Abstract
Augmentative Alternative Communication (AAC) aids are devices that help individuals with speech impairments communicate. Currently, the design and development of AAC devices does not follow a usercentered design philosophy. This affects the quality of life of individuals who are in need of AAC devices. Individuals with the progressive disease Amyotrophic Lateral Sclerosis (ALS) are a population for which AAC is of critical importance. Due to the ALS individuals’ physical capabilities and constraints, there are challenges in involving the user population in a user-centered design process. This paper recommends the application of the methodology of persona development derived from the field of interaction design/usercentered design to solve some of the existing problems in the design of AAC devices for this population. This research demonstrates how current user-centered design methodologies can be adapted to develop personas of individuals with ALS and more generally, how user-centered design should be integrated into the design of AAC devices to enhance the quality of life of individuals with communication impairments.
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