Visual fixation patterns to AAC displays are significantly correlated with motor selection for individuals with Down syndrome or individuals on the autism spectrum.

Eye tracking research technologies are often used to study how individuals attend visually to different types of AAC displays (e.g. visual scene displays, grid displays). The assumption is that efficiency of visual search may relate to efficiency of motor selection necessary for communication via aided AAC; however, this assumption has not received direct empirical study. We examined the relation between speed of visual search and speed of motor selection of symbols. Ten individuals on the autism spectrum (AS; Study 1) and nine with Down syndrome (DS; Study 2) participated in a search task using simulated AAC displays with a main visual scene display (VSD) and a navigation bar of thumbnail VSDs. Participants were given an auditory prompt to find one of four thumbnail VSDs in the navigation bar. Eye tracking technologies measured how long it took participants to fixate visually on the thumbnail VSD, and recorded how long it took participants to select the thumbnail VSD with a finger. A statistically significant relationship emerged between visual fixation and selection latencies, confirming the positive relationship between visual processing and motor selection for both groups of participants. Eye tracking data may serve as a useful proxy measure for evaluating how display design influences selection of AAC symbols, especially when individuals are unwilling or unable to comply with traditional behaviorally-based assessment tasks.

A scoping review of AAC interventions for children and young adults with simultaneous visual and motor impairments: Clinical and research Implications.

Individuals with multiple disabilities are among the most challenging to serve and AAC teams often lack direction in determining effective interventions. The purpose of this scoping review was to summarize the research evidence on AAC interventions for individuals with complex communication needs and simultaneous motor, and visual impairments as part of their multiple disabilities; to consider implications for practice; and to determine gaps and directions for future research. A total of 27 studies were identified and reviewed, involving 55 unique participants with multiple disabilities. Most studies focused on direct intervention to increase requesting or choice-making, with little focus on social communication. Only two studies focused on training communication partners. Results indicated that AAC interventions can be highly effective to increase communication for individuals with multiple disabilities. However, there is an urgent need for increased rigor and more detailed participant information in future AAC intervention research with this population. Future research should investigate AAC intervention to improve social communication and increase language development, not just expression of needs and wants. Future research should focus on the needs of individuals with multiple disabilities from culturally and linguistically diverse backgrounds and on implementation of AAC within natural environments.

Developing Augmentative and Alternative Communication Competence in Preservice Speech-Language Pathologists: A Collaborative Model for Clinical Educators.

PURPOSE: Practicing speech-language pathologists (SLPs) reveal a perceived lack of preparedness to deliver augmentative and alternative communication (AAC) services. This is concerning because it is indicative of inadequate graduate training in AAC. The purpose of this clinical focus article was to present a collaborative model of clinical education for AAC preservice training. This clinical focus article will provide recommendations to support practicing SLPs in the provision of effective clinical instruction for preservice clinicians working with individuals with complex communication needs who require AAC. METHOD: There is an urgent need for improved training for clinical educators providing instruction in AAC. In this clinical focus article, a literature review of the existing evidence regarding best practices in clinical education and AAC training for SLPs was completed to explore current theoretical and practical approaches. The evidence was utilized to create a collaborative model of recommended clinical education in AAC. RESULTS: There is limited guidance for clinical educators when it comes to training preservice clinicians. This clinical focus article provides recommendations for AAC training of preservice SLPs by clinical educators in the field of speech-language pathology. CONCLUSIONS: The collaborative model proposed in this clinical focus article delivers a roadmap to guide practicing SLPs in the development of AAC clinical competence of preservice clinicians. Future research is needed to evaluate the effectiveness of the model.