Stakeholder validation of a Sepedi core vocabulary list as a resource for augmentative and alternative communication.

PURPOSE: The development of culturally and linguistically appropriate resources to support communication interventions for underserved communities is an urgent necessity. The purpose of the study was to obtain stakeholder feedback on vocabulary items from a Sepedi core vocabulary list developed as a resource for vocabulary selection for augmentative and alternative communication (AAC) systems, and to expand the list based on stakeholders' vocabulary recommendations. METHOD: A questionnaire was used to obtain the ratings of 57 stakeholders regarding the importance of including 155 Sepedi words from the Sepedi core vocabulary list on an AAC system for a child with receptive language skills at the level of a 4-year-old or higher. Stakeholders also suggested additional words to include on the system. RESULT: All words were rated as important or very important. However, there was a statistically significant inverse relationship between the average frequency of occurrence of words belonging to a specific category and the average importance rating that stakeholders assigned to words in that category. A total of 48 words were additionally suggested by three or more stakeholders. CONCLUSION: Stakeholder ratings validated the list as relevant to consult in vocabulary selection for Sepedi AAC systems for children. Stakeholder-suggested words may be a useful supplement to this list.

Designing electronic graphic symbol-based AAC systems: a scoping review. Part 1: system description.

PURPOSE: This is the first of two papers summarizing studies reporting on the design of electronic graphic symbol-based augmentative and alternative communication (AAC) systems, to determine the state of the field. The aim of this paper was to provide an overview of the general characteristics of the studies and to describe the features of the systems designed. METHODS: A scoping review was conducted. A multifaceted search resulted in the identification of 28 studies meeting the selection criteria. Data were extracted relating to four areas of interest, namely (1) the general characteristics of the studies, (2) features of the systems designed, (3) availability of the systems to the public, and (4) the design processes followed. In this paper, findings relating to the first three areas are presented. RESULTS: Most study authors were affiliated to fields of engineering and/or computer science and came from high-income countries. Most studies reported the design of AAC applications loaded onto mobile technology devices. Common system features included customizable vocabulary items, the inclusion of graphic symbols from both established AAC libraries and other sources, a dynamic grid display, and the inclusion of digital and/or synthetic speech output. Few systems were available to the public. CONCLUSIONS: Limited justifications for many of the complex design decisions were provided in the studies, possibly due to limited involvement of rehabilitation professionals during the design process. Furthermore, few studies reported on the design of graphic symbol-based AAC systems specifically for middle- and low-income contexts and also for multilingual populations.Implications for rehabilitationComplex design decisions about electronic graphic symbol-based augmentative and alternative communication (AAC) systems should be made purposefully and with sufficient justification.Increased collaboration between designers and rehabilitation professionals during the design of electronic graphic symbol-based systems could improve the products.Design of AAC systems for populations residing in low and middle-income contexts and also for multilingual populations are urgently needed.

Designing electronic graphic symbol-based AAC systems: a scoping review. Part 2: application of human-centred design.

PURPOSE: This is the second of two papers summarizing studies reporting on the design of electronic graphic symbol-based augmentative and alternative communication (AAC) systems. The aim of this paper was to describe the design approaches used and to determine to what extent the principles of human-centred design (HCD) were reflected in the design approaches and processes used. METHODS: A scoping review was conducted. A multifaceted search resulted in the identification of 28 studies meeting the selection criteria. Data were extracted relating to four areas of interest, namely, (1) the general characteristics of the studies, (2) features of the systems designed, (3) availability of the systems to the public and (4) the design processes followed. In this paper, findings related to the last area are presented. RESULTS: Design approaches were often inconsistently described. User-centred design was mentioned more often than HCD. Even so, various HCD principles were considered in most studies. Notably, stakeholders were involved in the design process in all studies. However, users were not involved in all studies and stakeholder roles were predominantly informative rather than collaborative. Prototype and product evaluations focussed mostly on usability rather than user experience. Although many design teams were multidisciplinary, engineers and computer scientists predominated. CONCLUSIONS: There is a need for designers to be more transparent about the type of design approach used to guide the system design and also to clearly report on design approaches and processes used. The application of HCD to the design of graphic symbol-based AAC systems is still limited.Implications for rehabilitationHuman-centred design approaches can productively guide the design of electronic graphic symbol-based augmentative and alternative communication (AAC) systems.Creative methods are needed to involve stakeholders with complex communication needs in all phases of the design process.Evaluation of electronic graphic symbol-based AAC systems should consider both usability and user experience.

Barriers to and facilitators of employment of persons with disabilities in low- and middle-income countries: A scoping review.

BACKGROUND: Unemployment rates for persons with disabilities in low- and middle-income countries (LMICs) are high. This is despite the call to action by the United Nations Convention on the Rights of Persons with Disabilities and Sustainable Development Goals aimed at improving the economic well-being of the marginalised. To improve the employment outcomes of persons with disabilities in these countries, factors that facilitate and hinder employment should be explored. OBJECTIVES: This study explored barriers to and facilitators of employment for persons with disabilities in LMICs through a scoping review. METHODS: A search strategy included a systematic search of nine databases using specific keywords. The International Classification of Functioning, Disability and Health (ICF) framework was used as a conceptual framework and barriers and facilitators were reported according to the domains of the ICF. Articles published between 2008 and 2020 were reviewed using a predefined criteria. RESULTS: Thirty-two studies were identified in the review. Factors were identified in all domains of the ICF: (1) body function and body structure (12; 39%); (2) activities and participation (13; 42%); (3) personal factors (23; 74%); (4) environmental factors (27; 84%). CONCLUSION: Factors that hinder and facilitate the participation of persons with disabilities in LMICs were mainly found in the environment, with personal factors also influencing participation. The presence of negative attitudes and lack of services mainly in health and transport were major factors within the environment whilst personals factors included the lack of educational qualifications and skills. These results indicate the importance of consideration of contextual factors when developing intervention strategies aimed at facilitating the employment of persons with disabilities in LMICs.

Determining the core vocabulary used by Sepedi-speaking children during regular preschool activities.

PURPOSE: In order to provide equitable communication intervention and support services to clients from diverse cultural and linguistic backgrounds, the development of language-specific resources for assessment and intervention is needed. The purpose of the study was to develop a core vocabulary list based on language samples from Sepedi-speaking children, in order to make it available as a resource to inform vocabulary selection for augmentative and alternative communication (AAC) systems for children in need of AAC from a Sepedi language background. METHOD: The speech of six typically developing Sepedi-speaking children aged 5-6 years was recorded using small body-worn audio recording devices. Children were recorded during their regular pre-school day. The recordings were transcribed, coded and analysed. RESULT: The composite transcript consisted of 17 579 words, of which 1023 were different words. The core vocabulary was determined by identifying all words that were used with a minimal frequency of 0.05%, and were used by at least half of the participants. The Sepedi core vocabulary consisted of 226 words that accounted for 88.1% of the composite sample. CONCLUSION: The core vocabulary determined in this study represents a small pool of reusable linguistic elements that form the grammatical framework of the Sepedi language. As such, is a valuable resource that can be used to assist with vocabulary selection for children who require AAC and who come from a Sepedi language background.