10-Minute Speech Practice That Doesn't Require Sitting Still

Last updated 2026-07-09

What are AAC device icons and why do they exist?

AAC stands for augmentative and alternative communication. An AAC device, whether a dedicated hardware unit or a tablet app, gives people who can't rely on speech alone a way to express themselves by selecting symbols. Those symbols are the icons.

The core idea is simple: if a child can't say "I want juice," they can tap a picture of juice and the device speaks it aloud. The reality underneath is messier. Icons are more than pictures. They are a visual language system, and every design decision (how abstract the drawing is, whether a verb gets its own shape, how categories are organized) shapes what a user can eventually say and how fast they get there.

The American Speech-Language-Hearing Association (ASHA) defines AAC as including all forms of communication other than oral speech that are used to express thoughts, needs, wants, and ideas ^[1]. Icons are the vocabulary layer that makes that possible on a device.

Here is the part parents new to this world need to hear. No icon set is neutral. The symbol system a child learns on becomes their first visual language. Switching systems later, the way you'd switch a child from one reading curriculum to another, is genuinely hard and can set communication back. That's why choosing thoughtfully upfront matters so much.

How many AAC symbol systems are there, and how are they different?

There are roughly a dozen major symbol systems in widespread use, though a handful dominate the market. The ones you'll actually meet are PCS (Picture Communication Symbols), SymbolStix, Widgit Symbols, LAMP Words for Life icons, Minspeak (also called Semantic Compaction), and plain photographs.

Here is a quick comparison of the major systems:

PCS is the most widely used in North American schools, largely because Boardmaker has been the dominant authoring software in special education for decades ^[2]. That does not make it the best choice for every child. Minspeak-based systems like LAMP Words for Life are built on motor learning theory: the icon's picture matters less than the physical location you press. A child learns a motor sequence the way a pianist learns a chord, not by reading the symbol every time. Research on LAMP shows meaningful language gains in minimally verbal children, though the evidence base is still growing compared to older symbol systems ^[3].

Photographs feel the most intuitive to families, and they're the most concrete. The problem is that a photo of your specific red cup does not generalize to any other cup. Most SLPs use photographs only as a starting point or for very young learners, then move to a more abstract but generalizable set.

What makes a good AAC icon, visually speaking?

Good icon design for AAC is its own subfield, and the research on it is more specific than most parents realize.

The most consistent finding: iconicity, meaning how obviously a picture maps to its referent, predicts how quickly a new learner picks up that symbol ^[4]. A picture of an apple is highly iconic. A picture representing "before" or "because" is not. That creates a real problem. The words children need most for conversation are often the least iconic. Pronouns, prepositions, conjunctions, and verb tenses are hard to draw.

Several design factors research and clinical practice point to:

Color. Most systems color-code by word type (verbs in one color, nouns in another). Tobii Dynavox's default uses yellow for people, green for verbs, blue for descriptives, orange for nouns. This traces back to the Fitzgerald Key, a system developed in the 1920s for deaf students that got adopted into AAC. The colors help with grammar but can confuse very young users who expect a dog to be brown, not orange.

Figure-ground contrast. Simple, high-contrast icons with minimal background detail are processed faster, particularly by users with visual processing differences. Cluttered symbols slow selection.

Consistency. Using the same symbol for the same concept everywhere in the system reduces cognitive load. When the icon for "more" looks different on page 1 versus page 5, the user has to relearn it.

Motor access. For users with physical disabilities who use scanning or eye gaze, icon size and spacing matter as much as the symbol itself. A beautiful symbol that's too small to hit reliably is useless.

Cultural representation. Many standard symbol sets were designed with white, Western norms as the default. A child from a different background may not recognize certain foods, family structures, or activities in the default icons. Most modern software lets you swap in custom photos or drawings for exactly this reason.

How are AAC icons organized on a device?

Icon organization is called the display layout or vocabulary organization, and it's one of the most important and most frequently misconfigured parts of AAC setup.

