A person does not answer when spoken to. They do not use speech to ask for help, tell you what hurts or explain why they are upset. It can be easy for people around them to assume they are not listening, do not understand or have nothing to say.
That assumption can profoundly shape the support they receive.
Being non-speaking tells us that a person does not rely on speech as their main form of communication. It does not, by itself, tell us what they understand, think, remember, feel or want.
Some non-speaking people understand a great deal of spoken language. Others understand certain words, routines, visuals or familiar communication better than complex speech. Comprehension may also change with stress, sensory overload, fatigue, health and context.
The respectful approach is neither to assume a person understands nothing nor to claim they understand everything. It is to recognise that speech and understanding are not the same ability, provide accessible ways to communicate, observe carefully and keep learning from the person.
Every person deserves to be spoken to with dignity, included in decisions and supported to express more than their basic needs.
What Does Non-Speaking Mean?
“Non-speaking” generally describes a person who does not use spoken words, or does not use enough reliable speech to meet their communication needs.
There is no single non-speaking experience. A person might:
- use no spoken words
- use a small number of words or phrases
- speak sometimes but lose access to speech during stress or overload
- repeat language without always being able to generate a new message
- understand more language than they can express through speech
- communicate using AAC, sign, gesture, writing, movement or behaviour
Some people prefer “non-speaking”; others use “non-verbal”, “minimally speaking”, “unreliably speaking”, “AAC user” or another description. Where possible, follow the person’s preferred language.
The term should describe communication—not become the person’s identity or a shortcut for their intelligence, personality or potential.
Why Speech and Understanding Are Not the Same
Speech is one way of expressing language. Producing speech requires many processes to work together, including planning and coordinating movement, breathing, voice, word retrieval, timing and regulation.
Understanding language involves different processes: attending to communication, recognising words or symbols, connecting them with meaning and interpreting them within context.
These abilities can influence each other, but they are not interchangeable. A person may have significant difficulty producing speech while understanding much of what is said. Another person may speak in full sentences yet find complex or abstract language difficult to understand.
This is why speech alone is a poor measure of comprehension.
| What We Observe | What We Cannot Safely Conclude |
|---|---|
| The person does not answer aloud. | That they did not hear, understand or have a response. |
| The person repeats part of the question. | That the words have no meaning for them. |
| The person does not follow an instruction. | That they did not understand it. They may disagree, be unable to begin, need more time or find the situation overwhelming. |
| The person selects the same option repeatedly. | That this always reflects their preference. The layout, prompting, motor demands or familiarity of the task may be affecting the response. |
Observation gives us a place to begin, not permission to read the person’s mind.
What Does It Mean to Presume Competence?
Presuming competence means approaching a person as someone capable of learning, communicating and participating, while still providing the support they need.
It means we do not remove opportunities simply because the person cannot prove their understanding through speech.
In practice, this can look like:
- speaking to the person in an age-respectful way
- including them in conversations about their life
- providing accessible information and communication options
- allowing enough time to respond
- teaching rather than assuming something is beyond them
- looking for strengths and emerging skills
- taking their refusals, preferences and distress seriously
Presuming competence does not mean assuming every message has been understood or pretending support needs do not exist. It does not mean accepting an interpretation without evidence.
A more balanced position is:
“I will not underestimate you. I will make communication accessible, check what works and remain open to being corrected.”
Communication Is Much Bigger Than Speech
All people communicate in more than one way. We use facial expression, gesture, posture, movement, silence, proximity, tone, writing and actions alongside words.
A non-speaking person may communicate through:
- eye gaze or looking towards an item
- reaching, pointing or leading someone
- facial expression and changes in muscle tension
- body movement, stillness or moving away
- sounds, vocalisations or changes in breathing
- gesture or sign language
- objects, photographs, symbols or visual boards
- writing, typing or texting
- a speech-generating device or another form of AAC
- changes in behaviour that indicate comfort, pain, uncertainty, interest or distress
These forms of communication deserve attention, but they must be interpreted carefully. A smile may indicate enjoyment, nervousness or a familiar social response. Moving away may communicate “no”, sensory discomfort, pain, uncertainty or simply a desire to go elsewhere.
