AAC Performance Based on Semantic Organization Schemes Using Dynamic Displays
By Hill, Katya; Spurk, Emily; Sunday, Jessica; RESNA 27th International Annual Conference 2004: Technology & Disability: Research, Design, Practice, & Policy,Publication Date: 2004
Study conducted to investigate the performance of two levels of a semantic organization scheme on augmentative and alternative communication (AAC) dynamic display systems. The display schemes utilized in the systems were either multi-level (dynamic active) or fixed-level (all symbols appear on one page). Nine people with communication difficulties participated in the study. A primary diagnosis of cerebral palsy was used to identify five participants, while three participants had a diagnosis of mental retardation. The remaining participant had a syndrome not associated with cognitive disabilities. All participants used AAC dynamic display systems manufactured by Prentke Romich Company that supported either a multi-level or fixed-level semantic organization scheme based on the Unity language application program. Six participants used a multi-level scheme on the Vanguard or Vantage, and three used a fixed-level scheme with the same devices. The participants were instructed to provide language samples representative of daily communication using their AAC systems. The built-in data-logging feature of the Vanguard and the Vantage was activated to record the language sample. The samples were analyzed using the Performance Report Tool to determine the frequency of use for the language representation methods. Individuals who used the fixed level scheme appeared to take better advantage of the immediate access to core vocabulary provided by the display scheme, while participants who used the multi-level scheme demonstrated more use of multiple key activation to access picture-producing vocabulary. The authors contend that further research is necessary to assist clinicians in making informed decisions about the outcomes of AAC dynamic display technology.
Assistive Products Discussed: VANTAGE
VANGUARD
Published by: Rehabilitation Engineering & Assistive Technology Society of North America (RESNA) (Website:http://www.resna.org)
