Speech-Language pathologists' decisions when designing an aided AAC display for a compilation case study of a beginning communicator

Comparison of learning text vs. picture symbol AAC representations for young children on the autism spectrum

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.

QuickPic AAC: An AI-Based Application to Enable Just-in-Time Generation of Topic-Specific Displays for Persons Who Are Minimally Speaking

As artificial intelligence (AI) makes significant headway in various arenas, the field of speech-language pathology is at the precipice of experiencing a transformative shift towards automation. This study introduces QuickPic AAC, an AI-driven application designed to generate topic-specific displays from photographs in a "just-in-time" manner. Using QuickPic AAC, this study aimed to (a) determine which of two AI algorithms (NLG-AAC and GPT-3.5) results in greater specificity of vocabulary (i.e., percentage of vocabulary kept/deleted by clinician relative to vocabulary generated by QuickPic AAC; percentage of vocabulary modified); and to (b) evaluate perceived usability of QuickPic AAC among practicing speech-language pathologists. Results revealed that the GPT-3.5 algorithm consistently resulted in greater specificity of vocabulary and that speech-language pathologists expressed high user satisfaction for the QuickPic AAC application. These results support continued study of the implementation of QuickPic AAC in clinical practice and demonstrate the possibility of utilizing topic-specific displays as just-in-time supports.

Leveraging Communication Partner Speech to Automate Augmented Input for Children on the Autism Spectrum Who Are Minimally Verbal: Prototype Development and Preliminary Efficacy Investigation

PURPOSE

Augmentative and alternative communication (AAC) technology innovation is urgently needed to improve outcomes for children on the autism spectrum who are minimally verbal. One potential technology innovation is applying artificial intelligence (AI) to automate strategies such as augmented input to increase language learning opportunities while mitigating communication partner time and learning barriers. Innovation in AAC research and design methodology is also needed to empirically explore this and other applications of AI to AAC. The purpose of this report was to describe (a) the development of an AAC prototype using a design methodology new to AAC research and (b) a preliminary investigation of the efficacy of this potential new AAC capability.

METHOD

The prototype was developed using a Wizard-of-Oz prototyping approach that allows for initial exploration of a new technology capability without the time and effort required for full-scale development. The preliminary investigation with three children on the autism spectrum who were minimally verbal used an adapted alternating treatment design to compare the effects of a Wizard-of-Oz prototype that provided automated augmented input (i.e., pairing color photos with speech) to a standard topic display (i.e., a grid display with line drawings) on visual attention, linguistic participation, and (for one participant) word learning during a circle activity.

RESULTS

Preliminary investigation results were variable, but overall participants increased visual attention and linguistic participation when using the prototype.

CONCLUSIONS

Wizard-of-Oz prototyping could be a valuable approach to spur much needed innovation in AAC. Further research into efficacy, reliability, validity, and attitudes is required to more comprehensively evaluate the use of AI to automate augmented input in AAC.

The effect of aided language stimulation on the acquisition of receptive vocabulary in children with complex communication needs and severe intellectual disability: a comparison of two dosages

Aided language stimulation is an augmented input strategy that facilitates the expressive and receptive language skills of persons who require augmentative and alternative communication (AAC). The aim of this study was to determine and compare the acquisition of receptive vocabulary items during implementation of aided language stimulation with dosages of 40% and 70%, respectively. An adapted alternating treatment design was replicated across six participants with complex communication needs and severe intellectual disability. All participants demonstrated receptive vocabulary acquisition when aided language stimulation was provided with a dosage of 70%, and two participants demonstrated acquisition when a dosage of 40% was provided. Receptive vocabulary acquisition was maintained following a 6-day withdrawal period. The dosage of augmented input may impact receptive vocabulary acquisition for children with complex communication needs and severe intellectual disability, with higher dosages being more effective for some participants. The findings indicate that clinicians should be aware that dosage is an important consideration when providing aided language stimulation to facilitate receptive vocabulary acquisition in children with complex communication needs and severe intellectual disability.