We can form a hypothesis, then check it against patterns, context and the person’s other communication. Curiosity is more reliable than certainty.
What FABIC Clinicians Observe Beyond Words
Across FABIC clinician interviews, practitioners described communication as something to notice throughout the person’s whole presentation—not only in spoken answers.
One practitioner spoke about noticing a small smile, a relaxed body and increasing willingness to accept support as signs that trust was developing with a non-speaking person. Consistency also mattered: introducing herself in the same way, asking before sitting down and maintaining a predictable routine gave the person more information about what would happen.
Another practitioner described the importance of imagining what it might be like to rely on behaviour when speech is not available, then helping parents and support workers explore what the person may be trying to communicate. The clinician emphasised observation, data and considering multiple possible explanations rather than settling on a label such as “naughty” or “attention-seeking”.
These examples reflect a wider FABIC theme:
When communication is difficult to read, the answer is not to assume there is no message. The answer is to observe more carefully, understand the context and keep building a reliable shared language.
You can read more about FABIC’s approach in Why Do People Behave the Way They Do?
Behaviour Can Communicate Without Being a Deliberate Message
Behaviour often provides information, even when the person did not consciously plan it as communication.
For example:
- A person pushes a plate away when they have had enough.
- A child hits their head when pain, sensory overload or a difficult demand is present.
- A person sits by the front door when they expect to leave.
- A student tears a worksheet after the task becomes too difficult.
- A person becomes still when an unfamiliar worker approaches.
None of these behaviours has one guaranteed meaning. The behaviour may be influenced by communication, health, sensory experience, learning history, the environment, relationships and the response that follows.
When behaviour presents a risk, safety comes first. Understanding its possible function helps supporters move beyond simply trying to stop it and towards teaching a safer, more reliable way to communicate or meet the underlying need.
A Functional Behaviour Assessment can help gather information, identify patterns and develop a testable explanation rather than relying on assumptions.
What Is AAC?
Augmentative and Alternative Communication (AAC) includes ways of communicating that supplement or replace speech.
AAC may be unaided, meaning it does not require equipment:
- facial expression
- gesture
- manual signs
- body movement
It may also be aided:
- objects or photographs
- picture or symbol boards
- alphabet or word boards
- communication books
- tablet-based communication apps
- dedicated speech-generating devices
AAC is not only for requesting food, drinks or the toilet. A complete communication system should support the person to:
- say yes and no
- make choices and refuse
- ask questions
- express pain, emotion and discomfort
- comment, joke and share interests
- build relationships
- participate in education, work and community life
- report harm or ask for help
- express opinions, identity and goals
AAC should be available wherever communication happens—not locked away, kept only for therapy or removed because the person is distressed.
Research reviews have found that AAC intervention does not impede speech production and may be associated with modest gains in speech for some children. Communication access does not need to wait until every possibility for speech has been exhausted.
AAC Must Support the Person’s Own Communication
Communication support must protect authorship: the message should come from the person, not from a supporter directing the answer.
A communication partner may help by:
- positioning the device so it can be accessed
- reducing distractions
- modelling words on the person’s system
- allowing processing time
- supporting posture or access in line with professional recommendations
- checking that vocabulary is available
They should not steer the person’s hand, guide them towards a preferred answer or interpret an ambiguous movement as a complex message without reliable evidence.
This is especially important when communication concerns consent, allegations, health care, legal decisions, money or other high-stakes matters. A qualified speech pathologist can assess communication access and help build a system that is reliable, individualised and as independent as possible.
How to Communicate Respectfully With a Non-Speaking Person
1. Speak Directly to the Person
Do not address only the parent, support worker or practitioner while the person is present.
Instead of:
“Does he want to go outside?”
Try:
“Sam, would you like to go outside?”
A supporter can help interpret or facilitate access without replacing the person as the centre of the conversation.
2. Use Age-Respectful Language
A non-speaking adult is still an adult. Avoid baby talk, exaggerated praise and language that would not be used with a speaking person of the same age.