There are three main organizational approaches:

Grid-based displays arrange icons in a uniform grid, often by category pages (food, feelings, actions). This is the most common setup and what most people picture when they think of a communication board. Grid size ranges from 4 large icons for early learners to 84 or more small icons for advanced users on a full vocabulary system.

Core vocabulary displays put the most frequently used words (I, want, more, help, stop, go, like, different) front and center on a home page, with fringe vocabulary (specific nouns, names) accessed through category pages. Core words make up roughly 80 percent of what we say in daily conversation despite being a small slice of the total vocabulary ^[5]. Putting them on the home screen is standard clinical practice.

Motor-pattern based displays (like Minspeak) place icons by motor sequence rather than category. The location teaches the sequence, not the category. This asks more upfront learning from the user but produces faster, more fluent output once learned.

The worst thing you can do with a layout is redesign it constantly. Every time icons move, the user has to relearn motor memory. Pick a layout, get professional input on whether it fits the child's access method and cognitive level, and commit.

For kids working with a speech-language pathologist, the layout and vocabulary decisions should come from that clinician. If you're exploring options on your own, ASHA's Practice Portal on AAC has a useful overview of vocabulary selection principles ^[1].

What is the difference between core and fringe vocabulary icons?

This distinction is probably the single most useful thing a parent can learn about AAC icon organization.

Core vocabulary is the small set of words that show up constantly across every communication context. Words like "want," "more," "stop," "go," "help," "like," "different," "I," "you." Research shows that roughly 200 to 400 core words account for 80 percent or more of what people say across all ages and contexts ^[5]. These words are almost impossible to draw iconically, which is why they're often the weakest part of a system's visual design. They should also be the easiest to reach, always one tap from the home screen.

Fringe vocabulary is everything else. The name of a child's favorite show. "Dinosaur." "Grandma." "Spaghetti." These words are easy to picture and highly personal, but they get used rarely compared to core words. They live deeper in the system, behind category pages.

Here is the mistake many families and even some schools make. They fill the home screen with fringe vocabulary because it's easier to teach. "Look, you can tap pizza!" Sure. But the child who can only request specific nouns cannot say no, express a feeling, negotiate, or tell a story. A device loaded with fringe is a request machine, not a communication system.

Want one quick audit of any AAC system a child is using? Look at the home screen. Count how many core words sit front and center versus how many nouns. That ratio tells you a lot.

Do the icons on an AAC device actually help kids learn to talk?

This is the question parents ask most quietly, because it touches on a fear: will the device replace speech, or support it?

The evidence is clear. AAC does not suppress speech development, and in many children it actively supports it. A widely cited 2006 systematic review by Millar, Light, and Schlosser found no evidence that AAC inhibits speech and moderate evidence that it facilitates speech production in children ^[6]. The American Academy of Pediatrics takes the same position, and ASHA's clinical guidance says AAC should be offered without waiting to see whether natural speech develops ^[1].

Icons support language learning in a few concrete ways. They give the child a stable visual referent for a word, which helps word learning in a way that fleeting spoken words don't. They support aided language stimulation (ALS), a technique where a communication partner points to icons while speaking naturally, modeling how the system is used. Studies on ALS show that consistent modeling by caregivers correlates with faster AAC acquisition ^[7].

Still, icons are a scaffold, not a ceiling. The goal is always to support communication in whatever form works best for the individual child. Some children use AAC alongside growing speech. Some children find AAC their main channel. Some move off AAC entirely as speech develops. All of those outcomes are fine.

Which AAC devices use which icon systems?

The major hardware and software platforms each ship with a default icon system, though most allow customization:

Proloquo2Go is among the most widely used AAC apps globally, with over 100,000 users as of recent reporting, though AssistiveWare does not publish current user counts publicly ^[8]. TouchChat and Snap Core First are common in schools because they work with existing PCS libraries that special education staff already know.

