Abstract

Augmentative and Alternative Communication (AAC) computer-based systems are used by individuals with severe disabilities who cannot speak. AAC technology is designed with the goal to optimize communication and improve quality of life. This paper presents principles of design based on evidence-based practice (EBP) and language activity monitoring (LAM). When applied to the research and development of AAC computer-based technology, these principles provide quantitative data for making decisions about product performance and achievable outcomes focusing on the benefit to the end-user. The evaluation of a Mandarin language software application provides an example of how the steps of EBP and LAM data were applied during the initial research tasks. The EBP model offers a unique innovation to product development by challenging computer processing designers and programmers to design systematic and scientific data collection and analysis procedures specific to EBP.

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