Understanding Motor Planning in AAC

If you have heard that you should never move buttons in LAMP Words for Life or Speak for Yourself, motor planning is the reason. Understanding it changes how you customize these systems — and why they are designed the way they are.

What motor planning is

Motor planning is the brain’s ability to learn and automate a sequence of movements, the same way you can type or tie your shoes without thinking about each step. Motor-planning AAC systems put every word in a fixed location and reach it through a consistent sequence of taps. With practice, the path to a word becomes automatic — the user stops searching the screen and simply produces the word, fast and reliably.

Why consistent placement matters

• The path to each word never changes, so muscle memory can take over.
• Words stay in the same spot whether the vocabulary is small or large, so a beginner and an advanced user use the same motor plan.
• Hiding a word does not move the words around it — the location is preserved for later.

How to customize without breaking the plan

1. Add new vocabulary in empty spots rather than relocating existing words.
2. When a word is too advanced, hide it instead of removing or moving it, so its place is reserved.
3. In Speak for Yourself, use the Open/Close feature to reveal or hide words while keeping every location fixed.
4. Resist the urge to "tidy up" the grid — what looks cluttered to you is a stable map to the user.

Is a motor-planning system right for everyone?

Motor-planning systems shine for many users, especially those who benefit from consistency and automaticity. Others do well with visually organized or category-based layouts. As with every AAC decision, an SLP who knows the person can help weigh the options — and trialing more than one approach is worthwhile.

Have a motor-planning system and not sure how to add a name or a new word safely? Ask the chat and it will walk you through it for your specific app.