Parents' perceptions of communication patterns and effectiveness of use of augmentative and alternative communication systems by their children with Angelman syndrome.

Purpose: The author describes communication patterns and outcomes of augmentative and alternative communication (AAC) intervention for individuals with Angelman syndrome.

Method: Parents self-administered a web-based survey using Qualtrics software. A series of rating scales and closed questions were used to gather information about individuals' current methods of communication, including AAC devices they were using. Individuals' uses of their single most advanced AAC devices were further explored in terms of associated importance, usefulness, success, acceptance, and functional outcomes.

Results: Nonsymbolic methods of communication proved to be very important to individuals, as did electronic AAC devices, although to a lesser extent. Individuals tended to have access to more than one electronic device concurrently. Although numerous devices were cited, mobile technologies, particularly iPads, were especially prevalent. This represented a significant change from a previous investigation. Overall, device use was perceived to be frequently important, accepted, successful, and useful in relation to 8 different factors, although ratings across a series of 19 functional outcomes varied. Differences were noted on several measures when individuals' ages and educational placements were considered.

Conclusion: Results suggest a changing landscape in terms of types of devices used, particularly with respect to mobile technologies, and show clear evidence that device use is often, although not uniformly, associated with positive outcomes.