You say “bring me your shoes” and your toddler carries on as if you hadn’t spoken — not defiant, just somewhere else. By 18 to 24 months, most toddlers reliably follow simple one-step directions, so what you’re noticing is a real developmental question, not overthinking. The possibilities range from hearing loss to a receptive language delay to autism, and the pattern of when your child does and doesn’t respond holds most of the clues. Here’s how to read it.
When not following directions is a red flag for autism
Understanding language — receptive language — runs ahead of speaking it. Most babies respond to their own name by 9 to 12 months, follow a simple direction paired with a gesture (like “come here” with open arms) around 12 months, and follow familiar one-step directions without any gesture by 18 to 24 months. A toddler who consistently misses these marks needs three possibilities sorted out. First, hearing: even mild or fluctuating loss from repeated ear infections can quietly erode comprehension, so a formal hearing test comes first. Second, an isolated receptive language delay, where a socially engaged child simply processes language slowly. Third, autism — where the issue is less about decoding words and more about orienting to people in the first place.
The autism pattern has a distinctive shape. The child seems not to hear you — yet spins around at the crinkle of a snack wrapper from another room. They follow routine-embedded directions (shoes by the door at leaving time) but not the same words in a new context. They respond inconsistently to their name, rarely check your face for information, and may not point or follow your point. Selective response tied to interest, alongside reduced name response and limited gestures, is one of the classic early signs of autism. When you see that cluster, request a full developmental evaluation rather than settling for “let’s recheck in six months.”
What to do if you’re worried — and how ABA can help
Book two things: a hearing test with a pediatric audiologist, and a pediatrician visit where you ask for the M-CHAT-R screen (standard at 18 and 24 months) and describe exactly which directions your child does and does not follow. If your child is under 3, self-refer to New Jersey Early Intervention for a free evaluation — receptive language delays qualify for services on their own, no diagnosis needed. At home, strip directions down: get close, say the child’s name, use three words or fewer, add a gesture, and wait a full five seconds before repeating.
If autism is identified, receptive language is one of ABA’s core strengths. A BCBA starts with the foundation — responding to their name, looking when you point — then builds one-step direction following through repeated practice with meaningful rewards, using your actual routines: bath time, snack time, cleanup. Because Autumn ABA delivers therapy in your home, your child learns to follow your instructions in your kitchen, and you learn the techniques between sessions. We serve all of New Jersey, English and Spanish, with no waitlist. Schedule a free consultation or explore our parent resources for more on building understanding at home.
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Schedule a free consultation Our ABA programs →Frequently asked questions
My toddler hears fine — he reacts to the TV and snack bags. Do we still need a hearing test?
Yes, and this exact observation is why. Reacting to high-interest sounds does not rule out hearing problems, because mild or fluctuating loss can pass casual home tests while still degrading speech comprehension — and because selective response to interesting sounds over voices is itself a pattern seen in autism. A formal pediatric hearing test settles the question definitively in one appointment and is required before any receptive language or autism evaluation can be interpreted properly. It is the single fastest piece of the puzzle to lock down.
Could my toddler just be strong-willed or ignoring me on purpose?
True willful ignoring actually requires solid comprehension — a defiant toddler understands the direction, glances at you, maybe grins, and does the opposite. That social awareness is the tell. A child with a receptive language or autism-related difference looks different: no glance, no reaction, no sign the words registered at all, even for appealing requests like “want a cookie?” If your child never seems to process directions rather than refusing them, treat it as a comprehension question and evaluate, not a discipline question.
This page is general educational information, not medical advice. Every child is different — a BCBA can assess your child’s specific needs. Autumn ABA serves families in all 21 NJ counties; see where we provide ABA therapy.