Augmentative and Alternative Communication最新文献

The selection of high-tech AAC for children diagnosed with autism spectrum disorder can be a challenging process due to the vast array of options available. One of the decisions that clinicians need to make involves how vocabulary will be organized on the display. This study aimed to compare a visual scene display (VSD) with a grid display using a multiple-probe design across participants with an embedded adapted alternating treatment design. Four young children with autism spectrum disorder who were beginning communicators were recruited and taught to request preferred items using two display formats: VSD and grid layout on a mainstream tablet with an AAC app. Two of the participants achieved criterion with both displays, the other two participants failed to achieve criterion in either display. For all participants, progress was similar in both displays. The results are discussed through the lens of each participant's characteristics with suggestions for clinical decision-making.

Appropriate vocabulary selection for augmentative and alternative communication (AAC) intervention is crucial to support communication and language development in children with intellectual and developmental disabilities (IDD). Core vocabulary lists are commonly used to guide this process, and there is a need for language-specific consideration. This paper aimed to develop a wordlist for selecting the core vocabulary for AAC intervention for young Hebrew-speaking children with IDD. Five children (age 3;5-8;4) were audio-recorded in naturalistic interactions with an interviewer and family members. Using Levy's clinical corpus in the Child Language Data Exchange System (CHILDES) and Child Phonology Analyzer (CPA) tools and preestablished codes, wordlists with usage frequencies were extracted and coded for lexeme, lexical categories and functions or content. The percentages of the 20, 50, 100, and 200 most frequent lexemes were calculated for each child and for the five children combined. The top 200 most frequently used lexemes constituted 85% of the composite lexicon. A comparison was made between this study list and a previous list derived from language samples of typically developing (TD). Lexemes representing function words dominated, albeit with a slight preference for content words in children with IDD. Among the content words, children with IDD used more adverbs, while children with TD used more verbs. Implications for AAC core vocabulary are discussed.

The purpose of this study was to investigate the perceived symbol referent relationship for selected symbols in typical adults for two different symbol sets: Indian Picture Symbols for Communication (IPSC) and Picture Communication Symbols (PCS) to identify cultural influences on symbol recognition. A total of 240 typical adults, including 120 nonprofessionals, and 120 health professionals, from Kerala, a southern state in India, participated in the study. A guessability task involving IPSC and PCS symbols for 30 target referents was utilized. Guessability scores for each participant as well as each symbol stimuli across two symbol sets were determined. The guessability scores for IPSC were significantly (p <.001) higher than PCS. For both symbol sets, nouns were the most accurately guessed, followed by verbs, adjectives, and prepositions. The results also revealed that prompting and previous exposure to symbols tend to influence the transparency of symbols. Error analyses revealed that visual and conceptual cues within a symbol tend to influence guessability. The results indicate that cultural and linguistic factors play a role in symbol guessability. The study highlights the importance of investigating the iconicity of IPSC and PCS symbols across different populations within India, before using symbols for educational/clinical purposes.

Since effective and successful AAC service delivery relies on the knowledge and competence of professionals in the field of AAC, sufficient training in AAC will equip professionals to provide quality AAC service delivery. However, many professionals lack training in AAC and structured opportunities for professional development are sorely needed. As there is no consensus on the amount, mode of delivery and content of AAC training, the purpose of this scoping review was to identify AAC training programs for professional development and to describe the characteristics and effects of such programs. A five-pronged search strategy was used to identify relevant studies. The certainty framework was used to appraise the quality of included studies. Charted data included general study characteristics; participant characteristics; training characteristics (i.e., training goals; instructional materials and strategies; training duration); quality appraisal; and reported effects of the training. The scoping review identified 34 studies for inclusion. The results showed the potential of AAC training programs for continuous professional development to increase professionals' skills in AAC intervention. A range of training characteristics was identified to guide the development of future training programs. Gaps in the research related to the training of AAC professionals were also identified to guide future research.

This qualitative study aimed to describe speech-language pathologists' (SLPs') perspectives on augmentative and alternative communication (AAC) use for people with post-stroke aphasia focusing on: (a) current AAC practice, (b) factors that influence the use of AAC, and (c) the success and relevance of AAC interventions. Semi-structured interviews took place with ten South African SLPs with experience in aphasia intervention. The transcribed interviews were thematically analyzed using a six-phase process of inductive and deductive analysis within a phenomenological framework. All the participants use AAC with their clients, employing a variety of approaches that reflect their diverse settings, experiences, and perspectives on AAC. AAC use is complex, and SLPs make conscious choices considering multiple factors. Barriers to use were often associated with limited resources in the low- and middle-income country (LMIC) context, but most participants retained a positive view of AAC, actively working to circumvent barriers to use. Participants consistently emphasized the vital role of partners in communication interactions, linked to the importance of defining AAC broadly. It is necessary to advance the integration of AAC into rehabilitation plans to improve communication and social participation outcomes for people with post-stroke aphasia, especially in LMICs such as South Africa.

