ABSTRACT

Purpose: The purpose of the study was to examine the applicability of VSD-based AAC systems for children with complex communication needs. Method: Empirical studies, presentation, newspaper articles and so on published until June 2016 were selected and reviewed according to vocabulary selection, layout and organization, navigation, selection techniques, and message output methods of VSD-based AAC system. Results: Analysis revealed that vocabularies were selected based on daily life activities or specific events while using pictures that well captured language concepts for communication. Direct hotspot on the referents(people, item, events, etc.) in context was set up for layout and organization. Navigation provided additional targeted vocabulary- related cues on the pictures, and direct selection techniques were employed to make the manipulation easy and intuitive. Voice output methods allowed direct recording voices considering age and sex of AAC users. Conclusion: Based on the findings, considerations and applicability of VSD-based AAC systems were discussed.

KEYWORD

visual scene display, VSD, scene-based, AAC display, CCN

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