Dynamic AAC Devices for Children with Late Intervention - After the Critical Language Period)

Cochlear Implants, BAHA/Bone Conduction Devices, and Traditional Hearing Aids – with ELL/Bilingual Considerations

The critical language period (roughly birth to age 3–3.5 years) is when the brain is most plastic for developing auditory-based spoken language. Intervention after this window increases the risk of gaps in vocabulary, grammar, and functional communication — but the degree of risk and the potential benefit of dynamic AAC varies significantly by device type.

Side-by-Side Analysis: CI vs. BAHA vs. Hearing Aids (Late Intervention)

Aspect	Cochlear Implants (CI)	BAHA / Bone Conduction Devices	Traditional Hearing Aids (HA)
Type of hearing loss	Severe-to-profound sensorineural (cochlea/nerve damaged)	Conductive, mixed, or single-sided deafness (cochlea intact)	Mild-to-severe sensorineural or conductive
How sound is delivered	Electrical stimulation directly to auditory nerve	Vibration through bone to intact cochlea (more “natural” sound)	Acoustic amplification through ear canal
Impact of late surgery/fitting	Highest risk of language delays (missed peak plasticity window)	Lower risk — cochlea is healthy; early non-surgical options (Softband) can minimize gaps	Moderate risk; delays possible but often milder than late CI
Typical language outcomes	Slower vocabulary/grammar growth if implanted >3 yrs; more variable results	Stronger spoken-language potential with consistent use; often closer to typical peers	Good progress possible; bilingual users may wear devices fewer hours
Need for dynamic AAC	Most common / strongest recommendation as supplement	Situational only (not routine)	Situational only (least common)
When AAC is most helpful	Persistent vocabulary/grammar gaps, frustration, additional disabilities, or ELL	Additional disabilities, very slow progress, or low device wear time in bilingual families	Additional disabilities, inconsistent device use, or ELL-related delays
ELL/Bilingual considerations	High benefit from bilingual AAC features (code-switching)	Moderate benefit; bilingual families sometimes show lower daily wear time	Highest risk of lower daily wear time in bilingual families (2024 study)

Key research insights (specific to late intervention + ELL):

• Late CI children show the largest gaps and benefit most from multimodal supports like AAC.
• BAHA in children with conductive loss generally supports better speech/language development than conventional aids, with less severe impact from delayed intervention.
• Bilingual children with traditional hearing aids wear devices significantly fewer hours per day than monolingual peers (especially older children); this difference is not seen with CI or bone-conduction devices.
• AAC (including dynamic apps) does not hinder spoken language in any device group — it often increases speech attempts and functional communication.

Is Dynamic AAC Recommend? If Yes, How and What Type?

General rule: Dynamic AAC (high-tech speech-generating apps on a tablet) is a supplement — never a replacement for auditory training, spoken-language modeling, or device optimization. It provides visual symbols + clear voice output that pairs with whatever hearing technology the child uses.

1. Cochlear Implants (CI) – Late Implantation

Yes — It is recommended that dynamic AAC be used here most strongly. Late implantation often results in larger gaps due to auditory deprivation during the critical period. Dynamic AAC bridges those gaps by giving consistent visual + auditory models while the child continues listening/spoken practice. Recommended apps (in order of preference for your ELL families):

• Proloquo2Go (top choice) — strongest grammar tools + true bilingual code-switching (English/Spanish mid-sentence).
• TouchChat (with WordPower) — excellent sentence flow and Android option.
• LAMP Words for Life — great for motor planning and automaticity.

Used in short, functional sessions (play, routines, story retell) with immediate spoken modeling.

2. BAHA / Bone Conduction Devices

Only on a case-by-case basis — not routinely. Because the cochlea is intact, sound quality is more natural and language delays are usually milder. AAC is helpful only if:

• The child has additional disabilities or very slow spoken-language progress despite good BAHA fitting.
• Bilingual families show lower daily device wear time (as noted in recent data).
• Frustration or communication breakdowns persist in noisy classrooms.

Same three apps as above; emphasize fading visual support quickly as auditory access is typically stronger.

3. Traditional Hearing Aids

Only on a case-by-case basis — least often needed. Acoustic amplification is usually sufficient for many children when consistently fitted. AAC is considered when:

• Spoken-language progress is slower than expected.
• Bilingual children show reduced daily wear time (a documented pattern).
• There are co-occurring challenges (e.g., motor speech issues, ELL academic vocabulary gaps).

