Approximately 25–30% of autistic people are nonspeaking or minimally speaking. AAC — from picture boards to speech-generating devices — enables communication and must never be withheld.
Nonspeaking autism refers to autistic individuals who do not use speech as a primary or functional communication mode. Estimates consistently place the proportion of autistic people who are nonspeaking or minimally speaking at 25–30%. “Minimally speaking” typically refers to individuals with fewer than 30 functional spoken words — sufficient for limited self-expression but not for the full range of human communication.
Language is often conflated with intelligence, but these are entirely separate capacities. Nonspeaking does not equal non-thinking. Many nonspeaking autistic individuals — including prolific authors, educators, and advocates — have demonstrated extensive cognitive and communicative abilities once appropriate communication supports were provided. The barrier is not intelligence; it is access to a reliable communication method.
The term “nonspeaking” is increasingly preferred over “nonverbal” in the autistic community. “Nonverbal” can imply having no language or nothing to say. “Nonspeaking” more accurately describes the situation: the person does not use spoken speech, not that they lack communication or cognition.
Augmentative and Alternative Communication (AAC) refers to any communication method that supplements or replaces spoken speech. AAC is not a single device or system — it encompasses a spectrum from unaided to high-tech approaches, and many people use multiple AAC methods across different contexts.
A critical message from speech-language pathology research and autistic self-advocates alike: AAC access is a right, not a last resort. Families and clinicians should not wait until speech attempts have definitively failed before introducing AAC. Early AAC introduction supports communication development and does not interfere with speech development — the evidence on this point is clear. Learn more about speech therapy for autism.
Low-tech AAC includes options that require no electronics:
High-tech AAC uses electronics and software:
The right AAC system depends on the individual’s motor abilities, vision, literacy, sensory preferences, and communication goals. An SLP with AAC specialization is essential for identifying the right system and supporting implementation.
In Ontario, AAC assessment and implementation services are available through:
“Presume competence” is a foundational principle in AAC and nonspeaking autism advocacy. It means: assume that a nonspeaking autistic person understands what is being said to and about them. Assume that they have complex thoughts, preferences, and feelings. Assume that with the right communication tools, they can express themselves.
Presuming competence has real consequences. When clinicians, educators, or family members presume incompetence in a nonspeaking autistic person, they are less likely to provide rich language input, appropriate AAC, or educational opportunities. This creates a self-fulfilling prophecy. Conversely, when nonspeaking autistic individuals are presumed competent and given full access to language and communication tools, many demonstrate abilities that were previously invisible.
Autistic self-advocates including Amy Sequenzia, Carly Fleischmann, and many others have offered powerful testimony about the difference that presuming competence and providing AAC made in their lives. Families navigating nonspeaking autism deserve access to this community knowledge.
Nonspeaking autism refers to autistic individuals who do not use speech as their primary or functional communication mode. Estimates suggest 25–30% of autistic people are minimally speaking (limited functional speech) or nonspeaking. This is not a measure of intelligence or cognition — many nonspeaking autistic individuals are highly literate and have rich inner lives. The term "nonspeaking" is preferred by many autistic self-advocates over "nonverbal," which can imply having nothing to communicate.
Augmentative and Alternative Communication (AAC) refers to any communication method used in place of or to supplement speech. AAC includes high-tech options (speech-generating devices, tablet apps) and low-tech options (picture boards, letter boards, PECS). AAC gives nonspeaking autistic individuals a reliable means of expressing their needs, thoughts, and feelings — often for the first time. Many nonspeaking autistic people who access appropriate AAC show dramatic expansions in communication.
No. This is one of the most persistent myths about AAC, and the research is unambiguous: AAC does not prevent speech development. Multiple studies and systematic reviews have found that AAC introduction is associated with maintained or increased speech development in autistic children, not decreased speech. Families should not delay AAC introduction while waiting to see if speech develops — early AAC access is critical.
AAC spans from low-tech to high-tech: Picture Exchange Communication System (PECS) uses picture cards to communicate; communication boards provide symbols arranged for quick selection; robust AAC apps like Proloquo2Go, TouchChat, and LAMP Words for Life provide comprehensive symbol-based communication on tablets; dedicated speech-generating devices (SGDs) like those from Tobii Dynavox offer durable, accessible hardware; and spelling-based communication (letter boards, keyboards) is used by many literate nonspeaking autistic individuals.
AAC assessment and implementation is typically led by a speech-language pathologist (SLP). In Ontario, AAC SLP services can be accessed through Children's Treatment Centres, private SLP clinics, and school board SLP services. AAC devices and SLP sessions are eligible expenses under the OAP Childhood Budget. The Assistive Devices Program (ADP) through the Ontario Ministry of Health provides partial funding for speech-generating devices for eligible individuals.
Next steps
Verified Facts
1 in 50 — According to the 2019 Canadian Health Survey on Children and Youth, about children and youth aged 1 to 17 in Canada had an autism diagnosis
Evidence supports autism screening and intervention commencing in the first 2 years of life — earlier identification directly enables earlier intervention during the highest neural plasticity window
WHO recommends accessible, community-based early interventions for children with autism — timely evidence-based psychosocial interventions improve communication and social engagement
87,692 — children are registered in the Ontario Autism Program
23.1% — 23,875 children enrolled in Core Clinical Services; 20,293 have active funding agreements ()
Stay Updated
Join 2,400+ Ontario families. We email only when something notable happens — new FOI data, policy changes, or important next steps.
No spam. Unsubscribe anytime. Your privacy is protected.