Building a Robust AAC System for Real Communication
A robust AAC system is more than a set of buttons—it’s a complete language system that allows students to say anything to anyone at any time. For students with complex communication needs, access to robust communication is a right, not a privilege. This section explores what makes an AAC system truly robust, how to customize it, and why assessment and multi-modal support are key to success.
🧠 What Does a Robust AAC System Include?
A robust AAC system should be designed to support comprehensive, generative language use. This means including:
A full keyboard for spelling and novel message generation
Core vocabulary: high-frequency, flexible words like go, want, stop, you, more
Fringe vocabulary: topic-specific nouns categorized into areas like food, animals, people, and places
Pre-stored phrases for efficient communication of socially important messages (e.g., I don’t like that, Wait for me, Let’s do it again!)
Structured navigation to support movement across pages and categories
“If we only provide limited vocabulary, we only support limited thinking and expression.” — Dr. Janice Light, Penn State University
🔧 Popular Robust AAC Apps & Manufacturers
Tobii Dynavox device with TouchGuide overlay for improved touch access
Here are a few widely used, research-aligned systems that provide robust vocabulary:
All of these apps offer rich core and fringe vocabulary, customizable navigation, and are supported by professional training and evidence-based design.
✨ Customization Is Critical
AAC systems must be customized to the student’s needs and lived experience:
Add vocabulary that reflects their favorite people, routines, activities, and school topics
Adjust grid size, colors, or symbol types to accommodate vision or motor differences
Gradually expand vocabulary access in line with the student's growing skills
“The more we customize a system to reflect what’s meaningful to the student, the more likely they are to engage, learn, and use it.” — Dr. David McNaughton, Penn State University
🧭 Make Sure It’s Accessible
A robust AAC system must be accessible in every dimension:
Visual Access: Adjust grid sizes, symbol types, contrast settings
Motor Access: Consider switch scanning, keyguards, or eye gaze access
Symbolic Access: Use symbol types appropriate to the student’s current understanding—photos, picture symbols, or text
📋 Use the DTA AAC Skills Assessment
Before choosing a system or layout, evaluate the student’s:
Symbol use and understanding
Navigation ability across pages
Ability to construct messages or phrases
Use of multiple communication functions (e.g., requesting, commenting, asking questions)
The DTA AAC Skills Assessment was designed to help teams document a student's current communication skills and make informed AAC system decisions.
Page 1 of the AAC Communication Assessment Tool
“AAC must be tailored to meet the communicative competence of the individual and provide room for language development.” — Beukelman & Mirenda (2013)
📚 References
Beukelman, D. R., & Mirenda, P. (2013). Augmentative and Alternative Communication: Supporting Children and Adults with Complex Communication Needs (4th ed.). Paul H. Brookes Publishing.
Light, J., Beukelman, D., & Reichle, J. (2003). Communicative Competence for Individuals who Use AAC: From Research to Effective Practice. Paul H. Brookes Publishing.