Again, the same dynamic apps work well, with extra attention to ensuring consistent HA use alongside AAC.

Special Considerations for Bilingual/ELL Families

• Device wear time: Bilingual children with hearing aids are at higher risk of wearing devices fewer hours daily. BAHA and CI users do not show this difference. AAC can help by making communication more motivating and reducing reliance on perfect device conditions.
• Bilingual support: Proloquo2Go stands out for seamless English - Spanish code-switching and dual-language pages — critical for honoring home language while building school English.
• Cultural & family buy-in: AAC reduces frustration for both child and family, which can improve overall device adherence in bilingual households.
• No risk to spoken language: Multiple studies confirm AAC supports (and often accelerates) spoken attempts in DHH children across all device types.

Bottom line for speech practice:

• CI (late) → Dynamic AAC is frequently recommended as a powerful supplement.
• BAHA or traditional HA → Dynamic AAC is situational and used only when spoken-language progress lags or additional factors (including ELL-related wear-time issues) are present.
• In all cases, start with a full AAC evaluation by an SLP experienced in both hearing technology and bilingual development. Trial the apps, monitor spoken-language gains, and fade support as the child’s auditory access and skills improve.

This approach is evidence-based, family-centered, and tailored to the diverse caseload you serve.

Auditory-Oral (A/O) Approach For School-Age Children

For school-age children (roughly ages 5–12) who spend most of their weekdays in regular or mainstream classrooms with teachers and hearing peers, and whose parents have limited daily involvement (“rare guests” during the school week), the Auditory-Oral (A/O) Approach is generally the more practical and effective choice.

Why Auditory-Oral Is Usually Better in This Situation

Factor	Auditory-Oral (A/O)	Auditory-Verbal (AVT)	Why It Matters for School-Age Kids with Limited Parent Time
Primary learning environment	Classroom/group setting with natural visual supports (lip-reading, gestures, facial expressions, board work, teacher cues)	One-on-one or parent-coached sessions emphasizing listening only (visual cues minimized)	Most of the child’s day is now in a noisy, multi-speaker classroom where visuals are naturally present and helpful.
How it handles real classrooms	Uses speechreading + contextual cues + hearing technology to understand teachers and peers in group settings	Trains the child to rely almost exclusively on listening; visuals are deliberately reduced	Classrooms are rarely “auditory-only.” Teachers move around, write on boards, and use gestures. A/O builds skills that match the actual environment.
Role of parents	Important but not the main “teacher”; school staff and therapists drive most of the work	Parents are the primary language teachers and must do daily coaching at home	When parents can only be “rare guests,” AVT’s core strength (intensive parent-led practice) is harder to deliver consistently.
Flexibility for school-age	Designed for group/classroom programs; easily integrated into mainstream or special education	Can continue into school age, but often shifts away from constant parent presence	Research notes that for older children, AVT sessions may happen without parents in the room, but the approach still assumes strong home reinforcement.

Key reasons A/O fits this scenario better:

• The bulk of language learning now happens at school, not at home. A/O directly prepares children for the real-world classroom by teaching them to combine listening with the natural visual cues they will encounter every day (e.g., watching the teacher’s face while she writes on the board, or following a group discussion).
• Classrooms are noisy and visually busy. Pure auditory-only practice (AVT) is excellent when it can be done consistently, but it’s challenging to maintain all day in a typical school setting without specially trained staff using AVT strategies 100% of the time.
• AVT is a family-centered, parent-coaching model. Studies repeatedly note that it requires substantial family commitment and daily home practice. When parents have limited time or presence during the week, this model loses much of its power.
• A/O can still be delivered effectively by school-based therapists, teachers of the deaf, or SLPs who work directly with the child in the classroom or pull-out sessions. It does not depend as heavily on parents being the main teachers.

That said, AVT still produces strong overall outcomes when families can commit fully. But in the specific situation — school-age child + heavy classroom time + limited parent availability — A/O is the more realistic and supportive fit. Many programs today use a flexible “listening and spoken language” (LSL) approach that leans toward A/O strategies in school while still encouraging strong auditory focus.