One thing worth knowing: dedicated hardware devices (like the Tobii Dynavox I-Series or the PRC Accent) usually run the same software as their iPad counterparts, but in a more durable, water-resistant body with better speakers. Insurance funding, including Medicaid, generally covers dedicated devices under the durable medical equipment category but does not cover apps on a personal iPad ^[9]. That distinction matters enormously for families sorting out funding.

For more background on device types and funding options, the article on aac devices covers the hardware side in detail.

How do you choose the right icon system for your child?

The honest answer: with a speech-language pathologist who specializes in AAC. That's not a hedge. Symbol system selection means assessing cognitive level, visual processing, motor access needs, literacy skills, and how consistently the family can model the system. A general pediatric SLP may not have this training, and it's fine to ask about that directly.

Here is a practical framework for thinking through the decision:

Step 1: Consider motor access first. How will the child physically operate the device? Direct touch, eye gaze, switch scanning? This eliminates some options right away. A child using eye gaze needs a very different icon size and layout than a child using direct touch with one hand.

Step 2: Assess symbolic understanding. Can the child match a photo to an object? Can they match a line drawing to a photo? These are testable skills. A child who only recognizes photographs is not ready for abstract Minspeak icons. A child who can read some words may benefit from text labels under icons.

Step 3: Look at what the school is using. Consistency across home and school dramatically improves generalization. If the school uses Boardmaker with PCS, there's a real benefit to using the same system at home, even if a different system might work better in theory.

Step 4: Consider family support capacity. The best symbol system is the one the family will actually model consistently. Minspeak needs significant partner training. PCS-based grid systems feel more intuitive to most families right away. Honest self-assessment here matters more than people admit.

Early intervention services under IDEA Part C (for children under 3) can include AAC evaluation at no cost to families ^[10]. If your child is under 3, that's the right starting point. If they're school-age, the IEP team has to consider AAC as an assistive technology need under IDEA ^[10]. You do not have to wait for a private evaluation to ask for this.

If you want a starting point before an evaluation, tools like Little Words offer a quiz-based way to match a child's communication profile to appropriate vocabulary and symbol formats, which is handy for getting oriented before a clinical appointment.

Can you customize AAC icons, and should you?

Yes, and in many cases you should. Every major AAC platform allows some level of icon customization, from swapping in a personal photo to building entirely new symbol pages.

Customization makes the most sense in a few situations. Cultural relevance is one: if the default icons don't reflect the child's actual life, real photos of their home, family, foods, and routines make the device more meaningful and easier to learn. Fringe vocabulary is another: specific names, places, and personal interests should almost always be photos of the actual thing. And abstract concepts that the default symbol handles poorly for a specific child.

What you should not customize: core vocabulary icons. Changing what the "want" symbol looks like, or moving it, means the child has to relearn something they've already internalized. Treat core vocabulary placement and appearance as close to permanent once established.

One practical caution. Parents who get deep into customizing often build systems too personalized for anyone else to run. If a teacher, grandparent, or therapist opens the device and can't figure out the layout, the child loses communication partners. Keep customizations logical, and write them down somewhere.

What does the research say about icon learning rates and vocabulary size?

The research on AAC icon acquisition is genuinely interesting and gives some useful benchmarks, though the field is younger than you might expect.

A study by Binger and Light found that children with developmental disabilities learned new AAC symbols faster when they were explicitly taught using aided language stimulation than when they were simply handed the device ^[7]. The lesson for families: having the device is necessary but not sufficient. Modeling matters.

On vocabulary size, research consistently shows that large AAC systems, those with 200 or more vocabulary items, produce better communication outcomes than restricted systems, even for early AAC learners ^[5]. The instinct to start small and build up is understandable, but it often backfires. Children learn from seeing the full range of what's possible.

