When a child has a developmental delay, parents and professionals often face a difficult question: should we wait and see if speech develops, or introduce AAC now?
The research is clear. Waiting is the riskier choice.
Children with developmental delays who receive AAC early show better communication outcomes than those who wait for speech to emerge on its own (Romski & Sevcik, 2005). AAC doesn't block speech development. It supports it. And the earlier it starts, the better.
What Developmental Delay Means for Communication
Developmental delay is a broad term. It means a child is not meeting milestones at the expected age in one or more areas: motor skills, cognitive ability, social-emotional development, or communication. Sometimes the delay is global, affecting everything. Sometimes it's specific to one domain.
For communication specifically, delay might look like:
- A 2-year-old with no words
- A 3-year-old using only 10 to 15 single words
- A 4-year-old who understands language but can't produce it reliably
- A child of any age whose speech is so unclear that only family members understand them
The causes vary widely: genetic conditions, prematurity, brain injury, environmental factors, or unknown reasons. In many cases, the underlying diagnosis is still being determined when communication delays become apparent.
The cause matters for long-term planning, but it doesn't change the immediate need. A child who can't communicate effectively right now needs tools to communicate right now.
The "Wait and See" Problem
Many families are told to wait. "He's a late talker." "She'll catch up." "Let's give it six more months." Sometimes this advice comes from pediatricians, sometimes from well-meaning family members.
The problem is that communication delays don't just affect speech. They affect everything.
A child who can't communicate their needs gets frustrated. That frustration often comes out as behavior: tantrums, hitting, biting, withdrawing. A child who can't participate in social interactions with peers falls behind socially. A child who can't ask questions or comment on their world misses out on the back-and-forth exchanges that build language and cognitive skills.
Every month of waiting is a month where the child practices being a non-communicator instead of a communicator.
The No Prerequisites Myth
One of the most persistent myths about AAC is the idea that a child needs certain skills before they can start. You may hear things like:
- "They need to understand cause and effect first"
- "They need to be able to point reliably"
- "They should demonstrate communicative intent"
- "They need a certain cognitive level"
None of these are true. Research has repeatedly shown that there are no cognitive or other prerequisites for AAC (Kangas & Lloyd, 1988; Reichle, 1991). Children learn communication by being given communication tools and having those tools modeled for them, not by passing readiness tests first.
Think about how typically developing children learn to talk. Nobody tests a 6-month-old for "readiness" before talking to them. Parents simply talk, and the child learns from immersion. AAC works the same way. You give the child access to the system and model it in natural contexts. Learning follows.
What about children with significant cognitive delays?
Even children with significant intellectual disability benefit from AAC. The vocabulary may be smaller and more concrete. The grid layout may be simpler. Progress may be slower. But communication access is a right, not a reward for meeting developmental benchmarks.
A child who learns to press one button to say "more" at snack time has gained genuine communicative power. That single word changes their relationship with the world.
Choosing Vocabulary for Different Levels
The vocabulary you start with should match what the child is motivated by, not what they can cognitively "handle" based on standardized testing.
For children functioning at a 6 to 12 month level
Focus on early communicative functions:
- Requesting: "more," "want"
- Rejecting: "no," "stop," "all done"
- Social interaction: "hi," "bye"
Use a simple layout. A 2x2 grid with four high-frequency words is plenty. Pair every button press with the natural consequence (they press "more" and immediately get more of the preferred item).
For children functioning at a 12 to 24 month level
Add descriptive and action words:
- Actions: "go," "open," "help," "eat," "play"
- Descriptions: "big," "hot," "yummy," "uh oh"
- People: "mama," "dada," names of siblings or pets
A 3x3 or 4x4 grid gives them room to grow. At this level, start modeling two-word combinations: "want more," "go play," "help open."
For children functioning at a 24 to 36 month level
Expand into core vocabulary:
- Pronouns: "I," "you," "my"
- Questions: "what," "where"
- Prepositions: "in," "on," "up"
- Feelings: "happy," "sad," "mad," "scared"
A larger grid (5x5 or more) with consistent motor patterns becomes important here. The child is building language, and a robust vocabulary system supports that growth.
How to Start: A Practical Plan
Step 1: Get an AAC system in place
Download SabiKo and set up a basic grid. Don't spend weeks choosing the perfect system. Start with something now and adjust as you learn what your child responds to.
Step 2: Pick 3 to 5 starter words
Choose words that are:
- Useful across multiple activities (not just one situation)
- Connected to things your child is motivated by
- Functional (they help the child get something, stop something, or control something)
Good starter sets:
| Child's interest | Starter words |
|---|---|
| Food motivated | more, want, eat, all done, yummy |
| Movement motivated | go, more, stop, up, help |
| Toy motivated | want, more, open, play, my turn |
| Music motivated | more, go, stop, again, want |
Step 3: Model during daily routines
Pick 2 to 3 routines where your child is most engaged (meals, bath time, play time) and model the starter words during those routines. Tap the button on the device while you say the word out loud.
