How to select AAC: further evidence from children with autism spectrum disorder and complex communication needs

Up to 30% of autistic children may not develop natural speech, making augmentative and alternative communication (AAC) a critical tool to support functional and symbolic communication. This study aims to evaluate proficiency and preferences for various AAC modalities among young autistic children with complex communication needs (CCN). The study explores the integration of interdisciplinary protocols and family-centered assessments to inform AAC modality selection. Eight children were assessed using multiple high- and low-tech AAC modalities. A single-case multi-element design was employed to assess modality proficiency, followed by a concurrent-operant design to measure preference. Caregivers were consulted regarding their preferences. All participants demonstrated proficiency with at least one AAC modality, and caregiver preferences generally aligned with their child's preference. Findings corroborate past research highlighting the importance of integrating objective data and participant preferences in the AAC-selection processes. A structured, interdisciplinary approach, involving both child and caregiver input, facilitates more individualized AAC interventions, improving communication outcomes. Future research should explore formalized caregiver preference assessments to enhance long-term adherence and outcomes.