AAC for Beginners: A Parent's Guide to Augmentative and Alternative Communication

If your child is not yet speaking, has limited speech, or loses speech during times of stress, someone may have mentioned AAC to you. Maybe a speech therapist suggested it. Maybe you saw another parent using a communication device at the park. Maybe you've been Googling at midnight and the acronym keeps appearing.

AAC stands for Augmentative and Alternative Communication. Augmentative means it supplements existing speech. Alternative means it replaces speech when speech isn't available. In practice, AAC is any tool, system, or strategy that helps a person communicate beyond their natural speech.

And here's the most important thing you need to know before we go any further: AAC does not prevent speech. Research consistently shows that introducing AAC supports spoken language development rather than replacing it. Multiple studies have demonstrated that children who use AAC are more likely to develop spoken language than children who receive speech therapy without AAC.

If someone tells you to "wait and see" whether your child develops speech before introducing AAC, get a second opinion. Every child deserves a way to communicate right now, not someday.

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The Different Types of AAC

AAC isn't a single device or system. It exists on a spectrum from low-tech to high-tech, and many children use multiple types depending on the situation.

No-Tech AAC

This includes any communication that doesn't require a physical tool. Gestures like pointing, waving, nodding, and shaking the head. Sign language or modified signs. Facial expressions. Leading someone to what they want. These are forms of communication your child may already be using, and recognizing them as communication is the first step.

Low-Tech AAC

Picture-based systems that don't require electricity. The most well-known is PECS (Picture Exchange Communication System), where the child hands a picture card to a communication partner to make a request. Other low-tech options include communication boards (laminated pages with pictures organized by category), visual choice boards, and first/then boards.

Low-tech AAC is inexpensive, portable, and doesn't run out of battery. It's often a great starting point for young children or children who are new to AAC. The downside is that it's limited by the number of pictures available at any given moment.

Mid-Tech AAC

Simple electronic devices that speak a recorded message when a button is pressed. These range from single-button devices (press one big button, it says "I want more") to multi-button devices with different messages on each button. These are sometimes called speech-generating devices or SGDs.

Mid-tech options include devices like the Big Mack, GoTalk, and similar products. They're relatively affordable, durable, and easy for young children to use. They're limited in vocabulary but can be effective for teaching the concept that communication produces a result.

High-Tech AAC

Tablet-based communication apps that provide access to hundreds or thousands of words through a symbol-based system. The child (or adult) selects symbols on a screen, and the device speaks the word or phrase aloud.

The most commonly used high-tech AAC apps include Proloquo2Go, TouchChat, LAMP Words for Life, and TD Snap. These are typically used on an iPad or a dedicated communication device. They range in price from free to several hundred dollars for the app, plus the cost of the device.

High-tech AAC provides the most robust communication because it allows the user to say almost anything, not just pre-selected phrases. A child using a robust AAC system can request, comment, ask questions, tell stories, express emotions, argue, joke, and participate in conversations in ways that low-tech systems can't fully support.

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How to Get Started

Talk to Your Speech-Language Pathologist

If your child is receiving speech therapy, ask their SLP about AAC. A good SLP will be open to discussing it regardless of your child's age or current speech level. If your SLP dismisses AAC or suggests waiting to see if speech develops first, consider seeking an evaluation from an SLP who specializes in AAC.

An AAC evaluation determines which type of system is the best fit for your child based on their motor skills, cognitive level, communication needs, and preferences. Many children trial different systems before settling on one.

Start Modeling Before Your Child Uses It

The single most important thing you can do to support AAC is model it. Modeling means you use the AAC system while talking to your child: you point to the symbols on the device while speaking the words naturally.

Think of it like raising a bilingual child. If you want your child to learn Spanish, you speak Spanish to them. If you want your child to learn AAC, you use AAC with them. You don't hand them a device and expect them to figure it out. You show them how it's used by using it yourself in everyday situations.

When you're at dinner, press "eat" on the device while saying "time to eat." When you're playing, press "more" while saying "more bubbles." When they're done with something, press "all done" while saying "all done." This is called aided language stimulation, and it's the most evidence-based approach to teaching AAC.