On icon learning rates specifically, a 2022 study in the Journal of Speech, Language, and Hearing Research found that children with autism spectrum disorder learned symbol meanings at rates that varied widely by symbol iconicity, with highly iconic symbols acquired 2 to 3 times faster than low-iconicity symbols under the same teaching conditions ^[4]. That's why core vocabulary teaching needs more explicit instruction than fringe: "want" is harder to learn from a picture than "apple."

Children using autism spectrum speech therapy approaches that integrate AAC, including symbol-based systems, show a range of outcomes. The best predictor across studies is not the device itself but the consistency of modeling in natural contexts.

For context on broader early support, the article on early intervention covers what to expect from services and timelines.

What common mistakes do families make with AAC icons?

Once you know what the research says, the practical mistakes get easier to spot.

Waiting until a child is "ready." ASHA's clinical guidance and the AAP both state there is no prerequisite cognitive or language level required before offering AAC ^[1]. The readiness myth delays access to communication for children who need it now.

Loading the device with only nouns. As covered above, a device full of fringe vocabulary produces a request machine, not a communicator. If the home screen is all food and toys, push back.

Not modeling. Research is unambiguous that caregiver modeling of AAC, pointing to symbols while speaking, is the mechanism by which children learn the system ^[7]. A device handed to a child with no adult modeling rarely gets used well.

Redesigning the layout repeatedly. Every reorganization erases motor memory. Make layout decisions carefully, ideally with an SLP, and treat them as durable.

Assuming the school's choice is optimal. Schools often pick symbol systems based on what staff already know, software licensing, or what the device rep offered. That may or may not fit your child. You can ask for an independent AAC evaluation as part of the IEP process.

Treating the device as a last resort. Families sometimes wait until every other option is exhausted before pursuing AAC. The evidence says earlier is better, and that AAC supports rather than competes with natural speech development ^[6].

If you're also looking at how speech sound disorders overlap with AAC needs, the articles on apraxia of speech and childhood apraxia of speech cover those intersections in detail.

How does working with a speech therapist change how icons are used?

A speech-language pathologist does more than recommend a device. They assess the whole communication profile, set vocabulary goals, train family members on modeling, and adjust the system as the child grows. That ongoing calibration is where most of the value sits.

Concretely, an SLP shapes icon use in a few ways. They run a feature-matching evaluation, systematically comparing device options to the child's needs across motor access, cognition, language level, and environment. They select vocabulary targets, deciding which words to teach first based on functional communication goals. They train aided language stimulation to caregivers, which the evidence calls one of the highest-value interventions available ^[7]. And they track outcomes: is the child expanding vocabulary, combining symbols into phrases, and generalizing communication to new contexts?

For families without easy access to an AAC specialist, online speech therapy has expanded a lot, and many platforms now include SLPs with AAC specialization who can do remote feature matching and caregiver coaching. Telehealth AAC services are covered by many Medicaid programs and some private insurers, though coverage varies by state ^[9].

For more on finding and working with an SLP, the article on speech therapy and speech therapists covers what to look for and what to ask.

Where can families get reliable help choosing and setting up AAC icons?

Start with ASHA's Practice Portal on AAC, which has clinician-facing guidance that's also readable by informed parents ^[1]. The Assistive Technology Act Programs (AT Act Programs) directory connects families to state-level assistive technology programs that run device loan banks, where you can try devices before committing ^[11].

United Cerebral Palsy, the Autism Society of America, and the AAC Institute all keep resource libraries with guidance on symbol systems. The AAC Learning Center run by Tobii Dynavox is vendor-operated but has genuinely useful public tutorials on PCS and symbol organization.

For insurance and funding help, your state's Medicaid office and the AT Act Program are the starting points. ASHA's page on AAC funding outlines what Medicare and Medicaid cover for speech-generating devices under the durable medical equipment benefit ^[9].

If you're just starting out and want a structured way to understand your child's communication profile before seeing a specialist, Little Words has a short intake quiz that maps a child's current communication to relevant vocabulary and symbol formats. It's not a substitute for clinical evaluation, but it can hand you a useful vocabulary before your first SLP appointment.

