Matrix training AAC plans should keep the person's communication system available throughout assessment, teaching, and probes. Every matrix component must be findable and usable through the person's access method. Define accepted aided and unaided responses, wait time, partner behavior, and backup communication. A missing word, blocked device, positioning problem, or unavailable access support is a system failure, rather than evidence that a combination was unlearned.
Plan matrix training AAC access
Audit the vocabulary for every component and combination. Check page paths, symbol meaning, grammar, motor effort, device position, charging, backup mode, sensory access, and partner wait time before collecting baseline.
Keep response forms equivalent
A goal may accept speech, a selected AAC sequence, sign, writing, or another reliable form. State whether different forms represent the same target. Avoid requiring speech, eye contact, or a new navigation path solely for scoring convenience.
Protect independent probes
AAC remains an ordinary support during probes when it is the person's communication method. The matrix-training tutorial distinguishes taught and probed combinations. Partners can make the system available and use agreed access supports without navigating to the answer.
Use the access sources
ASHA says AAC users should always have access to their tools or devices. The Ethics Code addresses nondiscrimination, client involvement, medical needs, assent when applicable, risk, and evaluation.
A practical example
Leah has nine due probes. Her vocabulary and device position are ready for 7/9. She answers 5/7 valid probes. The young-child study also kept directly taught and untaught combinations distinct. Leah's two access failures remain in system-readiness reporting.
Questions families can use
Can the person produce every component? Is the device available in all phases? Which partner action is allowed? What invalidates a trial? Can the person pause, decline, comment, or correct an answer?
Sources
- Behavior Analyst Certification Board, BCBA Test Content Outline, 6th edition
- Curiel and colleagues, A Tutorial for Implementing Matrix Training in Practice
- Curiel and colleagues, Matrix Training for Expanding the Communication of Toddlers and Preschoolers With Autism Spectrum Disorder
- Niland and colleagues, Comparing Matrix-Training Procedures with Children with Autism Spectrum Disorder
- Frampton and colleagues, The Use of Matrix Training to Promote Generative Language with Children with Autism
- Simeone and colleagues, Miniature Linguistic Systems for Individuals With Autism Spectrum Disorder: A Systematic Review and Meta-Analysis
- Behavior Analyst Certification Board, Ethics Code for Behavior Analysts
- American Speech-Language-Hearing Association, Augmentative and Alternative Communication
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