Considerations for the Composition of Visual Scene Displays: Potential Contributions of Information from Visual and Cognitive Sciences

Abstract

Aided augmentative and alternative (AAC) interventions have been demonstrated to facilitate a variety of communication outcomes in persons with intellectual disabilities. Most aided AAC systems rely on a visual modality. When the medium for communication is visual, it seems likely that the effectiveness of intervention depends in part on the effectiveness and efficiency with which the information presented in the display can be perceived, identified, and extracted by communicators and their partners. Understanding of visual-cognitive processing – that is, how a user attends, perceives, and makes sense of the visual information on the display – therefore seems critical to designing effective aided AAC interventions. In this Forum Note, we discuss characteristics of one particular type of aided AAC display, that is, Visual Scene Displays (VSDs) as they may relate to user visual and cognitive processing. We consider three specific ways in which bodies of knowledge drawn from the visual cognitive sciences may be relevant to the composition of VSDs, with the understanding the direct research with children with complex communication needs is necessary to verify or refute our speculations.

Keywords::

• Aided AAC
• Visual scene displays
• Visual and cognitive sciences

Acknowledgments

This research was supported in part through two grants: (1) the Communication Enhancement Rehabilitation Engineering Research Center (AAC_RERC), a virtual research center that is funded by the National Institute on Disability and Rehabilitation Research (NIDRR) under grant H133E030018, and (2) grant #P01 HD25995 from the National Institute of Child Health and Human Development (NICHD). The opinions contained in this publication are those of the grantees and do not necessarily reflect those of the granting agencies.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.