Speech Activities by Age

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

If you searched for speech practice for toddlers, this page gives you the parent-level answer: what the concern usually means, what.

Young child and speech therapist practicing mouth movements in a sunlit therapy room

Last updated 2026-07-09

TL;DR

Apraxia of speech (CAS) and autism co-occur far more than chance predicts. Some research suggests 30 to 65% of minimally verbal autistic children have CAS. The two look alike on the surface but need different treatments. An accurate diagnosis matters because motor-based speech therapy works for apraxia, while standard ABA-language approaches alone do not. AAC helps both.

What is the connection between apraxia of speech and autism?

Apraxia of speech is a motor problem, not a language problem. The brain knows what it wants to say but struggles to plan and coordinate the precise muscle movements that produce speech sounds. It is not muscle weakness. It is a timing and sequencing failure, and it sits entirely in the motor planning system.

Autism is a neurodevelopmental condition affecting social communication, sensory processing, and behavior. Speech differences in autism come from many sources: language processing, social motivation, sensory sensitivities, or motor control. That last one is where CAS enters the picture.

These two conditions show up together far more often than chance would predict. A 2020 study by Chenausky et al. in the Journal of Speech, Language, and Hearing Research estimated CAS may be present in 30 to 65% of minimally verbal school-age autistic children, though the wide range reflects how hard it is to assess kids who produce very little speech [1]. A smaller, more controlled 2011 study by Shriberg et al. found roughly 63% of a sample of verbal children with autism showed speech errors consistent with CAS [2].

Why so much overlap? Nobody knows for certain. One plausible idea is that some genetic pathways behind autism also affect the neural circuits that handle motor planning. FOXP2, a gene tied to verbal dyspraxia, has variants linked to autism. But the genetics here get messy fast, and no single-gene explanation covers most cases.

Here is the practical takeaway. If your autistic child has very few spoken words, inconsistent speech, or speech that sounds effortful and halting, put CAS on your radar. It is not automatically present. It is common enough that ruling it out changes the treatment plan.

How can you tell if a child has apraxia, autism, or both?

This is genuinely hard, and any honest clinician will tell you so. The surface presentations overlap heavily. A child with autism alone may have echolalia, limited spontaneous speech, unusual prosody, and inconsistent word production. A child with CAS alone may avoid speaking because attempts fail, show inconsistent errors, and understand far more than they can say. A child with both is doubly complicated.

Still, CAS has fingerprints. It specifically involves:

ASHA's practice portal on CAS lists three core diagnostic features: inconsistent errors on consonants and vowels, lengthened and disrupted coarticulatory transitions between sounds, and inappropriate prosody [3]. A speech-language pathologist (SLP) uses specific motor speech assessment tools to look for these patterns.

For a child who also has autism, the assessment gets harder. Some autistic children cooperate poorly with standardized testing, produce little volitional speech to sample, and have other motor differences that can mimic groping. The Dynamic Evaluation of Motor Speech Skills (DEMSS) and the Nuffield Dyspraxia Programme tools are built to work with limited speakers, which makes them more useful in this population.

What you need is a licensed SLP with real experience in motor speech disorders and ideally some experience with autism. A general ABA provider or a generalist SLP who mostly treats articulation delays may miss CAS entirely. Ask the evaluating SLP directly: "Are you assessing for motor speech disorders specifically?" See our overview of childhood apraxia of speech for the full diagnostic picture.

For more on what autism-specific speech therapy looks like, see autism spectrum speech therapy.

What percentage of autistic children have apraxia of speech?

The honest answer: there is no clean, definitive prevalence number. The research is real. The range is wide.

The best current estimates come from a handful of studies. Shriberg et al. (2011) found CAS features in about 63% of their sample of verbal children with autism [2]. Chenausky et al. (2020) estimated 30 to 65% of minimally verbal autistic school-age children may have CAS, noting the variability comes partly from how CAS is defined and partly from the challenge of assessing children who barely speak [1].

For context: CAS affects roughly 1 to 2 children per 1,000 in the general population, which makes it rare overall [4]. Autism affects about 1 in 36 children in the U.S., according to the CDC's 2023 data from the Autism and Developmental Disabilities Monitoring (ADDM) Network [5]. When both land in one child, the clinical picture gets much harder to read.

