Parents naturally pay close attention to how their toddlers communicate, play, and interact with the people around them. Between 18 months and 3 years, children can develop rapidly, and differences in communication or social interaction may sometimes become easier to notice. Certain patterns can be useful to discuss with a pediatrician or developmental professional, particularly when several concerns appear together.
These observations cannot diagnose autism on their own. Children develop at different rates, and individual behaviors can have many explanations. However, looking at several areas of development together can help parents decide whether professional guidance or a broader developmental evaluation may be appropriate.
1. Does Your Child Use Eye Contact to Communicate
Eye contact is not simply about whether a child looks at another person. An important part of social communication is how a child uses their gaze to share information, excitement, feelings, or requests.
For example, a toddler might notice an interesting dog at the park, look at the dog, and then look back at a parent as if inviting them to notice it too. A child may also look toward a parent after discovering something exciting or glance between a desired object and an adult when they need help. These moments show that looking can be part of communication.
Some children who have autism may make eye contact, but their use of eye contact for social communication can be different. They may not consistently look back to share an experience or communicate that they need assistance. The important point is not whether a child makes eye contact at all, but how that eye contact functions within everyday interaction.
2. What Does Your Child’s Play Look Like
Play changes considerably during the toddler years. Younger children often explore objects by touching, banging, moving, or examining them. As they approach the second year of life, early pretend play can begin to appear.
A toddler might pretend to drink from an empty cup, hold a toy phone to their ear, or involve a parent in a simple pretend activity. Over time, play can become more imaginative, with toys being given roles and characters acting out different situations.
Some children with autism may show less pretend play or may become especially interested in repeating particular actions. They might line up toys in a specific arrangement, repeatedly spin parts of objects, or focus strongly on one feature of a toy. Repeated play alone does not establish a diagnosis, but patterns in how a child plays can be useful information to share with a professional.
3. Does Your Child Share Things Just to Share
There is an important difference between asking for assistance and sharing an experience. A toddler may bring a broken toy to a parent because they want help fixing it. Another type of communication happens when a child brings over something interesting simply because they want another person to notice it.
For example, a child might discover that a toy lights up, point toward it, look at a parent, and then activate it again while checking whether the parent is watching. Similar behavior might happen when a toddler sees an interesting bird, vehicle, or object outside.
Parents can observe whether their child regularly tries to bring them into these small moments of discovery. Differences in this type of social sharing can be worth discussing with a developmental professional, especially when they occur alongside other communication differences.
4. Does Your Child Follow Your Point or Gaze
Communication works in both directions. Children not only show adults what interests them but also gradually learn to understand what adults are trying to share.
A parent might point toward something across a room and say that it is interesting. A child who follows the pointing gesture may look toward the object and understand that the parent is directing their attention there. This ability is part of shared attention.
Some children may have difficulty following another person’s pointing or gaze. They may look at the person’s hand instead of the object or may not respond to the attempt to direct their attention. Observing these everyday moments can provide useful information about a child’s social communication.
5. Is Your Child Using Different Gestures
Gestures are an important part of early communication. Toddlers may wave goodbye, shake their heads, point toward something they want, raise their arms to be picked up, clap, blow kisses, or use other movements to express themselves.
Gestures often become even more meaningful when they are combined with sounds, words, facial expressions, or eye contact. For example, a toddler might point toward something while looking at a parent and making a sound to attract their attention.
Some children may use fewer gestures or use them less consistently. Others may use gestures without naturally combining them with other forms of communication. These patterns are worth observing as part of the child’s overall development rather than judging from one isolated behavior.
6. Does Your Child Respond to Their Name
Toddlers can become deeply absorbed in toys and activities, so occasionally missing their name is not necessarily concerning. The more useful observation is whether the child generally responds when their name is called in everyday situations.
A child may stop playing, look toward the person calling them, or otherwise acknowledge that someone is trying to get their attention. If a child regularly does not respond even after their name is called several times, parents may want to take note of the pattern.
Hearing should also be considered because difficulty responding to a name can have causes unrelated to autism. A hearing assessment can help rule out hearing difficulties before parents draw conclusions about the child’s communication or development.
Looking at the Bigger Picture
No single behavior in this list can determine whether a child is autistic. Children have different personalities, communication styles, developmental timelines, and strengths. Even when a child shows one or more of these behaviors, it does not automatically mean that they have autism or another developmental condition.
What matters more is the overall pattern and whether there are persistent differences across communication, social interaction, play, and everyday behavior. Parents who have ongoing concerns can write down specific examples and discuss them with their child’s pediatrician. A healthcare professional can consider the child’s complete developmental history and determine whether further assessment would be helpful.
Early observation is not about labeling a child. It is about understanding how a child communicates and learns so that families can seek appropriate support when it is needed.
