AC can be high or low tech, and can be used with and for young children or adults. A few examples include -
- Picture cards (often used in combination with a therapeutic technique based on Applied Behavior Analysis)
- Picture boards
- Keyboards
- High-tech digital voice synthesizers
- Sign language (sometimes called "unaided AC")
It's not completely clear why some people with autism who have the intelligence and ability to communicate cannot or do not do so verbally. It's also the case that many children with autism who appear to have serious problems with speech do develop solid spoken language skills over time. As a result, some parents worry that using picture cards or other AC options could hinder speech development. The good news, however, is that just the opposite appears to be true. Researchers have found that the use of picture cards and keyboards, in combination with appropriate therapy, can actually boost use of spoken language.
Resources:
R.W. Schlosser. "Effects of augmentative and alternative communication intervention on speech production in children with autism: a systematic review." Am J Speech Lang Pathol. 2008 Aug;17(3):212-30.
JC Light et al. "Augmentative and alternative communication to support receptive and expressive communication for people with autism." J Commun Disord. 1998 Mar-Apr;31(2):153-78; quiz 179-80.
LK Koegel. "Interventions to facilitate communication in autism." J Autism Dev Disord. 2000 Oct;30(5):383-91.