About 25 to 30% of autistic people are considered minimally verbal or nonspeaking, though estimates vary by study method [11]. Within that group, CAS appears especially common, which has led some researchers to argue that motor speech barriers, more than language or social barriers, drive minimal verbality in a large share of autistic children.

This does not mean every minimally verbal autistic child has CAS. Intellectual disability, severe language disorder, and other factors also limit speech output. It does mean CAS is one of the first things worth ruling in or out.

CAS and autism: key prevalence figures How often these conditions overlap and what the numbers mean 28% Autistic children who are minimally verbal or nonspea… 65% Minimally verbal autistic c… estimated to have CAS 63% Verbal autistic children wi… CAS-consistent errors (Shri… 0.2% CAS prevalence in the general child population Source: CDC ADDM Network 2023; Chenausky et al. 2020, J Speech Lang Hear Res; Shriberg et al. 2011; NIDCD

Why does it matter to distinguish CAS from other autism speech differences?

Treatment. That is the whole reason the distinction matters.

If a child's limited speech comes mainly from CAS, the effective treatment is motor-based speech therapy: high-frequency, repetitive practice of specific motor sequences, with systematic feedback and close attention to articulatory placement. The approaches with the most evidence for CAS include the Nuffield Dyspraxia Programme (NDP3), Dynamic Temporal and Tactile Cueing (DTTC), Rapid Syllable Transition Treatment (ReST), and Integrated Phonological Awareness intervention [6].

None of these are standard ABA verbal behavior programs. A child with undiagnosed CAS who spends years in standard verbal behavior therapy (PECS, mand training, verbal imitation drills) may make little progress on speech because the underlying motor planning problem never gets touched. That is a real and documented concern in the research.

The reverse is also true. If a child does not have CAS and their speech differences come from language processing or social-communication differences, motor speech therapy is not the main need. Treating every autistic child with limited speech as if they have CAS would be wrong too.

Accurate diagnosis points scarce resources at the right treatment. In a system where families wait months for evaluations and therapy slots run short, getting this right early is worth real effort.

See early intervention for why timing shapes outcomes across all speech and language conditions.

What does apraxia of speech look like in a child who also has autism?

Parents often describe the same pattern: the child seems to understand a lot, had words at one point that then faded or turned inconsistent, and clearly wants to communicate but the words come out wrong or not at all. The effort is visible on their face.

Specific things to watch for in a child who has autism and may also have CAS:

In autistic children these patterns hide more easily. The child may avoid speech situations altogether, produce echolalia (which can look like functional speech when it is not), or have sensory and behavioral factors that mask the motor planning problem underneath.

Seeing several of these together? Bring them up explicitly with the SLP. Do not assume they are already hunting for CAS unless you ask.

Which speech therapy approaches work for a child with both autism and CAS?

There is no single protocol built specifically for autism-plus-CAS, and the research base for this combined group is still small. But the best clinicians follow a set of principles.

Motor speech therapy has to be part of the picture. DTTC (Dynamic Temporal and Tactile Cueing) has some of the strongest evidence for CAS broadly and has been used successfully with some autistic children. The SLP models speech at various rates, then adds or fades physical cues as the child's accuracy improves. The Nuffield Dyspraxia Programme is widely used in the UK and internationally, with structured hierarchical targets. ReST focuses on prosody and tends to suit older children.

AAC (augmentative and alternative communication) should run alongside speech therapy, never instead of it. The research is clear that AAC does not suppress speech development, and it often supports it. For a child with CAS and autism, a reliable communication system while working on motor speech cuts frustration and keeps communication alive. See aac devices for a breakdown of options.

Therapy needs frequency. CAS demands a lot of practice. Apraxia Kids recommends at least 3 to 5 sessions per week for young children with significant CAS, though getting that much therapy through school systems or insurance is genuinely hard for most families [6].

Sensory and regulatory needs belong in the session structure from the start. A dysregulated autistic child cannot access motor learning. SLPs experienced with autism build sessions around regulation, preferred motivators, and reduced sensory load.

Tools like the Little Words app can support home practice between therapy sessions, giving consistent modeling and repetition in a low-pressure setting. It is not a replacement for an SLP. The gap between sessions is real, and structured home support fills part of it.

For a broader look at finding and working with the right clinician, see speech therapy speech therapist.

Does AAC help children who have both autism and apraxia?

