When most parents hear about autism, they usually think about speech delays, social difficulties or lack of eye contact. But scientists studying early development have discovered something surprising: movement may hold some of the earliest clues.
Research reported in the Spectrum section of The Transmitter suggests that motor development — how babies move their bodies — may play an important role in autism development. Understanding this can help parents notice early patterns and support their child's growth.
Motor development is how a baby learns to control and coordinate their body — head control, posture, reaching, sitting, crawling, walking, and grasping — and research suggests it can offer some of the earliest clues to how a child's broader development is unfolding.
Motor difficulties are very common in autism
Motor skills include everyday movements such as rolling, sitting, crawling, walking, grasping toys or coordinating hands and fingers. Studies show that motor challenges are extremely common among autistic individuals.
"Researchers estimate that about 87 percent of autistic people experience some form of motor difficulty."
These difficulties can appear in many ways. Some children may have an unusual walking pattern, while others struggle with balance, coordination or fine motor tasks like writing and using small objects.
Importantly, these motor issues are different from the repetitive movements often associated with autism. They reflect differences in how the brain plans and controls movement.
Be in Charge
Motor and coordination differences can be quiet — often hidden in everyday moments. Knowing how your child is developing early gives you more opportunity to support them.
Know today, through your child's RBSK developmental markers. Objective, from home, in 6 minutes.
Movement differences may appear very early
One of the most interesting discoveries in recent research is how early motor differences can appear. Studies of infants who later receive an autism diagnosis show that differences in fine and gross motor skills can be visible as early as 6 months of age.
Researchers have also observed signs such as:
- Head lag when a baby is lifted
- Floppy arms or poor muscle control
- Difficulty sitting up or maintaining posture
These differences may appear in the first few months of life, long before social or communication differences become obvious. Because motor skills develop earlier than many social behaviours, scientists believe they might provide an early window into developmental changes associated with autism.
Why movement matters for social development
Motor development does more than help babies move — it also shapes how they interact with the world. When babies learn to reach, grasp objects, sit upright or crawl, they gain new ways to explore their surroundings. These experiences help them learn about people, objects and communication.
Researchers suggest that early motor difficulties can create a cascade of developmental effects. If movement is harder, a baby may struggle to:
- Reach for toys
- Explore objects
- Share objects with caregivers
- Coordinate gestures and communication
Over time, these challenges may affect social learning and language development. This does not mean motor difficulties cause autism — but they may influence how other skills develop.
Motor development may help identify autism earlier
Another important finding is that delays in motor milestones sometimes appear before a diagnosis is made. In large studies tracking thousands of children, researchers found that communication and motor development may begin slowing between 9 and 18 months in some children who are later diagnosed with autism.
These early patterns suggest that observing motor development closely could help identify children who may need support earlier.
What parents can take away
Motor development is not usually discussed when parents learn about autism, but research shows it may be an important part of the picture. For parents, this means paying attention to how children move and explore — not just how they talk or interact socially.
Some things to watch include:
Head and posture control
How a baby controls their head and posture when lifted or sitting upright.
Reaching and object handling
How they reach for or manipulate objects around them.
Sitting, crawling, walking
How they progress through sitting, crawling, or walking.
Hand and finger coordination
How they coordinate their hands and fingers during play.
"Every child develops at their own pace, and motor differences alone do not mean a child will develop autism. But understanding movement can help parents and professionals build a more complete picture of development."
How Hidden Hum empowers you, the parent
Because early developmental changes can be subtle, simply relying on memory often makes it difficult for parents or clinicians to understand when differences first appeared. This is why structured developmental monitoring is increasingly encouraged as part of routine child health.
Clinically established tools like Hidden Hum enable parents to use structured developmental frameworks to create a baseline of their child's development in areas such as motor skills, communication and social engagement — in just a few minutes.
Rather than replacing clinical evaluation, monitoring via Hidden Hum works like growth charts for development — creating a consistent record across years. It helps parents and clinicians understand how a child's abilities are unfolding over time, so that essential support is extended before behavioural variations begin to set in.
Be in Charge
Motor and coordination differences can be quiet — often hidden in everyday moments. Knowing how your child is developing early gives you more opportunity to support them.
Know today, through your child's RBSK developmental markers. Objective, from home, in 6 minutes.
Frequently asked questions
Can motor development differences be an early sign of autism?
Yes. Research suggests that differences in motor development can appear before many social or communication signs of autism. Some infants who later receive an autism diagnosis show early differences in movements such as head control, posture, reaching, or coordination as early as six months of age.
What motor difficulties are common in autistic children?
Motor difficulties in autistic children may include challenges with balance, coordination, posture, walking patterns, and fine motor skills like grasping objects or writing. Studies estimate that around 87 percent of autistic individuals experience some form of motor difficulty.
At what age can motor differences related to autism appear?
Motor differences can sometimes appear in the first months of life. Researchers have observed signs such as head lag, floppy arms, or difficulty maintaining posture as early as six months in some infants who later receive an autism diagnosis.
How does motor development influence social and communication skills?
Motor development helps babies explore their environment. Skills such as reaching, sitting, crawling, and grasping allow infants to interact with objects and people. When movement is more difficult, it may limit opportunities for exploration, which can influence social learning and early communication development.
Do motor delays mean a child will develop autism?
No. Motor delays alone do not mean a child will develop autism. Many children develop at different speeds. However, observing motor development can help parents and professionals notice patterns that may benefit from early developmental support.
What early motor signs should parents watch for in infants?
Parents can observe how their baby controls their head and posture, reaches for objects, grasps toys, sits or crawls, and coordinates their hands and fingers. Consistent developmental monitoring helps track how these abilities evolve over time.
Why is tracking early development important for autism detection?
Tracking development helps identify subtle changes that may not be obvious in day-to-day observations. Structured developmental monitoring creates a timeline of a child's progress, which can help clinicians and parents identify early patterns and provide support sooner if needed.
How can parents monitor their child's developmental milestones?
Parents can monitor milestones by observing how their child moves, communicates, and interacts during daily activities. Structured developmental tools such as Hidden Hum allow parents to quickly record developmental observations and build a baseline that helps track changes over time.