How a Child's Motor Development Is Assessed

Watching your little one reach, roll, sit and step is a window into how their body and brain are growing together — and a gentle, structured check makes sure they have everything they need to thrive.

In short

A child's motor development is assessed by carefully observing how they use both their big muscles (gross motor — rolling, sitting, crawling, walking, running) and their small muscles (fine motor — grasping, pointing, stacking, drawing). A trained clinician compares what your child does against typical milestones for their age, watches how they move (strength, balance, coordination, symmetry), and listens to your everyday observations. It is a warm, play-based process — nothing painful or frightening — designed to celebrate strengths and spot where a little extra support might help.

How motor skills are assessed

• Developmental history — the clinician asks about pregnancy, birth, milestones reached, and your day-to-day observations. You know your child best, and your input is central.
• Structured observation through play — reaching for toys, tummy time, sitting balance, crawling, walking, climbing, stacking blocks or holding a crayon. Each activity reveals a different skill.
• Quality of movement, not just milestones — clinicians look at muscle tone (floppy or stiff), posture, balance, coordination, and whether both sides of the body move evenly.
• Standardised milestone frameworks — recognised tools and milestone charts help compare progress with typical age ranges, so observations are objective and consistent.
• A whole-child view — motor skills connect with vision, attention and play, so assessment considers how everything works together.

The goal is never to label your child but to understand how their body learns to move, so support — if any is needed — fits them perfectly.

When to seek a check

If your child seems noticeably behind peers in head control, sitting, crawling or walking, has muscles that feel unusually floppy or stiff, uses one side of the body much more than the other, or loses a skill they once had, a developmental check is wise. An early review helps a clinician tell apart simply needing a little more time from a delay that benefits from targeted support.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app or online form. Our clinician-administered structured assessment builds a precise, strengths-based movement profile, and where helpful our physiotherapy team shapes a play-based plan around your child. You can learn more about how we support families across 70+ centres in 4 states.

Trusted sources

The WHO International Classification of Functioning, Disability and Health (ICF) frames movement under neuromusculoskeletal and movement-related functions, helping clinicians describe how a child moves and participates in everyday life. CDC milestone resources and American Academy of Pediatrics guidance also inform age-appropriate motor expectations.

Next step — Curious how your child is moving and growing? Book a developmental assessment with a Pinnacle clinician.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.