Yes, and the evidence here is solid. AAC, from high-tech speech-generating devices to low-tech picture boards, is appropriate and beneficial for children with motor speech disorders and limited verbal output.

The fear parents voice most: "If my child uses AAC, will they stop trying to talk?" The research does not back this up. A meta-analysis by Millar, Light, and Schlosser covering 23 studies found no evidence that AAC inhibits natural speech development, and some evidence it supports it [7]. ASHA's guidance states AAC should be considered when speech is not meeting a child's communication needs, regardless of age, diagnosis, or the hope that speech may develop later [10].

For a child with CAS and autism, AAC solves an urgent problem: the child has things to say but the motor system is unreliable. A second route to communication cuts frustration, cuts the behavioral escalation that follows communication failure, and keeps learning going.

The specific system matters. Some autistic children do very well with full vocabulary-based systems (like Proloquo2Go or TouchChat) that allow generative communication instead of just requesting pre-set phrases. An SLP who specializes in AAC should drive this choice. See our full guide to aac devices.

One note. Some children with CAS also have fine-motor and pointing difficulties that affect device access. The AAC assessment should look at access methods too, including eye-gaze systems or partner-assisted scanning if needed.

How is apraxia of speech in autism diagnosed?

Diagnosis requires a licensed speech-language pathologist. There is no blood test, no scan, no checklist that confirms CAS. It is a clinical call, based on watching how the child's speech behaves.

For children with enough verbal output, standardized tools like the DEMSS (Dynamic Evaluation of Motor Speech Skills) or the Kaufman Speech Praxis Test for Children (KSPT) can be used. For minimally verbal children, the clinician observes whatever speech attempts the child makes and looks for the core CAS features: inconsistency, transition difficulty, prosody errors.

The evaluation should include:

For autistic children, the evaluation often needs several sessions to gather enough speech samples. A child who is anxious, unfamiliar with the clinician, or resistant to testing will not give a reliable sample in one 45-minute appointment.

Parents can push for a better outcome by:

For a deeper look at the assessment process, see apraxia of speech.

What do parents do if they cannot access a specialist?

Access to a motor speech specialist is genuinely limited across much of the country. Rural areas, underserved communities, and families with thin insurance coverage all hit real walls. There is no tidy fix, but there are workable paths.

Online speech therapy has grown a lot. Several platforms connect families with SLPs who have motor speech training, and telehealth for CAS has been studied directly. A 2021 study in the American Journal of Speech-Language Pathology found that telehealth delivery of DTTC was feasible and showed treatment gains comparable to in-person delivery in a small sample [8]. That is preliminary evidence, but it matters for families with no local option.

See online speech therapy for what telehealth platforms offer and what to look for.

Apraxia Kids (apraxia-kids.org) keeps a provider directory for CAS specialists, searchable by state. The directory does not screen for autism expertise specifically, but it is the best starting point for finding someone with actual motor speech training [6].

School-based SLPs are another route, though heavy caseloads often cap frequency at once or twice a week, below the recommended dose for significant CAS. If your child qualifies for an IEP, request a motor speech evaluation specifically. You have the right to request an Independent Educational Evaluation (IEE) at public expense if you disagree with the school's evaluation, under IDEA [9].

Home practice carries more weight when clinic time is scarce. Research on CAS keeps showing that frequency of practice drives improvement. An SLP can design a home program. The job at home is consistent daily repetition of the specific targets, with accurate feedback.

What causes CAS in autistic children, and can it be treated early?

The cause of CAS in any child, autistic or not, is usually unknown. In a minority of cases it links to a specific genetic condition (FOXP2 variants, 22q11.2 deletion syndrome, Angelman syndrome) or a neurological event (a stroke or brain injury). For most children, including most autistic children, no single cause is found [4]. As NIDCD puts it, CAS is a disorder in which the brain struggles to plan the movement sequences for speech, and it is not caused by muscle weakness [12].

Cause matters less than timing. CAS responds to treatment. Children who get appropriate motor speech therapy early, especially before age 5 or 6 when speech motor learning is most plastic, tend to make better gains than those who start later. Older children can and do improve. But earlier is generally better, and every year of missed treatment is a year of lost communication.

