Metrics for Comparing Three Word-Based Software Programs Used for Augmentative and Alternative Communication

Abstract

The purpose of this investigation was to conduct an analysis of a set of metrics developed for comparing features of software used in speech generating devices (SGD) for augmentative and alternative communication (AAC). These metrics – measures of speed, efficiency, and accuracy – were employed during a sentence reconstruction task. Twenty two participants without disabilities reconstructed nine sentences using each of three SGD software programs, counterbalanced to remove order effects. Results revealed differences in the metrics across the software programs that were supported by a social validation survey completed by the participants. These results provide benchmark data about relative speed, accuracy, and efficiency of these software programs in structured use, and can inform professionals in matching potential AAC users with specific features of word-based software.

Keywords:

• AAC
• Word-based Software

Notes

1 WordPower is a word-based communication software developed by Nancy Inman M.A.T, CCC-SLP. Additional information is available from www.inmaninnovations.com

2 Speaking Dynamically Pro is dynamic-screen communication software distributed by Mayer Johnson Co. Additional information is available from www.mayer-johnson.com

3 Gateway Pro series 4 is a part of the Gateway to Language and Learning software series developed by Joan Bruno, Ph.D., CCC-SLP. Additional information is available from www.gatewaytolanguageandlearning.com

4 WordCore is word based software developed for the Vantage speech generating device by Russell Cross, MRCSLT. Additional information is available at www.roughmagic.net/wordcore and www.prentrom.com

5 The Mercury is a windows based speech generating device (SGD) manufactured by Tobii Assistive Technology Inc. Additional information is available from www.assistivetech. com

6 The Vantage is a dedicated speech generating device manufactured by Prentke Romich Co. Additional information is available from www.prentrom.com

7 DV4 is a dedicated SGD formerly manufactured by DynaVox Technologies Inc. Additional information is available from www.dynavoxtech.com