soothed by you, shows very limited eye contact or expression, or has lost social warmth. This is reassurance and early observation, not a diagnosis.
Those first big belly-laughs, the reaching-up-to-be-held, the wobbly lip when you step away — this is your baby's emotional world blooming, right on time.
In short
Between 6 and 9 months, most babies are becoming wonderfully social and expressive — they smile and laugh with familiar people, show clear preferences for parents, and may begin to feel uneasy around strangers. This emerging caution, far from being a worry, is usually a healthy sign that your baby knows and trusts you. There is a wide, normal range here; gentle reasons to seek a developmental check are listed below — none of them is a diagnosis, simply a wise, early look.What's typical at 6–9 months emotionally
Every baby grows at their own pace, but around this age you'll often see your little one:- Smile and laugh readily with familiar faces, and enjoy back-and-forth play like peekaboo.
- Show feelings clearly — delight, frustration, contentment — through face, voice and body.
- Prefer familiar people and reach or lean towards you to be picked up.
- Show early stranger awareness — going quiet, clinging or fretting with new people. This usually emerges between 6 and 10 months and is a healthy sign of attachment.
- Respond to your tone — settling when you soothe, brightening when you're playful.
- Use you as a safe base — checking back to your face when something is new or surprising.
Gentle flags worth a check
These mean a clinician's calm look is wise now — not that anything is wrong:- Little or no smiling, laughing or shared joy with familiar people.
- Doesn't seem to show or seek comfort, or isn't soothed by your voice and touch.
- Very limited facial expression, eye contact or response to your interaction.
- Doesn't seem to recognise or prefer familiar carers.
- Loss of social warmth or skills your baby once had.
Trust your instinct — what you notice every day is valuable information, and early support works beautifully at this age.
The Pinnacle way
A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from an online list. Our team looks at your baby's whole picture of strengths and connection, shaped gently around play. You can begin with a calm [developmental assessment](/) or explore how our occupational therapy team supports early emotional regulation and bonding.Trusted sources
CDC developmental milestones and "Learn the Signs, Act Early" guidance on social-emotional development in infants; American Academy of Pediatrics (healthychildren.org) on emotional milestones and stranger anxiety; WHO Nurturing Care Framework on responsive caregiving.Next step — Trust what you've noticed. [Book a developmental check](/) with a Pinnacle clinician for a warm, clear review of your baby's emotional milestones.
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
Seek a check if your baby rarely smiles, laughs or shares joy with familiar people, isn't soothed by your voice or touch, shows very limited eye contact or facial expression, doesn't seem to recognise familiar carers, or has lost social warmth once present. Stranger anxiety itself is healthy and expected.
Try this at home
Play face-to-face games like peekaboo each day and pause to let your baby respond — their smiles, reaches and little sounds back to you are emotional development in action, and they love your delighted reply.
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 stranger anxiety at 6–9 months normal?
Yes — going quiet, clinging or fretting around new people usually emerges between 6 and 10 months and is a healthy sign that your baby knows and trusts familiar carers. It typically settles with gentle, unhurried introductions.
My baby doesn't smile much at others — should I worry?
Some babies are simply more reserved, but if your baby rarely smiles, laughs or shares joy even with you, isn't soothed by your comfort, or shows very limited eye contact, a calm developmental check is wise — not a diagnosis, just an early, loving look.
How can I support my baby's emotional development?
Respond warmly and promptly to their cues, play face-to-face games, name feelings gently, and let your baby use you as a safe base. Responsive, loving caregiving is the most powerful support at this age.