Early intervention under IDEA Part C (birth to age 3) covers speech-language services, and an autism diagnosis qualifies a child. After age 3, services move to the school system under IDEA Part B. If CAS is suspected in a toddler, the evaluation and treatment timeline should move fast [9].

For a detailed look at how early the window opens and what it covers, see early intervention.

What should parents ask the school IEP team about CAS and autism?

IEP teams do not always have a motor speech specialist on staff. The SLP assigned to your child may have broad skills but thin CAS training. That is solvable if you know how to approach it.

Questions worth asking at the meeting:

Under IDEA, schools must provide services that let the child make meaningful educational progress. Speech output directly affects educational participation. If the proposed frequency (often one session a week) is not enough for a child with significant CAS, you can dispute it and request an IEE.

Put everything in writing. If you ask for something verbally in a meeting, follow up with an email summarizing it. Parents who advocate clearly and specifically tend to get better service plans than those who hand the whole decision to the team.

Frequently asked questions

Can a child have autism and apraxia of speech at the same time?

Yes. Co-occurrence is common. Research suggests CAS may be present in 30 to 65% of minimally verbal autistic children, and roughly 63% of a verbal autistic sample in one study showed CAS-consistent speech errors. The two conditions have different causes and need different treatments, which is why identifying both matters. Having autism does not rule out CAS, and CAS does not rule out autism.

What is the difference between autism speech delay and apraxia?

Autism-related speech differences can come from language processing, social communication differences, or motor planning problems. Apraxia specifically involves the motor planning system: the brain struggles to coordinate muscle movements for speech despite knowing what it wants to say. The distinguishing features of apraxia are inconsistent errors on the same word, groping mouth movements, and prosody problems. A motor speech assessment by an SLP tells them apart.

How do I know if my autistic child has CAS or is just a late talker?

Late talkers usually have delayed but consistent speech development with no unusual error patterns. CAS shows inconsistent errors on the same words across attempts, visible effort or groping, vowel errors, and prosody problems. If your child's speech attempts are inconsistent rather than just delayed, or if they had words and lost them, ask an SLP specifically about motor speech assessment. A general developmental delay evaluation may not catch CAS.

Does apraxia of speech go away with autism therapy?

No. Standard ABA or general language therapy does not treat the motor planning disorder underlying CAS. CAS requires specific motor speech therapy, with high-frequency practice and systematic feedback on articulatory sequences. Without targeted treatment, CAS typically does not resolve on its own. Children who receive appropriate motor speech therapy do improve, often a lot, but the approach has to match the diagnosis.

What therapy works best for a child with autism and apraxia?

Motor speech approaches with the strongest evidence for CAS include DTTC (Dynamic Temporal and Tactile Cueing), the Nuffield Dyspraxia Programme, and Rapid Syllable Transition Treatment. An SLP with motor speech experience should deliver them, at high frequency (3 to 5 sessions per week for significant CAS). AAC should run alongside speech therapy, not instead of it. Therapy also has to account for autism-specific regulatory and sensory needs.

Can AAC make speech worse for a child with CAS and autism?

No. The research does not support this concern. A meta-analysis covering 23 studies found no evidence that AAC suppresses natural speech development. For children with CAS and autism, AAC gives them a reliable communication route while motor speech therapy works on verbal output. Withholding AAC in the hope it will push a child to talk is not supported by evidence and likely harms communication development.

How do I find a speech therapist who knows about CAS and autism?

The Apraxia Kids provider directory at apraxia-kids.org lists SLPs with specific CAS training, searchable by state. When you contact clinicians, ask directly about experience with both CAS and autism. Ask what motor speech assessment tools they use and what treatment approaches they apply. Telehealth is a real option if local specialists are unavailable: research supports telehealth delivery of CAS-specific therapies like DTTC.

Is apraxia more common in boys or girls with autism?

Autism is diagnosed more often in boys (roughly a 4:1 male-to-female ratio in most epidemiological studies). CAS in the general population is also somewhat more common in boys. But the research on autism-plus-CAS co-occurrence does not yet have strong data on whether the sex ratio differs within this combined group. This is an area where the field lacks good data.

What should I tell the school if I think my child has both autism and CAS?

Put your concerns in writing and request a specific motor speech evaluation, more than an articulation screener. Ask whether the evaluating SLP has CAS training. Under IDEA, schools must evaluate in all areas of suspected disability. If the evaluation does not address motor speech, you can request an Independent Educational Evaluation (IEE) at public expense. Specify in the IEP that you want the therapy methodology documented, more than the frequency.