For the earliest ages, an earlier intervention approach, specifically IDEA Part C services before age 3, is the fastest path to a funded AAC evaluation.

Frequently asked questions

What age can a child start using AAC icons?

There is no minimum age. ASHA's clinical guidance explicitly states there is no prerequisite developmental level before offering AAC, including symbol-based systems. In practice, AAC evaluation can begin in infancy for children with known motor or communication disorders. For late talkers identified around age 18 to 24 months, IDEA Part C entitles families to a free evaluation, which can include AAC, before the child turns 3.

Will using AAC icons stop my child from learning to talk?

No. A 2006 systematic review by Millar, Light, and Schlosser found no evidence that AAC inhibits speech and moderate evidence that it supports it. ASHA and the AAP both support offering AAC without waiting for speech to develop. Children who use AAC and go on to develop speech use it as a bridge, not a replacement. Withholding AAC to encourage speech is not supported by evidence.

What is the most common AAC icon system used in schools?

Picture Communication Symbols (PCS), used in Boardmaker software by Tobii Dynavox, is the most widely used symbol system in North American schools. This is partly because Boardmaker has been the dominant authoring tool in special education for decades, giving it a large installed base. SymbolStix is the second most common, and is the default in Proloquo2Go and several other widely used apps.

How many icons should an AAC device have?

Research supports large vocabulary systems, typically 200 or more words, even for early AAC learners. Starting with a highly restricted vocabulary (under 50 words) is not recommended by current evidence because it limits what children can observe and learn. A home screen might display 12 to 32 icons, but the full system should be much larger, organized across category pages the child can navigate.

What is the difference between Minspeak icons and PCS icons?

PCS icons are pictographic: each picture maps to one concept, and you read the picture to know the word. Minspeak icons are multi-meaning: the same icon means different things depending on what other icons are pressed in sequence. Minspeak is based on motor learning theory, meaning the child learns a physical sequence, not a visual meaning. Both approaches work, but they require very different teaching strategies and different levels of partner training.

Can I make my own AAC icons instead of buying a system?

Yes. Low-tech communication boards with hand-drawn or printed photos are a legitimate and often effective starting point, especially for very young children or as a supplement to a high-tech device. The limitation is scalability: hand-made systems are hard to keep consistent, harder to expand, and may not generalize if the child later moves to a standard symbol set. For long-term communication, a system built on a major symbol library is usually more durable.

Do AAC icons work for kids with autism who also have echolalia?

Echolalia and AAC use can coexist, and AAC does not worsen echolalia. Children with autism who use echolalia as communication are already showing intent to communicate, which is a good prognostic sign. AAC icons can give them a more flexible channel alongside scripted speech. The interaction between echolalia and AAC vocabulary use is an active area of clinical practice. For more on echolalia, see the article on echolalia.

How are AAC icons funded for children who need them?

Dedicated speech-generating devices are covered under Medicaid as durable medical equipment in most states, following a prescription from a physician and an SLP evaluation. Private insurance coverage varies but is increasingly required under state parity laws. Apps on a personal iPad are generally not covered, but some states have Medicaid waiver programs that cover AAC apps. ASHA maintains a funding guidance page with state-by-state information.

What does aided language stimulation mean, and how does it relate to icons?

Aided language stimulation (ALS) is a teaching strategy where a communication partner points to icons on the AAC system while speaking naturally. If you say 'do you want more?' you simultaneously tap the 'want' and 'more' icons. Research shows ALS is one of the most effective ways to teach symbol meaning and encourage spontaneous AAC use. It requires the adult to have a functioning AAC system available and to use it consistently across daily routines.

What should the home screen of an AAC device include?

The home screen should prioritize core vocabulary: high-frequency, multi-purpose words like want, more, stop, go, help, like, no, yes, I, you, it. Research shows roughly 200 to 400 core words account for 80 percent of everyday communication. Specific nouns and names (fringe vocabulary) should be organized on category pages accessible from the home screen. A home screen full of specific nouns limits what the child can express.

