Augmentative and alternative communication (AAC) systems enable individuals with complex communication needs to express themselves effectively. This book explores the range of AAC strategies, from low-tech picture boards to high-tech speech-generating devices. It discusses the principles of AAC assessment, system selection, and implementation across settings. Readers learn how to tailor AAC interventions to the user’s cognitive, motor, and linguistic abilities. Emphasis is placed on fostering independence, social inclusion, and literacy development. Designed for speech-language pathologists and special educators, it bridges theory and practical application.
Zeph Callahan focuses on communication technologies and strategies for individuals with complex communication needs. His work spans both high-tech AAC device development and low-tech symbol-based communication systems. He has collaborated with software engineers and therapists to enhance accessibility and user customization. His research explores the sociolinguistic dimensions of AAC use and communicative competence. He also mentors emerging professionals in inclusive communication practices and assistive design.