Can a child with autism and CAS eventually speak clearly?

Many children with CAS and autism develop functional speech with appropriate treatment, especially when intervention starts early. Some children with significant CAS keep using AAC alongside speech throughout life, which is a successful outcome, not a failure. Prognosis depends on CAS severity, age at treatment start, frequency and quality of therapy, and other factors. No clinician can give a reliable individual prediction, but the ceiling is not fixed.

Does echolalia in autism have anything to do with apraxia?

Echolalia and CAS are distinct. Echolalia involves repeating heard speech, often as a communication or self-regulation strategy. CAS is a motor planning disorder. Still, some children with both autism and CAS produce echolalic speech more reliably than volitional speech, because rote and automatic speech draws on different neural pathways than novel motor planning. An SLP needs to assess both patterns separately. See our guide to echolalia for more.

At what age can apraxia of speech be reliably diagnosed in an autistic child?

CAS can be diagnosed in children as young as 2 to 3, though it is harder to call with confidence at very young ages when typical speech variability is still high. For autistic children with limited speech output, diagnosis may need extended observation across multiple sessions. Earlier diagnosis is better because motor speech therapy works best during peak speech-motor learning periods. If CAS is suspected in a toddler, do not wait for a later evaluation.

Is CAS in autism covered by insurance or school services?

School services under IDEA cover speech-language therapy when the disability affects educational performance, and CAS clearly qualifies. Insurance coverage for outpatient speech therapy varies by plan and state. Many states have autism insurance mandates requiring coverage of speech therapy for autism-related conditions, though CAS coverage may depend on how the claim is coded. Medicaid covers speech therapy for children who qualify. Ask your insurer specifically about motor speech therapy coverage.

Sources

  1. Journal of Speech, Language, and Hearing Research: Chenausky et al. (2020), Motor Speech Skills in Nonspeaking Children with Autism: CAS may be present in 30–65% of minimally verbal school-age autistic children
  2. Journal of Neurodevelopmental Disorders: Shriberg et al. (2011), Motor Speech Disorder Subtypes in Autism: Approximately 63% of a verbal autistic sample showed speech errors consistent with CAS
  3. ASHA: Childhood Apraxia of Speech (practice portal): ASHA identifies three core diagnostic features of CAS: inconsistent errors on consonants and vowels, lengthened and disrupted coarticulatory transitions, and inappropriate prosody
  4. ASHA: Apraxia of Speech (overview): CAS affects roughly 1–2 children per 1,000 in the general population
  5. CDC: Autism and Developmental Disabilities Monitoring (ADDM) Network, 2023 data: Autism affects approximately 1 in 36 children in the U.S. based on CDC 2023 ADDM data
  6. Apraxia Kids: Treatment and provider resources for childhood apraxia of speech: Evidence-based CAS treatments include NDP3, DTTC, ReST, and Integrated Phonological Awareness; at least 3 to 5 sessions per week is recommended for young children with significant CAS
  7. American Journal of Speech-Language Pathology: Millar, Light, and Schlosser (2006), The Impact of AAC on Natural Speech Development: Meta-analysis of 23 studies found no evidence that AAC inhibits natural speech development and some evidence it supports it
  8. American Journal of Speech-Language Pathology: Telehealth delivery of DTTC for CAS (2021): Telehealth delivery of DTTC was feasible and showed treatment gains comparable to in-person delivery in a small preliminary study
  9. U.S. Department of Education: Individuals with Disabilities Education Act (IDEA): IDEA Part C covers services for children birth to age 3; Part B covers school-age children; parents may request an IEE at public expense if they disagree with the school's evaluation
  10. ASHA: Augmentative and Alternative Communication (AAC) practice portal: ASHA guidance states AAC should be considered when speech is not meeting communication needs, regardless of age or expectation of future speech development
  11. CDC: Autism Data and Statistics: About 25–30% of autistic individuals are considered minimally verbal or nonspeaking, with estimates varying by study
  12. National Institute on Deafness and Other Communication Disorders (NIDCD): Apraxia of Speech: CAS is a motor speech disorder in which the brain struggles to plan the sequence of movements needed for speech; it is not caused by muscle weakness
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