Adapting the Specific Language System First approach for special education schools in Singapore: A pilot evaluation.
A ready-made AAC toolkit gets Singapore preschoolers talking in 10 weeks, matching results from slower custom builds.
01Research in Context
What this study did
Yu et al. (2026) tried a new way to give AAC to preschoolers in Singapore special-ed schools.
They used one set of symbols and devices for every child instead of making each one from scratch.
Teachers learned the system and tracked how kids talked after 10 weeks.
What they found
Kids in Year 1 got their own talkers in 10 weeks.
Their scores matched Year 2 kids who waited months for custom gear.
Teachers said all children asked for toys and snacks more often.
How this fits with other research
Klein et al. (2024) also trained special-ed teachers to use AAC. They saw the same boost in classroom talk.
Park et al. (2024) showed that short BST lessons let teachers run PECS without mistakes. Yu used the same quick-train idea.
Sivaraman et al. (2020) reviewed global ABA and warned: adapt to local culture or the plan fails. Yu’s fixed symbol set is a live example of that advice.
Why it matters
You can cut months off device wait time by starting with a shared toolkit. Train staff with brief BST, then roll out the same symbols for every new child. Check teacher logs at 10 weeks—if scores climb, keep the system. If not, tweak symbols and try again.
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02At a glance
03Original abstract
The Specific Language System First (SLSF) approach has been proposed as a resource-efficient strategy for strengthening Augmentative and Alternative Communication (AAC) service delivery in school settings (Maholtz & Olson, 2025; Peterson, 2023). This project examined the implementation of an adapted SLSF approach across three special education schools in Singapore, which involved the implementation of a standardised AAC system, dynamic assessment of AAC needs using trial kits, and provision of specialist support for AAC implementation to teachers. Class teachers of 71 Year 1 students, reported gains in students' communication skills and improved confidence in AAC implementation, by the end of the school year. Findings that Year 1 students with standardised AAC systems, showed similar gains in communication skills and similar levels of engagement with AAC, as 17 Year 2 peers with customised AAC systems and similar cognitive profiles, indicate that standardised AAC systems do not hinder the development of communication skills for students with complex communication needs. Compared to previous years where provision of personal AAC systems took a longer time, Year 1 students in the SLSF approach received their own personalised AAC system after 10 weeks of school, suggesting that the SLSF approach is useful for supporting communication and AAC implementation.
Research in developmental disabilities, 2026 · doi:10.1016/j.ridd.2026.105207