This week, Rachel interviews Heidi Rabe, an SLP who specializes in supporting AAC users with complex bodies who use switches and scanning to communicate! Heidi shares a wealth of information about scanning and switches, including how to evaluate if a student needs a switch, working with PT/OT to find the right switch spot, using partner-assisted scanning, and more!

Before the interview, Chris and Rachel discuss a question from a listener about a student who is “adding random words” (and how the least dangerous assumption is that it’s purposeful and meaningful, and we should get to the bottom of it)!

Key ideas this week:

🔑 When Heidi is considering scanning and switches for a client, she thinks about whether they can reliably select from the size array that they need in order to communicate. Also, are their motor skills reliable? Are they having difficulty selecting symbols, even with a keyguard or touch guide?

🔑 Partner-Assisted Scanning is a scanning strategy where a partner verbally offers choices at a consistent rate, and the AAC user indicates what word they want. PAS allows for scanning without the time constraints that exist when presenting choices on a speech-generating device. There is usually a book that tells the partner what choices to say, and in what order. That way, the partners are consistent every time, which allows the AAC user to anticipate what words are coming. See a video on it here.

🔑 When you are using auditory scanning on a speech-generating device, you want the preview voice to be very different from the speaker voice. Otherwise, communication partners get confused and respond to the wrong voice. Also, ideally you also want the preview voice to be quieter, and to be transmitted through a personal speaker.

🔑 When doing Partner-Assisted Scanning, Heidi gives the option of “None of those” as the last option. Similarly, after they make a selection, you can offer “I have more to say” “That’s all I have to say” and “Oops, that was a mistake” as choices.

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