Effectiveness of adapted vowel-based literacy instruction in minimally verbal adolescents with autism and intellectual and developmental disability.

Researchers tested a special reading program for three teenagers with autism who don't speak much. The program taught Hebrew vowel sounds using pictures and visual methods instead of requiring verbal responses. Students improved at recognizing vowel sounds and some simple syllables, but struggled with whole words. Teachers liked the approach and students stayed interested. This shows promise for teaching basic reading skills to children with autism who have communication challenges.

This study examined adapted Hebrew vowel-based literacy instruction for three minimally verbal adolescents with autism and intellectual disabilities (ages 11-16). Using a multiple baseline design, researchers taught vowel identification, consonant-vowel syllables, and related words through visual-spatial adaptations and nonverbal response options. Results demonstrated a functional relationship between the intervention and vowel identification performance (TAU-U = 0.643, p < 0.001), with two participants showing significant gains and all meeting visual analysis criteria. Improvements in consonant-vowel syllables were observed for two students, while word identification showed limited gains.

Teachers responded positively and students remained engaged, demonstrating feasibility for this underrepresented population.

Adapted vowel-based literacy instruction shows promise for minimally verbal adolescents with autism and ID. Visual-spatial adaptations and nonverbal response options appear feasible. However, limited word-level gains suggest need for additional semantic supports. Further research required to establish broader effectiveness and optimal intervention parameters.

Very small sample size (n=3) limits generalizability. Study conducted in Hebrew, which may not translate to other languages. Limited improvement at word level suggests intervention may be insufficient for functional literacy. Short intervention duration (6-8 sessions per module) may not capture long-term effectiveness.

Literacy skills enhance communication for students who use or need augmentative and alternative communication (AAC); however, many are not targeted in literacy instruction due to low educational expectations and limited evidence-based practices. This study examined the effectiveness of adapted Hebrew vowel-based literacy instruction for minimally verbal (MV) adolescents with autism and intellectual disabilities (ID), addressing a research gap in this population. Three MV adolescents with autism and ID (ages 11-16) participated in a multiple baseline design for adapted vowel instruction (module 1), following an AB design with two students for three sequential consonant-vowel (CV) modules. Each module spanned 6-8 sessions.

Five vowels (a, e, i, o, u), five CV syllable combinations per consonant module (/m/, /sh/, /l/), and 10 related words were targeted, utilizing visual-spatial adaptations and nonverbal response options. Evidence supported a functional relationship between adapted vowel instruction and students' vowel identification (TAU-U = 0.643, p < 0.001), with two participants showing significant gains and all three meeting the visual analysis criterion. Improvements were observed in CV syllables (/m/, /sh/) for two students. Word identification showed limited gains.

Adapted Hebrew vowel-based instruction supported a functional relationship in improving vowel performance among MV adolescents with autism and ID, with positive improvement in syllable (CV) identification for two students. Limited word-level gains underscore the need for further research on contextual and semantic supports beyond phonics decoding. Teachers' positive responses and sustained student engagement demonstrate the feasibility of this approach for this underrepresented population.