Don't ask your child to press buttons. Don't quiz them. Just show them. Over and over.
Step 4: Respond to any communication attempt
If your child touches the device, even accidentally, treat it as communication. They tap "more" during snack? Give them more, immediately. They swipe randomly and hit "go"? Say "Go! Let's go!" and move somewhere.
This teaches them that the device has power. It makes things happen.
Step 5: Expand slowly
Once your child is using 3 to 5 words consistently, add more. Add words they seem to want but don't have. Add words that let them combine ("want" + "play," "more" + "eat"). Follow their lead.
What the Research Says
The evidence base for early AAC intervention is strong:
Romski and Sevcik (2005) studied children with developmental delays who received AAC intervention and found that it did not hinder and often facilitated speech development. Children who used AAC showed gains in both aided (device-based) and unaided (gestural, vocal) communication.
Millar, Light, and Schlosser (2006) conducted a systematic review of 23 studies and found that AAC intervention did not inhibit natural speech production in any of the cases reviewed. In fact, the majority of participants showed increases in speech production after AAC was introduced.
Cress and Marvin (2003) addressed common questions about AAC in early intervention and concluded that waiting for speech to develop before introducing AAC means missing the critical early period when children are most receptive to learning communication strategies.
The National Joint Committee (NJC, 1992) established that communication is a basic human right and that all individuals, regardless of disability severity, should have access to communication supports. This position has been endorsed by ASHA and remains the standard of practice.
Common Concerns from Parents
"If my child has a device, they'll never learn to talk."
This is the most common fear and the most thoroughly debunked. Study after study shows that AAC supports speech development. It doesn't replace it. Many children who start with AAC go on to develop spoken language, and the AAC gave them a communication foundation during the time when speech wasn't available.
"My child is too young for a tablet."
AAC use is not the same as screen time. The child isn't passively watching videos. They're actively communicating. The American Academy of Pediatrics' screen time guidelines don't apply to assistive technology use.
"They don't understand what the symbols mean."
They don't need to understand them before you start. They learn what the symbols mean through modeling, the same way babies learn what words mean by hearing them in context hundreds of times before they say them.
"Our therapist says to wait."
If your child's therapist recommends waiting to introduce AAC, ask them to explain their reasoning. If the reasoning involves prerequisite skills or readiness criteria, share the ASHA and NJC position statements that explicitly reject prerequisites. If your therapist isn't familiar with current AAC research, consider seeking a second opinion from an SLP who specializes in AAC.
Working with Your Early Intervention Team
If your child is under 3 and receiving early intervention services, AAC should be part of the conversation at every IFSP meeting. Ask:
- What communication goals are we targeting?
- How will AAC be incorporated into therapy sessions?
- What should I be doing at home between sessions?
- How will we measure progress in communication?
If your child is 3 or older and has an IEP, request that AAC be written into the plan as both a goal area and a service delivery method.
Start Today
Every day without communication tools is a day your child practices being unable to communicate. That's not a failure on their part. It's a gap in their environment that you can fill.
- Download SabiKo for free
- Set up a 2x2 or 3x3 grid with high-motivation words
- Pick one daily routine and model those words today
- Contact your SLP or early intervention team about AAC goals
Your child doesn't need to prove they're ready. They're ready now.
Download SabiKo free and give your child a way to communicate today.
References
- Romski, M., & Sevcik, R.A. (2005). Augmentative communication and early intervention: Myths and realities. Infants & Young Children, 18(3), 174-185.
- Millar, D.C., Light, J.C., & Schlosser, R.W. (2006). The impact of augmentative and alternative communication intervention on the speech production of individuals with developmental disabilities. Journal of Speech, Language, and Hearing Research, 49(2), 248-264.
- Cress, C.J., & Marvin, C.A. (2003). Common questions about AAC services in early intervention. Augmentative and Alternative Communication, 19(4), 254-272.
- National Joint Committee for the Communication Needs of Persons with Severe Disabilities. (1992). Guidelines for meeting the communication needs of persons with severe disabilities. ASHA, 34(Suppl. 7), 2-3.
- Kangas, K.A., & Lloyd, L.L. (1988). Early cognitive skills as prerequisites to augmentative and alternative communication use: What are we waiting for? Augmentative and Alternative Communication, 4(4), 211-221.
- Reichle, J. (1991). Defining and validating performance criteria associated with functional communication strategies. In J. Reichle, J. York, & J. Sigafoos (Eds.), Implementing augmentative and alternative communication (pp. 263-279). Paul H. Brookes.