Article

AAC for Autism: A Parent's Plain-English Starter Guide (PECS vs Proloquo vs LAMP)

Last September, Danielle in Raleigh sat across from her son's SLP and cried. Not sad tears. Relief tears. Her son Mateo, 3 years and 4 months old, had been us

Last September, Danielle in Raleigh sat across from her son's SLP and cried. Not sad tears. Relief tears. Her son Mateo, 3 years and 4 months old, had been using Proloquo2Go for six weeks. He'd had maybe eight spoken words before that, all approximations, and daily meltdowns that left both of them exhausted. That morning in the waiting room, unprompted, he pressed "go" then "car" then "please" on the iPad and looked at her. "He'd never made a three-word request before," Danielle told me. "Not with his voice, not with anything. And then two days later, he started saying 'go' out loud. With his actual mouth." Her SLP wasn't surprised. This is what the research predicts.

Here's the thing about AAC (Augmentative and Alternative Communication) for autistic kids: the question is not whether to use it. The evidence is settled. The real questions are which system, how soon, and how to pay for it. This guide covers all three.

If your autistic kid is over 2 with limited spoken language, you should be exploring AAC right now, alongside whatever speech work you're doing. The fear that AAC will "make them stop trying to talk" is the most persistent and most thoroughly debunked myth in pediatric speech.

AAC Does Not Prevent Speech. Full Stop.

The 2018 Schlosser and Wendt systematic review combined 23 studies of AAC use in children with developmental disabilities. AAC users showed equal or greater spoken language gains compared to speech-only intervention. A 2019 Millar et al. follow-up meta-analysis confirmed the finding with additional studies. Earlier work by Romski and Sevcik, Diane Paul, and others reaches the same conclusion.

The mechanism is almost boringly intuitive once you hear it: AAC gives a kid a successful communication experience right now. That success lowers anxiety, builds the intent-expression-response loop, increases social engagement, and often produces spoken approximations alongside device use. Kids commonly start saying words for the same items they've been pressing on their device, often within months of starting.

If someone tells you AAC will prevent speech, they are wrong. The evidence is clear. You can politely move on.

What Counts as AAC (It's Broader Than You Think)

People hear "AAC" and picture a kid with a big tablet strapped to a wheelchair. That's one version. The full spectrum is wider:

No-tech / unaided: Sign language, gestures, body positioning. No device required. Your kid pointing at the fridge is technically unaided AAC.

Low-tech: Picture cards, communication boards, PECS books, choice boards. Anything printed and physical.

High-tech: Dedicated speech-generating devices and apps on iPads (Proloquo2Go, LAMP Words for Life, TouchChat, and others). The device speaks for the kid when they tap a button.

Most autistic kids who use AAC end up mixing all three. Signs and gestures for quick, in-the-moment stuff. A high-tech device for more complex messages. Low-tech backups for when the iPad's dead or left at home. Think of it less like choosing a single tool and more like building a communication toolkit.

When to Start (Sooner Than You Think)

Start exploring AAC as soon as any of these apply:

You don't need a formal diagnosis to start low-tech AAC. Picture cards on the fridge, a print-out PECS book, a free CoughDrop account, the iOS built-in accessibility AAC: any of these can happen this week with no professional involvement whatsoever.

The bigger apps (Proloquo2Go, LAMP) work best when set up with SLP guidance, which usually means waiting for the eval. But waiting for the eval doesn't mean waiting to communicate.

Low-Tech: PECS and the Power of Handing Someone a Card

PECS (Picture Exchange Communication System) is the OG structured low-tech AAC. Developed for autistic kids in the 1980s, now used internationally. The concept: a kid physically hands a picture card to a communication partner to request something. That handoff IS the communication act.

PECS moves through 6 phases:

  1. Single picture exchange for a highly motivating item
  2. Persistence and distance (kid travels to get the picture, then finds the partner)
  3. Picture discrimination (choosing between multiple pictures)
  4. Sentence structure ("I want" + picture)
  5. Responding to "what do you want?"
  6. Commenting

Phases 1 through 3 are the most useful for parents starting at home. Phase 4 onward benefits from formal training.

Why it works: Concrete, unambiguous, builds the request-response loop, zero electronics required. You hand a card, you get a thing. Cause and effect, crystal clear.

Where it falls apart: Limited vocabulary (you can only carry so many cards). Gets slow once a kid wants to communicate anything complex. Requires the communication partner to be physically present and paying attention. Less portable than a device app.

Starting PECS at home for free: Print cards from one of the many free PECS card sites. Laminate them. Stick velcro on the back. Start with 5 to 10 cards of high-motivation items (favorite snacks, favorite toys). Practice the basic exchange a few times a day during snack and play. A formal PECS training program through Pyramid Educational Consultants exists for those who want to go deeper. Not required for getting started.

High-Tech: The Three Apps You'll Hear About

Proloquo2Go

The default recommendation for most families on iPad. Symbol-based communication with extensive customization and deep vocabulary out of the box.

For most families, the AAC search ends here unless an SLP specifically steers elsewhere.

LAMP Words for Life

Built around Language Acquisition through Motor Planning. The core design principle: every word lives in the same location every single time, building motor memory. Think of it like learning to type. You don't look for the "e" key after a while; your finger just goes there.

If a LAMP-trained SLP recommends it, follow that recommendation. If nobody's recommending it specifically, Proloquo2Go is the safer first pick.

TouchChat with WordPower

Another full-featured AAC app, popular in clinical settings, particularly with the WordPower vocabulary system.

