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The Effect of Context Priming and Task Type on Augmentative Communication Performance
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- Author(s) / Creator(s)
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Augmentative and Alternative Communication (AAC) devices are special purpose electronic devices that generate speech output and are used by individuals who have specialized communication needs instead of voice communication. Word prediction, including context specific prediction has been proposed to help overcome barriers using these devices (e.g. slow communication rates and limited access to situation related vocabulary) but has not been tested in terms of effects during actual task performance. In this study, we compared AAC device use, task performance, and user perceptions across three tasks, in conditions where the AAC device used either was, or was not, primed with task specific vocabularies. While context priming had a significant effect on AAC device use as measured by keystroke savings, these advantages did not translate into higher level measures of rate, task performance, or user perceptions. Importantly, this indicates to AAC device designers and users that fine-grained measures of device use may not be predictive of high level performance.
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- Date created
- 2009
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- Type of Item
- Article (Published)