Practical Advice for Parents:

How to Support at Home (Even with Limited Time)

Even if you can only give 15–30 minutes a day or a focused block on weekends, your involvement still makes a big difference. Focus on quality over quantity and make it part of normal routines rather than extra “therapy time.” Here’s what works best with the Auditory-Oral approach:

1. Create a good listening environment (5 – 10 minutes a day)
• Sit face-to-face in a quiet room with the TV/radio off and good lighting on your face.
• Use the child’s hearing technology consistently (check batteries, keep the FM/DM system charged if they have one).
• Speak at a normal pace and volume — don’t shout.
2. Use natural visuals the same way the classroom does
• Let your child watch your face and lips while you talk (this matches A/O training).
• Point to objects or pictures only when needed — then fade the gesture so they learn to listen first.
• Repeat what your child says and expand it slightly: “You want milk? Yes, let’s get the milk from the fridge.”
3. Embed language in everyday routines (no extra time needed)
• Narrate what you’re doing while cooking, driving, or getting ready: “First we put on socks… now shoes… we’re walking to the car.”
• Read aloud every night (even 10 minutes). Choose books with rich vocabulary and talk about the pictures.
• Play simple listening games: “I spy something red that makes a sound” or “Simon says…” while facing each other.
4. Stay connected with the school team (biggest impact, least daily time)
• Ask for a quick weekly summary from the teacher or SLP: “What new words or concepts is the class working on?” Then use those same words at home.
• Request that the school share the child’s IEP goals or current vocabulary lists.
• Attend parent-teacher conferences or IEP meetings — even if you can’t be there every day, your input matters.
5. Weekend or evening “boost” activities (once or twice a week)
• 20 – 30 minutes of one-on-one play or reading where you deliberately use the same strategies the school is using.
• Watch short videos or shows together with captions on, then talk about what happened (combines listening + visual support).
• Practice “classroom-like” situations: pretend you’re the teacher giving instructions while the child follows directions by listening and watching your face.

Bottom line for parents: Your child’s school is now their main “language classroom.” The Auditory-Oral approach works with that reality instead of fighting it. Your role at home is to reinforce, not to carry the full load. Consistent, short, high-quality interactions still give your child a huge advantage. Many families in exactly your situation see excellent progress when school and home work together this way.

If the child already has very strong listening skills and the family can commit to more structured home practice on weekends, some elements of AVT can be layered in later. Talk with your child’s SLP or the school team about what best matches your family’s schedule — they can help blend the approaches.

Difference Between the Auditory-Oral Approach and the Auditory-Verbal Approach

Both the Auditory-Oral and Auditory-Verbal approaches are designed to help children who are deaf or hard of hearing develop listening and spoken language (sometimes called “LSL”). They do not use sign language as the main way of communicating. Instead, they rely on hearing technology (hearing aids or cochlear implants) to give the child access to sound. The goal for both is the same: to help your child learn to listen, understand, and speak so they can participate fully in the hearing world—at home, at school, and with friends.

The two approaches are very similar, but they differ in one important way: how much they use visual cues (like lip-reading, gestures, or facial expressions). This small difference can make a big impact on how your child’s brain learns to listen.

Side-by-Side Comparison

Feature	Auditory-Oral Approach	Auditory-Verbal Approach (AVT)
Main focus	Spoken language through hearing + helpful visual supports	Spoken language through listening only (hearing is the star)
Use of visual cues	Yes — speechreading (lip-reading), natural gestures, facial expressions, and body language are encouraged to help the child understand	No — visual cues are deliberately minimized or avoided so the child learns to rely on hearing alone
How therapy looks	Child may look at the speaker’s face; therapist or parent uses gestures or lip-reading to support understanding	Sessions happen face-to-face but without pointing to lips or using extra gestures; the child is encouraged to listen first
Parent role	Parents are important, but the therapist often works more directly with the child	Parents are the main “teachers” — the therapist coaches you so you can use the strategies all day long at home
Best for	Children who need extra visual help at first (e.g., very young children or those with additional challenges)	Families who want the strongest possible listening and spoken-language skills and can commit to daily practice
Typical setting	Can be used in clinics, schools, or home	Usually one-on-one parent-coaching sessions (often 30–60 minutes every 1–2 weeks)

Simple way to explain it to parents: “Think of it like learning to ride a bike. In the Auditory-Oral approach, we let the child use training wheels (visual cues like lip-reading) to feel more confident at first. In Auditory-Verbal therapy, we take the training wheels off sooner so the child learns to balance and ride using only their own balance (hearing). Both ways work, but research shows that learning without the extra supports often leads to stronger, more natural listening skills over time.”