3. Ask How the Person Communicates
Do not assume that one picture board, yes–no system or communication app works for everyone. Ask the person where possible and consult their communication profile or people who know their established system.
4. Allow Time
After asking a question, pause. The person may need time to process the language, locate vocabulary, coordinate movement and produce a response.
Repeating or rephrasing too quickly can restart that process.
5. Make the Question Answerable
Open-ended questions may require vocabulary or motor access the person does not yet have. That does not mean their thoughts are simple.
Depending on the person, support could include:
- showing two visible choices
- providing a “something else” option
- using a visual scale
- asking one question at a time
- writing the key information
- allowing a response through the person’s AAC
6. Confirm Without Interrogating
If a message is unclear, check respectfully:
- “You looked towards the door. Are you saying you want to leave?”
- “I think you selected ‘pain’. Can you show me where?”
- “You said no. I’ll stop.”
Do not repeatedly test a person simply because their communication looks different.
7. Make Room for More Than Needs
If every interaction asks the person what they want to eat or whether they need the bathroom, they receive little opportunity to build relationships or express a full personality.
Comment, share, joke, discuss interests and make space for opinions. Communication is participation, not only requesting.
A Practical Communication Comparison
| Common Barrier | More Accessible Approach |
|---|---|
| Speaking only to the support worker | Address the person first and include support as needed. |
| Assuming no response means “no understanding” | Pause, observe and offer the person’s established response method. |
| Asking several questions at once | Ask one clear question and allow processing time. |
| Holding the AAC device out of reach until it is time to “work” | Keep the communication system charged, available and accessible throughout the day. |
| Only offering yes or no | Include refusal, uncertainty, “something else” and richer vocabulary. |
| Interpreting every behaviour with certainty | Describe what was observed, consider possibilities and check patterns. |
How Do We Know What a Person Understands?
Understanding is not best measured by one instruction, one appointment or whether the person performs on demand.
Assessment may consider:
- responses across familiar and unfamiliar settings
- understanding of objects, pictures, symbols, written words and speech
- whether hearing, vision, movement or sensory factors affect access
- how much processing time is needed
- the effect of anxiety, fatigue, pain or dysregulation
- whether the motor response required by the task is reliable
- information from the person and people who know them well
- performance over time rather than a single result
A person might understand a direction but not have the motor planning, regulation or motivation to carry it out. They might recognise a word in a familiar routine but not in a new environment. They may understand more when information is written or shown visually.
A speech pathologist can assess receptive and expressive communication, trial suitable AAC and help supporters distinguish what is known from what is assumed. Occupational therapists may also help when motor, sensory or access needs affect communication.
Non-Speaking Communication During Overwhelm
Communication often becomes less reliable when a person is overwhelmed. Someone who usually types, points or uses some speech may need more time, fewer words, reduced sensory input or a simpler way to say “stop”, “help” or “break”.
Supporters can prepare by ensuring that:
- essential words are easy to find
- a low-effort method for yes, no, stop and help is available
- the AAC system remains within reach
- the person’s early signs of overload are documented
- staff know how long to wait for a response
- the environment can be made quieter or less demanding
- the person knows what will happen next
Do not insist on a detailed explanation at the peak of distress. Safety and regulation may need to come before investigation.
Learn more in Why Fewer Words Can Help When Someone Is Overwhelmed and What to Do When Someone Is Dysregulated.
Consent, Choice and the Right to Say No
A non-speaking person’s communication must be taken seriously in decisions about their body, relationships, support and daily life.
Choice is not meaningful if:
- the person cannot access the available options
- supporters recognise “yes” but ignore “no”
- the preferred answer is repeatedly presented until selected
- refusal is automatically labelled as challenging behaviour
- the person is not given enough time or information
Supporters should learn how the person reliably communicates agreement, refusal, uncertainty, pain and the wish to stop.
For complex health, legal or financial decisions, communication support does not remove the need for appropriate consent and capacity processes. Independent advocacy, qualified assessment or other safeguards may be required.
The United Nations Convention on the Rights of Persons with Disabilities recognises communication broadly, including augmentative and alternative communication, and calls for accessible means and formats to support freedom of expression and access to information.