The choice between Proloquo2Go and TouchChat often comes down to what your SLP knows best. And honestly? That's a fine way to decide.

Others Worth a Look

Side-by-Side: PECS vs Proloquo2Go vs LAMP

| Factor | PECS | Proloquo2Go | LAMP | |--------|------|-------------|------| | Cost | $0-50 | $250 | $300 | | Setup difficulty | Low | Medium | High | | SLP involvement needed | Optional | Recommended | Strongly recommended | | Portability | Medium | High | High | | Vocabulary growth | Limited | Extensive | Extensive | | Motor planning consistency | N/A | Customizable | Built-in priority | | Insurance coverage | No | Often yes | Often yes | | Time to start | Today | After SLP setup | After LAMP-trained SLP setup |

My honest recommendation for most families: Start PECS at home this week. Move to Proloquo2Go once the SLP eval happens and a device is approved. Consider LAMP only if a LAMP-trained SLP specifically recommends it for your kid.

Getting Insurance to Pay

A dedicated AAC device or app is medically necessary equipment under most US insurance plans when prescribed by a doctor or SLP. The route:

  1. SLP evaluates and recommends a specific AAC device or app
  2. SLP writes a justification report
  3. Doctor signs off (usually pediatrician or developmental pediatrician)
  4. Insurance approval requested through an SGD (Speech Generating Device) supplier
  5. Device or app code is approved and provided

Expect this to take 3 to 6 months. Insurance approves in most cases when the documentation is solid.

If insurance denies:

Free or low-cost options while you wait:

Where LittleWords Fits (and Doesn't)

I want to be direct about this because the AAC community has earned its skepticism toward new apps elbowing into their space.

LittleWords.ai is a play-based speech companion app. The AI character (Buddy) leads sound games, social scripts, and regulation support. It is not an AAC device. It is not designed as a primary communication system. It is not a substitute for Proloquo2Go or LAMP.

If your kid needs AAC, they need AAC. Use the tools in this guide. LittleWords occupies a different category entirely: a practice and engagement tool for kids working on speech development. The two can coexist (a kid can use Proloquo2Go for daily communication and LittleWords for play-based practice), but one does not replace the other.

How to Introduce AAC at Home Without Overthinking It

Once you have a device or are starting low-tech:

  1. Model, model, model. Use the device alongside your spoken words. Press the buttons for "want," "more," "eat" while you say them out loud. Your kid watches you use the system. This is called "aided language stimulation" and it's the single highest-value technique you can do.
  2. Don't quiz. Don't point at the device and say "where's eat?" Just use it yourself. Naturally.
  3. Keep it available all the time. AAC should be on the table at every meal, in the car, in the living room. Not locked away "for therapy time."
  4. Accept every communication attempt. A press, a gesture, a grunt. All count.
  5. Honor what they say with it. If they press "outside," you go outside. Communication has to produce real outcomes or the kid stops trusting the system. (This one is hard at 7:30 AM in January. Do it anyway when you can.)
  6. Don't pressure. Same rule as spoken language. No "show me how you say it on your talker." Model and wait.

The first few weeks will feel like nothing is happening. Like you're pressing buttons into a void. Then your kid presses one intentionally, looks at you, and something clicks into place. From there, usage usually expands fast.

When to talk to a professional: AAC setup beyond basic low-tech tools is best done with an SLP trained in AAC. Ask explicitly: "What's your AAC training?" Good answers include AAC certificate programs, training in specific apps (Proloquo2Go certification, LAMP training), and continuing education in language-driven AAC approaches. If an SLP describes AAC as a "last resort," find a different SLP.

For more on working with your SLP at home, see our speech therapy at home guide for autistic kids.

FAQ

Q: My kid is 2 and has 20 words. Is it too early for AAC? Not necessarily too early, but probably not urgent either. If progress is steady, continued speech work is reasonable. If progress stalls or your kid shows real frustration at not being understood, adding AAC alongside speech work is appropriate.

Q: My pediatrician said AAC will make my kid lazy. What now? Share the research (Schlosser and Wendt 2018 is the go-to citation) or find a different pediatrician. This belief is outdated and well-documented as incorrect.

Q: Do I need to learn the whole system before introducing it? No. Start with 10 to 20 core words and grow from there. The basic vocabulary categories (people, actions, descriptors, social phrases) are intuitive. Waiting to be an expert is just another form of waiting.

Q: My kid keeps pressing the same button over and over. Normal early use. They're testing the system, learning that their action produces a consistent result. Respond to each press as if they meant it. Communicative use expands within weeks for most kids.

Q: What if my kid never uses speech and only uses AAC? That's a legitimate outcome and not a failure. AAC is a complete communication system. Many AAC users communicate complex thoughts, hold jobs, maintain relationships, and live full lives using AAC as their primary mode. Speech is one possible outcome of language development. It is not the only valid one.

Q: Can AAC be used alongside sign language? Absolutely. Many families combine signs for quick, frequent communication (like "more" and "all done" at meals) with a high-tech device for more complex messages. They complement each other.

---

Related reading:

---

AAC isn't a last resort. It's a tool, and the boring truth is that the kids who get it early and use it consistently do better, both in spoken language and overall communication, than the kids who wait. Don't wait.

Related Little Words guides

Important: Little Words is educational support for home practice. It is not a medical device, not an AAC replacement, and not a substitute for a licensed speech-language pathologist, pediatrician, or developmental evaluation.