Assessing Stuttering in a Nonverbal Client
“Nonverbal” is often used to describe a person who does not speak, although many communicate through gesture, vocalisation, typing, symbol systems or speech-generating devices. Ask which label and methods the person prefers. Stuttering disrupts the timing and flow of speech, so someone producing no words cannot demonstrate the full pattern. Evaluation must determine whether stuttering is present, absent or currently indeterminable.
This distinction matters because reduced speech can reflect developmental language difficulty, apraxia of speech, cerebral palsy, hearing impairment, autism, selective mutism or acquired neurological change. It can also be temporary. The aim is not to force a familiar picture onto the person, but to describe communication, barriers and participation goals accurately.
The client should help define the questions whenever possible, through whatever system reliably supports their views. Families, teachers, support workers and clinicians contribute history and context, but should not speak over the client. Consent or assent, privacy, cultural safety and the right to pause are essential. A useful report joins clinical findings with the person’s preferred ways of communicating.
Australia’s service pathways affect how an evaluation is organised. Speech pathologists work in private practice, public services and multidisciplinary teams; eligible clients may use a GP-referred Medicare pathway, while NDIS plans can support communication and capacity-building needs. Access differs between metropolitan and regional areas, and telehealth can broaden reach without replacing local relationships. These practical issues belong in the referral discussion from the start.
Clarify the Referral and Communication Profile
Start with the referral question rather than the label attached to it. Clarify whether “nonverbal” means no speech, no intelligible speech, or limited and selective speech, and whether that status is stable or recent. Record the person’s communication methods, preferred partners, previous evaluations, medical history and the goals behind the referral. Distinguishing a longstanding communication difference from a sudden change can determine whether routine or urgent medical review is needed.
Four complementary sources help establish a reliable clinical picture:
| Evidence source | What to collect | What it clarifies | Important caution |
|---|---|---|---|
| Direct speech | A natural sample and brief familiar attempts | Repetitions, blocks, prolongations, tension and variability | Avoid pressure, competition or distress |
| AAC interaction | Choices, refusals, turns and repair attempts | Communication intent, access method and response time | Repeated activation is not automatically stuttering |
| Partner interaction | Prompting, interruptions, turn-taking and repair | Participation barriers and partner strategies | One partner may change performance |
| History and records | Onset, languages, medical events and previous goals | Differential possibilities and urgency | Labels and reports may be outdated or incomplete |
Across all sources, describe more than a disfluency percentage. Note the type and location of disruptions, whether they are voluntary or involuntary, accompanying physical behaviour, the communication intent involved and the listener’s response. Percentages can be misleading when opportunities are few or uneven, so include short examples and the context in which they occurred.
Standardised reading and sustained imitation should not be imposed if they cause distress or produce an unrepresentative performance. Familiar activities, turn-taking games, choice-making and supported conversation often elicit more useful information. Where possible, sample on different days and in more than one setting, since stuttering and communication effort can fluctuate with fatigue, anxiety, familiarity and the responsiveness of the listener.
Build a Culturally and Linguistically Responsive Sample
Australian communication assessment cannot assume one standard variety. Melbourne, Sydney and Brisbane contain especially diverse linguistic communities, and many families use English alongside Arabic, Cantonese, Mandarin, Punjabi, Greek, Italian or other languages. Record every language used for meaningful communication. An unfamiliar pronunciation, code-switching or pause should not be classified as stuttering merely because it differs from the clinician’s own English.
With Aboriginal and Torres Strait Islander clients, cultural safety should shape who is present, how questions are framed and how observations are interpreted. Do not treat reduced eye contact, indirect responses or pauses as disengagement without checking with the person and family. An interpreter may be needed for history-taking and consent, but interpreting can alter timing and remove useful conversational cues. Whenever possible, include a sample in the person’s strongest language with support from a bilingual clinician or familiar communication partner.
Australian English pragmatics also influence how communication is judged. Colloquial expressions such as “no worries” or “good on ya”, understatement, informal humour and conversational overlap may carry meaning that is not evident in a literal question. For clients with language or pragmatic differences, offer symbolic responses and explain idioms without treating local speech habits as deficits. Additional professional reading is available through Tazkra resources, with each source checked for clinical relevance, cultural safety and accessibility.