Common Mistakes That Silence Non-Speaking People
Assuming Behaviour Is Meaningless
A change in movement, expression, routine or behaviour may be the clearest information currently available. Observe it without claiming certainty.
Talking as Though the Person Is Not Present
Even when understanding is uncertain, private or disrespectful discussion in front of the person can cause harm. Speak as though the person may understand and protect their dignity.
Making Access to AAC Conditional
Communication should not be earned through compliance. Removing a device as punishment removes the person’s voice.
Requiring Speech Before Responding
“Use your words” is not useful when speech is unavailable. Respond to the person’s established communication and continue building more reliable options.
Giving Only Childlike Vocabulary
A person cannot communicate a mature opinion if their system contains only toys, snacks and basic requests. Vocabulary should grow with their age, interests, relationships and life.
Guessing Everything for the Person
Familiar supporters can recognise patterns, but constant guessing can reduce opportunities for independent communication. Offer access, model language and allow time.
Assuming One Successful Response Proves Everything
Communication needs to be reliable across people, settings and time. High-stakes conclusions should not rest on one ambiguous selection or a response shaped by another person.
Using Body Life Skills to Understand Communication
The FABIC Body Life Skills Program offers a practical way to understand behaviour without making it the person’s identity:
| Part | Communication Question |
|---|---|
| BODY | What can we observe in the person’s movement, expression, AAC, vocalisation or behaviour? |
| LIFE | What is happening around the person? What might they be trying to access, avoid, understand or communicate? |
| SKILLS | What communication skill, partner response or environmental support could make expression more reliable? |
For example, a person may throw a cup when it is empty. The BODY is the observable action. The LIFE situation might involve wanting more, disliking the drink, discomfort or not knowing what happens next. The SKILL could involve reaching a “more”, “finished”, “different” or “help” message—and supporters responding consistently when it is used.
The aim is not simply to stop the cup from being thrown. It is to understand what is happening and build a more effective way for the person to influence their life.
Building a Communication Profile
A practical communication profile can help families, practitioners, educators and support workers respond consistently.
It may include:
- how the person communicates yes, no, stop, pain, help and “I don’t know”
- their AAC system and how it should be positioned or accessed
- how much processing time they need
- signs of comfort, interest, fatigue and overload
- language or visual formats that are easiest to understand
- hearing, vision, motor and sensory access needs
- important interests and conversation topics
- what supporters should avoid
- what to do when communication breaks down
- who to contact when the system needs review
The profile should be developed with the person and reviewed as skills, preferences and circumstances change. It should help new supporters communicate respectfully without reducing the person to a checklist.
How Families and Support Teams Can Become Better Communication Partners
Communication is not a skill located only within the non-speaking person. Partners also need skills.
A strong communication partner:
- notices attempts and responds to them
- keeps AAC available
- models communication without demanding imitation
- waits without staring or pressuring
- uses accessible language
- accepts refusal and disagreement
- checks interpretations
- creates reasons to communicate beyond testing and requesting
- shares successful strategies across the team
- seeks review when the system is not meeting the person’s needs
If a person is not using the communication system, ask why before deciding they are unwilling. The vocabulary may be limited. The device may be out of reach, uncharged, difficult to see, physically tiring, poorly understood or associated only with demands.
A strategy that is not working is information about the strategy, the access or the environment—not evidence that the person has nothing to communicate.
When Professional Support May Help
Professional support may be helpful when:
- the person has no reliable way to express basic needs, refusal, pain or distress
- communication changes across environments or supporters
- AAC is unavailable, outdated or rarely used
- motor, sensory, hearing or vision needs affect access
- behaviour may be communicating unmet needs
- supporters disagree about what the person understands
- communication breakdowns are affecting safety or quality of life
- the person needs richer ways to participate in decisions and relationships
A multidisciplinary approach may involve speech pathology, occupational therapy, psychology, behaviour support, medical professionals and the people who know the person well.
A sudden loss of speech, communication or other previously available skills requires appropriate medical assessment. Do not assume a sudden change is behavioural.
Frequently Asked Questions
Does Non-Speaking Mean a Person Has an Intellectual Disability?