Is there research showing which icon system leads to better outcomes?

Honest answer: direct head-to-head comparisons of symbol systems are rare. Most research shows that iconicity (how obviously a picture maps to its meaning) predicts learning speed, and that modeling by caregivers predicts outcomes more than the specific symbol set chosen. A 2022 study in the Journal of Speech, Language, and Hearing Research found high-iconicity symbols were acquired 2 to 3 times faster than low-iconicity symbols under the same teaching conditions. Consistency and adult modeling matter more than brand.

What is the Fitzgerald Key and is it still used in AAC icons?

The Fitzgerald Key is a color-coding system developed in the 1920s for deaf education that assigns colors to grammatical categories. Yellow for people, green for verbs, blue for descriptives, orange for nouns. It was adopted widely in AAC and remains the default color scheme in many PCS-based systems. Whether it actually helps is debated: some users benefit from the grammatical cues, while very young users may find the unnatural colors confusing. Most platforms let you turn it off.

How do I know if my child's AAC icon system needs to be changed?

Signs that a system may need adjustment: the child has outgrown the vocabulary and can't express increasingly complex ideas, the motor access method has changed and icons are too small or too large, the child has gained literacy skills and could benefit from text-based or hybrid displays, or the system is consistently ignored despite good modeling. An SLP who specializes in AAC can do a re-evaluation and feature match to current needs. This is not uncommon as children develop.

Can AAC icons be used alongside speech therapy for apraxia?

Yes, and often they are. Children with childhood apraxia of speech (CAS) may understand a great deal but have difficulty producing speech reliably. AAC provides a dependable communication channel while motor speech therapy targets speech production. The two approaches support each other. An AAC system with consistent motor patterns, like LAMP, may have particular advantages for children with CAS because the physical sequence is what is being taught. See the article on childhood apraxia of speech for more detail.

Sources

1. American Speech-Language-Hearing Association, AAC Practice Portal: ASHA defines AAC as all forms of communication other than oral speech and states there is no prerequisite level before offering AAC
2. Tobii Dynavox, Boardmaker product information: PCS symbols via Boardmaker are the most widely used in North American special education settings
3. Journal of Speech, Language, and Hearing Research, 2022, symbol iconicity and AAC acquisition rates in autism: High-iconicity symbols were acquired 2 to 3 times faster than low-iconicity symbols under the same teaching conditions in children with ASD
4. Light, J. & Binger, C. (1998). Building Communicative Competence with Individuals Who Use AAC. Brookes Publishing; core vocabulary research: Approximately 200 to 400 core words account for 80 percent or more of everyday communication across ages and contexts
5. 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.: Systematic review found no evidence that AAC inhibits speech and moderate evidence that it facilitates speech production
6. Binger, C. & Light, J. (2007). The effect of aided AAC modeling on the expression of multi-symbol messages by preschoolers who use AAC. AAC: Augmentative and Alternative Communication.: Aided language stimulation and caregiver modeling correlate with faster AAC acquisition and more multi-symbol utterances
7. AssistiveWare, Proloquo2Go product information: Proloquo2Go is among the most widely used AAC apps globally, referenced as having over 100,000 users
8. American Speech-Language-Hearing Association, AAC funding page: Medicaid covers dedicated speech-generating devices as durable medical equipment; apps on personal iPads are generally not covered
9. U.S. Department of Education, Individuals with Disabilities Education Act (IDEA), Part C and Part B provisions: IDEA Part C covers AAC evaluation for children under 3 at no cost; IEP teams are required to consider AAC as assistive technology under Part B
10. Assistive Technology Act Programs (AT Act), state program directory: AT Act Programs in each state offer AAC device loan banks allowing families to try devices before purchase
11. American Academy of Pediatrics, policy on AAC and communication supports: AAP position supports offering AAC without waiting for natural speech to develop