Book excerpt: The fourth edition of the foundational, widely adopted AAC textbook Augmentative and Alternative Communication is the definitive introduction to AAC processes, interventions, and technologies that help people best meet their daily communication needs. Future teachers, SLPs, OTs, PTs, and other professionals will prepare for their work in the field with critical new information on advancing literacy skills; conducting effective, culturally appropriate assessment and intervention; selecting AAC vocabulary tailored to individual needs; using new consumer technologies as affordable, nonstigmatizing communication devices; promoting social competence supporting language learning and development; providing effective support to beginning communicators; planning inclusive education services for students with complex communication needs; and improving the communication of people with specific developmental disabilities and acquired disabilities. An essential core text for tomorrow's professionals--and a key reference for in-service practitioners--this fourth edition prepares readers to support the communicative competence of children and adults with a wide range of complex needs.