Understanding AAC Grid Sizes🔗

Let’s talk about the differences between small and large grid sizes when it comes to AAC use.

At first glance, smaller grid sizes seem to make sense for new AAC users. There’s fewer buttons on a page, so it feels less overwhelming.

In reality, small grid sizes can sometimes make communication more difficult. Because there are fewer spots available on each page, users often have to navigate through more pages and folders to find the vocabulary they need.

With a larger grid size, more vocabulary is available on the screen and easily accessible, reducing the amount of navigation required.

Vocabulary Growth and Grid Size🔗

Another consideration is vocabulary growth.

When a new AAC user’s vocabulary begins to expand, a small grid size may no longer provide enough space for additional icons. This often means that the grid size must be changed later to accommodate new vocabulary.

For AAC users, this change can be frustrating because many AAC systems are designed around a concept called motor planning.

What Is Motor Planning? 🔗

Motor planning is similar to muscle memory. It’s the same skill that helps you find keys on a keyboard without looking or locate a light switch in the dark.

AAC users develop the same type of automatic movement on their devices through repeated practice. Over time, they learn where words are located and can find them more efficiently.

Why Consistency Matters🔗

When button locations have to be shifted to make room for new vocabulary, the user’s established motor plan changes.

As a result, the buttons they have learned to find automatically may no longer be in the same location. This can make communication more difficult and require the user to relearn where words are located.

Benefits of Larger Grid Sizes🔗

For many AAC users, starting with a larger grid size makes sense.

A larger grid size:

• Supports a consistent motor plan as vocabulary grows.
• Makes more vocabulary immediately accessible.
• Reduces the need to navigate through multiple folders and pages.
• Provides greater access to language and communication opportunities.

Ultimately, larger grid sizes often help AAC users maintain consistency while gaining access to the vocabulary they need to communicate effectively.

Who to Ask for Help🔗

If you have questions about the grid size your AAC user is using, reach out to your user’s SLP for additional guidance and support. You can also contact our SLP Empowerment team for additional assistance.