Why Research Shows the Auditory-Verbal Approach Is Often Better

Many studies (including large reviews of children with cochlear implants) have compared the two approaches. Here’s what the evidence tells us:

• Children in Auditory-Verbal (AVT) programs frequently achieve age-appropriate listening, spoken language, and reading skills at higher rates than children in Auditory-Oral programs.
• In head-to-head comparisons, AVT groups often score higher in receptive and expressive language, speech clarity, and speech intelligibility than Auditory-Oral or total-communication groups.
• One major review found AVT produced better speech and language outcomes than standard oral communication (which is very similar to Auditory-Oral).
• About 80 % of preschool children who receive consistent AVT develop language skills right on track with hearing peers.

Why does AVT often give better results? When we remove visual “crutches,” the child’s brain is forced to work harder at listening. Over time, this builds stronger auditory neural pathways — the same pathways hearing children use naturally. The result is:

• Better ability to understand speech in noisy places (classrooms, playgrounds, restaurants).
• More natural-sounding speech.
• Easier transition to mainstream school without extra support.
• Stronger foundation for reading and academic success (because listening skills transfer directly to literacy).

Auditory-Oral is still excellent and can be a great starting point or long-term choice if a child needs extra visual support at the beginning. But once hearing technology is working well and the family is ready, moving toward AVT usually gives the best long-term spoken-language outcomes.

Important Things to Know

• It’s not one-size-fits-all. AVT works best when: (1) hearing technology is optimized early, (2) the family can practice every day, and (3) the child doesn’t have major additional disabilities that make pure listening very difficult.
• Some children start in Auditory-Oral and move to AVT once their listening skills improve.
• Progress is monitored closely. We track language growth every few months. If one approach isn’t working well, we can switch.

Bottom line for parents: If your biggest hope is for your child to listen and speak as naturally as possible and thrive in the hearing world, the research points to Auditory-Verbal Therapy as the approach that most often gives the strongest results. It puts you — the parent — in the driver’s seat and teaches your child to rely on their hearing the way hearing children do.

Supporting Your Child’s Communication with AAC at Home

                                Parent Handout

Your child’s AAC device is their voice.  

The more they see it used, the more they will use it.

What You Can Do Every Day

1. Keep the device nearby

·     Have it available all day (not just during therapy)

·     Bring it to meals, playtime, outings, and routines

2. Model simple words

·     While you talk, press 1–2 words on the device

·     Example:

o  “Let’s go outside” → press GO

o  “Do you want more?” → press MORE

No pressure - just show them how to use it

3. Use core words often

Focus on simple, powerful words:

·     go, stop, more, help, want, like, not, turn

Use the same words in many activities

4. Create chances to communicate

·     Give a little → wait → look expectant

·     Pause during fun activities

·     Hold a favorite item and wait

Wait 5–10 seconds

5. Accept all communication

·     Wrong button? That’s okay

·     Sounds + gestures + AAC = communication

Respond as if they communicated successfully

6. Make it fun and meaningful

·     Follow your child’s interests

·     Use AAC during play and routines

·     Celebrate every attempt 🎉

7. Be patient

Communication grows over time:

1.   Watching

2.   Using with help

3.   Using independently

Remember:

✔ Model more, test less

✔ Keep it simple

✔ Make it part of daily life

✔ Every attempt matters

Home AAC Routine Checklist

Use this daily to support your child’s communication:

Daily Use

☐ AAC device is within reach all day
☐ Device is used during meals
☐ Device is used during play

Modeling

☐ I model 1–2 words while speaking
☐ I use core words (go, more, help, etc.)
☐ I model without asking my child to repeat every time

Communication Opportunities

☐ I pause during activities
☐ I wait 5–10 seconds
☐ I give my child a reason to communicate

Responding

☐ I accept all communication attempts
☐ I respond even if the button is “wrong”
☐ I praise and encourage attempts

Consistency

☐ I use the same words across routines
☐ I follow similar strategies as school
☐ I share updates with teachers/SLP

Engagement

☐ I use AAC during fun activities
☐ I follow my child’s interests
☐ I keep communication positive and stress-free