No. Some non-speaking people have an intellectual disability and others do not. Speech ability alone cannot determine intellectual ability. Assessment must account for communication, motor and sensory access.
Does a Non-Speaking Person Understand Everything?
Not necessarily. Understanding varies between individuals and situations. The point is that lack of speech does not prove lack of understanding. Provide accessible communication and assess carefully rather than assuming either extreme.
Can AAC Stop a Child From Learning to Speak?
Available research does not show that AAC prevents speech development. Reviews have found that AAC intervention does not impede speech production and may support modest speech gains for some children. Its immediate purpose is to provide communication access.
Should We Use Pictures, Sign or a Device?
The most appropriate system depends on the person’s communication, motor, sensory, visual, cognitive and environmental needs. Many people use several methods. Assessment and ongoing support from a speech pathologist can help.
What If We Cannot Tell Whether the Person Is Saying Yes or No?
Do not guess in a high-stakes situation. Work with a speech pathologist and the person’s team to establish a response method, test its reliability and document how agreement, refusal and uncertainty are communicated.
Is Behaviour Always Communication?
Behaviour always provides information, but it is not always a deliberate message and does not have one fixed meaning. Consider context, health, sensory factors and patterns, and check interpretations wherever possible.
Should We Speak Normally Around a Non-Speaking Person?
Speak respectfully and in an age-appropriate way, while adjusting length, complexity, pace or format to the person’s needs. Do not confuse accessible language with childish language.
How FABIC Can Help
FABIC supports children, young people and adults to understand behaviour, strengthen communication and build practical skills for daily life.
FABIC’s multidisciplinary services include behaviour support, psychology, counselling, occupational therapy and speech pathology. Support can involve the person, family members, educators, carers and the broader support team so that communication is understood and responded to more consistently.
The goal is not to make every person communicate in the same way. It is to understand the individual, increase meaningful communication and support greater choice, participation, safety and quality of life.
Learn more about FABIC Speech Pathology services.
Learn more about FABIC Behaviour Support Practitioner services.
Speech is one way to communicate. It is not the measure of whether a person is thinking, listening, learning or worthy of being included.
When we stop asking, “Why aren’t they speaking?” and begin asking, “How does this person communicate, and what do we need to do to make that communication accessible?”, new possibilities emerge.
If communication difficulties are affecting participation, relationships, behaviour or safety, FABIC can help you explore what is happening and identify individualised next steps.
General information only: This article is educational and does not replace individual medical, speech pathology, occupational therapy, psychological, legal or behaviour support advice. Follow any current communication, health, behaviour support or safety plan developed for the person. If there is an immediate risk of serious harm or a medical emergency, call Triple Zero (000).
References and Further Reading
- FABIC. The Body Life Skills Program.
- FABIC. FABIC Ethos and Principles of Client Care.
- FABIC. Why Do People Behave the Way They Do? Understanding What Sits Beneath Behaviour.
- FABIC. What Is a Functional Behaviour Assessment, and What Actually Happens?
- American Speech-Language-Hearing Association. Augmentative and Alternative Communication.
- Australian Human Rights Commission. Creating Accessible and Inclusive Communications.
- United Nations Human Rights Office of the High Commissioner. Convention on the Rights of Persons with Disabilities, including Articles 2, 9 and 21.
- Trembath, D., Varcin, K., Waddington, H., Sulek, R., Bent, C., Ashburner, J., Eapen, V., Goodall, E., Hudry, K., Roberts, J., & Whitehouse, A. (2022). National Guideline for Supporting the Learning, Participation, and Wellbeing of Autistic Children and Their Families in Australia. Autism CRC.
- Crowe, B., Machalicek, W., Wei, Q., Drew, C., & Ganz, J. (2022). Augmentative and Alternative Communication for Children With Intellectual and Developmental Disability: A Mega-Review of the Literature. Journal of Developmental and Physical Disabilities, 34, 1–42.
- 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: A Research Review. Journal of Speech, Language, and Hearing Research, 49(2), 248–264.
- NDIS Quality and Safeguards Commission. Positive Behaviour Support Capability Framework, Version 3.
