UIAAC: a method for design of graphical user interface for augmentative and alternative communication

Abstract

The world's population is aging, which is reflected in the increased proportion of older adults, both in developed and developing countries. In 2019, 1 in 11 people exceeded 65 years old; and it is projected that by 2050, this proportion will be 1 in 6 people. Among the most common problems older adults face are those linked to physical, auditory, and visual impairment and, affect, the way they communicate and interact with others. While the usual way of communication is through speech, 1.3% do not depend on verbal language, and as a result, their communication needs are not met. Therefore, it is necessary to search for other modes of communication (apart from speech), which are used to express thoughts, needs, desires, and ideas. An option is Augmentative and Alternative Communication (AAC), which presents methods and technology to help people develop or regain communication ability. Thus, this document presents a method called UIAAC, which aims to facilitate the design of graphical user interfaces for AAC systems oriented to older adults and incorporate pictograms as a means of communication. The presented method is aligned with usability standards and considerations of experts in AAC, gerontology, software quality engineers, and user-centered design. To assess the feasibility of the method, the design of a prototype interface and a case study that assesses the perception of the prototype's use is presented. The evaluation was developed from the point of view of the psychological area and the end-user (older adult)