Examine Speech, Language and Motor Speech
Begin with a broad communication examination rather than a search for stuttering alone. Consider receptive and expressive language, functional communication, hearing, vision, oral-motor control, attention and the ability to access an AAC system. Referral for audiology, medical review or another specialist may be needed before a speech formulation is finalised. A communication difference should not be attributed automatically to a neurodevelopmental diagnosis or assumed to be intentional.
If vocalisations or attempted words occur, examine recurring repetitions, blocks, prolongations, changes in voice quality, strained airflow and associated movements such as jaw tension, blinking or disrupted breathing. Record whether these behaviours appear only in demanding speech or also during greetings, automatic phrases, play and AAC use. A repeated AAC selection, a vocalisation used for emphasis and a stuttering-like disruption may look similar but serve different purposes.
History should establish onset, progression, consistency across settings, language exposure, hearing changes, medication, injury, illness and developmental milestones. A sudden loss of previously established speech or communication, new weakness, seizures or rapid deterioration requires urgent medical advice; in Australia, use 000 for emergencies or an urgent general-practitioner and emergency-department pathway. “No stuttering observed” is a valid finding, but it does not mean stuttering has been ruled out when the available speech sample is too limited.
Evaluate AAC, Motor Skills and Partner Support
AAC is part of a person’s communication, not a substitute used only when speech fails. Evaluate how the person expresses choice, refusal, emotion, information and social connection across available systems. Trial several options—gesture, drawing, communication books, symbol sequences and electronic devices—against the person’s goals rather than starting with a preferred technology. The most advanced system is not automatically the most accessible or effective.
Access must be examined alongside motor and sensory conditions. Consider hand and finger control, head and eye movement, positioning, fatigue, vision, hearing, scanning speed and the demands placed on the communication partner. A device that requires repeated presses may produce physical fatigue or become frustrating, while an indirect method may hide a genuine attempt to speak. Allow time to explore access methods and observe whether the person can initiate, repair and personalise messages.
Participation also depends on the people surrounding the client. Observe whether partners allow processing time, ask one question at a time, wait for responses, avoid finishing sentences and respond to ambiguous messages with repair options. Compare performance with familiar and unfamiliar partners, because excess prompting can suppress both speech and AAC. In regional and remote Australia, combine telehealth review with practical strategies for home, school or day-care, supported by local professionals who can maintain contact between appointments.
Turn Findings into Practical Recommendations
A stuttering formulation should arise from agreement between current observations, history and the client’s communication profile. If the evidence is insufficient, document what was not observed, which settings or languages remain unexamined and what would help resolve uncertainty. Avoid assigning a diagnostic label merely because a referral used it, while recognising that a carefully qualified finding can guide appropriate support.
The report should state the client’s strengths, preferred communication methods, observed disruptions, variability, physical concomitants, functional impact and contextual influences. It should also record medical and cultural considerations, referrals, partner strategies, measurable goals, responsible professionals, funding pathways and a review date. For an NDIS request, connect recommendations to specific functional needs rather than relying on broad diagnostic language alone.
Families may bring information from many online sources, so authorship, references, publication date, conflicts of interest and population fit should be checked. A polished but unrelated online guide review demonstrates why topic relevance and evidence quality must be judged independently of appearance; it offers no basis for conclusions about stuttering assessment or treatment.
Recommended actions are:
- Ask the client to rank communication goals and preferred methods, including how they want others to respond when a message is unclear.
- Sample natural conversation, supported attempts and AAC use across familiar settings and every relevant language without using one result as a fixed baseline.
- Examine hearing, oral-motor function, language, sensory needs and AAC access before attributing any disruption to stuttering.
- Record concrete examples of speech and communication behaviour, including physical signs, partner responses and effects on participation.
- Establish functional goals, review dates, funding responsibilities and clear medical escalation pathways within the written plan.
Put the Plan into Action
Turn the findings into coordinated support rather than a standalone diagnosis. Review the report with the client, share it with chosen communication partners, complete indicated hearing or medical referrals, and record who will provide each strategy. Communication partner training may be as important as direct therapy, particularly when AAC access, reduced speech or unfamiliar listeners reduce the client’s opportunities to participate.
The free quarterly JSTAR offers downloadable articles on stuttering therapy, research, advocacy and related communication issues. Practitioners, students and families can browse the current JSTAR articles, select evidence relevant to their work and share it with a local team. Readers can also contribute research or lived-experience perspectives through the journal’s submissions process. Subscribe, involve the client in the next steps, and begin the agreed communication plan with their goals at its centre.