3-to-6-month-old
Should I get my 3-to-6-month-old assessed for development?
For most babies aged 3 to 6 months, a developmental check is a normal, reassuring part of care rather than a worry — there is no meaningful test for autism or ADHD at this age, so a clinician simply observes how your baby moves, looks, listens and connects. Routine paediatric reviews are usually enough; seek a check sooner if you notice no smiles or eye contact, no following of sound or objects, very stiff or floppy posture, or any loss of skills. A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre under qualified clinician care.
At three to six months, your baby is busy discovering the world — and a gentle check is about celebrating progress, not chasing problems.
In short
For most babies aged 3 to 6 months, a routine developmental check is something to welcome rather than worry about — it's a normal part of looking after your little one, not a sign that anything is wrong. At this age there is no meaningful test for autism, ADHD or learning differences; instead, a clinician simply watches how your baby is growing, moving, looking, listening and connecting. If your baby is meeting their everyday milestones and you have no specific concern, your regular paediatric reviews are usually enough. If something does feel different to you, a friendly developmental check brings reassurance and an early start if any support is helpful.What is appropriate to observe at 3–6 months
This is a stage of lovely, observable change. Gentle things to enjoy and notice:- Connection — smiling back at you, watching faces, calming to your voice, beginning to coo and make sounds.
- Looking and listening — following a moving toy with their eyes, turning toward sounds and voices.
- Movement — steadier head control, pushing up on the tummy, reaching for and grasping objects, bringing hands to the mouth, and from around 4–6 months beginning to roll.
- Feeding and settling — feeding comfortably and developing more settled sleep patterns.
Babies vary, and milestones arrive across a range of weeks, not on a fixed day. A check at this age is observational and reassuring — never a label.
When a check is worthwhile sooner
Do arrange a developmental check (and speak to your paediatrician) if you notice: no smiles or eye contact by around 3 months, not following objects or turning to sound, very stiff or very floppy posture, hands kept tightly fisted most of the time, not bringing hands together, or a loss of skills your baby once had. Any concern about hearing or vision deserves prompt review. Trusting your own instinct as a parent is always valid.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 app, a checklist or an online form. At this age our role is gentle observation and reassurance, with an [early developmental check](/) and, where useful, a clinician-administered AbilityScore® assessment that tracks how your baby is growing across communication, movement and connection. If early support is ever helpful, our early intervention programme is built around play and your bond with your baby.Trusted sources
American Academy of Pediatrics (HealthyChildren.org) guidance on infant developmental milestones and well-baby visits; CDC milestone guidance for infants; WHO Nurturing Care framework for early childhood development.Next step — Want simple peace of mind about your baby's development? Book a gentle early developmental check with a Pinnacle clinician.
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 sooner if there are no smiles or eye contact by around 3 months, no following of moving objects or turning to sound, very stiff or very floppy posture, hands kept tightly fisted most of the time, or any loss of skills your baby once had. Any concern about hearing or vision needs prompt review.
Try this at home
Spend short, daily face-to-face moments — smile, talk softly, and pause to let your baby coo back. This playful 'serve and return' is both a joy and a natural way to notice how your baby is connecting.
Trusted sources
Developed by SETU Consortium · Pinnacle Blooms Network · Last reviewed 2026-06-10
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
Can autism or ADHD be diagnosed at 3 to 6 months?
No. At this age there is no meaningful test for autism, ADHD or learning differences. A developmental check at 3–6 months simply observes how your baby moves, looks, listens and connects — these conditions are recognised much later, and a check now is purely reassuring and observational.
Is a developmental check necessary if my baby seems fine?
If your baby is meeting everyday milestones — smiling, following objects, turning to sound, gaining head control — and you have no specific concern, your routine paediatric well-baby reviews are usually enough. A separate check is most useful when something feels different to you.
What should I watch for at 3 to 6 months?
Enjoy seeing smiles, eye contact, following moving toys, turning to sound, steadier head control and reaching for objects. Speak to a clinician sooner if there are no smiles or eye contact by around 3 months, no response to sound, very stiff or floppy posture, or a loss of skills.
What happens during an early developmental check?
A qualified clinician gently observes your baby's communication, movement, vision, hearing and connection, and talks with you about how things are going at home. It is calm, play-based and reassuring — and if any early support is helpful, a plan is built around play and your bond with your baby.