ABSTRACT
Aided augmentative and alternative communication (AAC) systems vary from low-technology to high-technology systems. Most low-technology AAC systems do not require batteries or electricity to operate such as objects, symbols, communication boards and books, and written words. Low-technology systems only utilize static displays while high-technology systems can use either static or dynamic displays. Digitized speech entails the use of natural speech that has been digitally recorded and stored in the speech-generating device (SGD). Given that dynamic displays are relevant to high-technology systems, contains specific information about the assessment considerations associated with dynamic displays. Van der Meer and colleagues concludes that participants with developmental disabilities demonstrated preferences when they were taught to use two different AAC systems. Therefore, assessing preferences is important when identifying and selecting an appropriate AAC system for a student with complex communication needs (CCN). Once an aided AAC system has been selected and customized for the student, it is important to conduct a trial period.
