Autism & AAC

Speech development is affected in children diagnosed as being on the autism spectrum, which includes autism and Asperger's syndrome. Augmentative and alternative communication is the use of visual language systems to assist children with communication skills, and can help a child to learn the basics of communication before speaking. Assistive technologies can form the foundation of communication skills that may allow verbal communication at a later point.

Link: http://www.autism-help.org/communication-augmentative-alternative.htm