Don't expect your child to use the device perfectly or immediately. It takes months of exposure before most children begin using AAC independently. Keep modeling. Keep making it available. The input phase comes before the output phase, just like spoken language.

Make the System Available at All Times

Your child's AAC system should be available every waking hour, in every environment. At home. At school. At the grocery store. At grandma's house. In the car. Communication isn't something your child only needs during therapy sessions. They need it everywhere, all the time.

If the system is an iPad with a communication app, keep it charged and accessible. If it's a PECS binder, bring it everywhere. If it's a communication board, make copies for every location your child spends time in.

The number one reason AAC fails isn't the technology; it's access. When the device is locked in a cabinet, left at home, or only brought out during structured therapy, the child never gets enough exposure to learn the system.

Don't Limit Vocabulary

A common mistake is programming the AAC device with only requesting words: "want," "more," "cookie," "juice." While requesting is important, communication is so much more than asking for things.

Include social words (hi, bye, please, thank you), feeling words (happy, sad, mad, scared, tired), action words (go, stop, play, help, eat), descriptive words (big, little, hot, cold), and small connecting words (I, you, want, not, is).

Core vocabulary (the small set of words that make up the majority of everyday language) should be the foundation of any AAC system. Words like "I," "want," "go," "not," "more," "help," "that," and "stop" are used thousands of times a day across every context. Fringe vocabulary (specific nouns like "dinosaur" or "playground") is important but secondary.

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Common Concerns

"Won't AAC become a crutch?"

No. Research is clear on this. AAC does not prevent speech and does not become a substitute for speech when speech is possible. Children who use AAC and develop spoken language naturally transition to using speech more and the device less, on their own timeline, without being forced.

For children who do not develop reliable spoken language, AAC becomes their voice. And that voice deserves to be heard as much as any spoken one.

"My child is too young for AAC."

There is no minimum age for AAC. Babies communicate before they speak, through crying, gestures, facial expressions, and pointing. AAC simply extends that natural communication with additional tools. Children as young as 12 months have been introduced to AAC systems successfully.

"My child won't sit still long enough to use a device."

AAC doesn't require sitting at a table. A child can use a single-button device while jumping on a trampoline. They can point to a picture card taped to the refrigerator while running past it. They can press a symbol on a tablet while lying on the floor. AAC should fit into your child's natural movements and routines, not the other way around.

"We can't afford an AAC device."

If your child has an IEP, the school is legally required to provide assistive technology, including AAC devices, if the IEP team determines it's necessary. This is at no cost to you.

Many insurance plans cover AAC devices and apps with a prescription from a speech-language pathologist. Medicaid in most states covers dedicated AAC devices.

There are also free and low-cost AAC apps: Cboard (free, open-source), ASTeRICS Grid (free), and CoughDrop offer free tiers. These aren't as full-featured as Proloquo2Go or TouchChat, but they're a starting point.

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What to Expect

Learning AAC is a process, not an event. Expect a long input phase where you're modeling and your child is mostly watching. This is normal. They're learning the system the same way babies learn spoken language: by absorbing it long before they produce it.

Early AAC use might look like pressing random buttons, exploring the device, or using a single symbol for everything. That's not failure. That's the beginning of communication. Every time your child touches the device with intent, even if it's not the "right" word, they're learning that the device has power. That pressing a button makes something happen. That's the most important lesson.

Over time, with consistent modeling and access, most children begin using AAC functionally. Some children use AAC as their primary communication method. Others use it alongside developing speech. Both outcomes are successful.

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Your Child Deserves to Be Heard

Communication is a human right. Every child, regardless of whether they speak, how much they speak, or how clearly they speak, deserves a reliable way to express their thoughts, feelings, needs, and ideas.

AAC is not a last resort. It's not giving up on speech. It's giving your child a voice right now, today, while continuing to support every form of communication they develop.

Start modeling. Make it available. And trust the process.

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Download our free AAC Basics for Parents guide for a printable overview of AAC types and getting started tips. For a full therapy comparison including speech therapy approaches, read ABA, OT, Speech, and More: Autism Therapies Explained.