This exploratory interpretative qualitative study aimed to investigate environmental factors influencing "in the moment" decisions about use of graphic symbols or spelling in face-to-face communicative interactions, by adolescents who use communication aids and are learning how to spell. The participants were six adolescents (who used speech generating devices) and their mothers. Data collection consisted of seven to eight communicative interactions between adolescents and their mothers and follow up interviews with the participants. Each dyad took part in three Zoom sessions. Researchers identified the communication mode shifts between graphic symbols and spelling during interactions and subsequently discussed with participants the reasons for these shifts. The interview data were analyzed using Charmaz's constructivist grounded theory approach to coding. The analysis revealed three themes explaining environmental factors relevant to choosing spelling or graphic symbols in communicative interactions, which were: (a) features of the communication aid; (b) communication partner's skills and their knowledge of the shared experience; and (c) opportunities to practice and use spelling. The findings provide insights into the importance of providing opportunities to practice and use spelling, communication partner's skills and knowledge of shared experience and communication aid technology design which can help to facilitate spelling during communicative interactions.

This pilot study examines the effectiveness of an adapted literacy intervention focused on the acquisition of seven letter-sound correspondences (LSC) with a child with cerebral palsy who uses high-tech eye-gaze to communicate. A single case multiple probes across letter-sounds design was used. The independent variable was explicit instruction with materials that were adapted on the participant's AAC device. Instruction was provided by a trained graduate student. The dependent variable was the child's accuracy in identifying the correct letter from a high-tech eye-gaze grid of four letters, when provided with the letter-sound by the graduate student. Results indicated that the implementation of the literacy instruction by the graduate clinician was effective in teaching seven LSCs to the child with cerebral palsy who uses high-tech eye-gaze to communicate and participate in instruction. The participant demonstrated gains for all targeted LSCs and positive trends continued after the intervention was introduced through replications of each new LSC. Average gain scores ranged from +60% to +90%. Calculation of IRD was 1.0 across all LSCs, indicative of a very large effect. The student's gains in this pilot study indicate the promise of adapted literacy instruction for individuals with severe speech and motor impairments, who use alternative access to participate in literacy instruction. More literacy research is needed for learners who use AAC and alternative access methods.

Children on the autism spectrum¹ with minimal speech are generally provided with augmentative and alternative communication (AAC) systems that represent vocabulary using picture symbols (i.e., color line drawings). However, there has been minimal research investigating the comparative effectiveness of picture symbols vs. other types of symbol representation (e.g., text) in supporting the communication of children on the autism spectrum. Using a single case adapted alternating treatments experimental design, the current study compared learning of picture symbol and text representations, measured by the accurate identification and functional use of novel AAC symbols by young children on the autism spectrum with minimal speech. Two participants demonstrated notable acquisition of both picture symbols and text. The remaining four children had difficulty demonstrating learning of either symbol representation type. These results suggest that different symbol representations (e.g., digital photographs), layouts (e.g., visual scene displays), and/or instructional procedures (e.g., more naturalistic methods) may have been a better fit for these four participants. Additionally, variability in performance across participants underscores the critical importance of personalization of AAC systems - including symbol representation - based on comprehensive assessment of individual strengths and needs.

The current scoping review aims to map the existing research on aided augmentative and alternative communication (AAC) interventions in India, identify the gaps in the existing literature, and guide future research priorities. A comprehensive search between 1992 and 2022 yielded 39 studies that met the inclusion criteria. Studies were summarized in terms of publication details, treatment settings and geographical distribution, participant characteristics, study purpose, research design, dependent variables, outcome measures, independent variables, study findings, and quality appraisal. A relatively large proportion of studies originated from the southern part of India. A considerable increase was noted in the number of intervention studies published over the last decade. Most of the intervention studies followed a quasi-experimental or a case study design and focused on investigating the effect of training on an AAC system on the performance of individuals with communication disorders. Largely, all studies reported positive effects of AAC intervention; however, based on the quality appraisal, only a handful of studies adhered to high standards. Hence, to elevate the quality of AAC intervention research in India, it is imperative to employ robust methodologies in future studies.