AAC

Augmentative and Alternative Communication (AAC)

Augmentative and Alternative Communication (AAC) refers to the methods and devices used to supplement or replace speech or writing for individuals with impairments in the production or comprehension of spoken or written language. AAC encompasses a wide range of communication methods, from simple gestures and picture boards to sophisticated electronic devices.

Overview

AAC is used by individuals who have difficulty communicating through traditional speech. This can include people with congenital conditions such as cerebral palsy, autism spectrum disorder, and Down syndrome, as well as those with acquired conditions like amyotrophic lateral sclerosis (ALS), stroke, or traumatic brain injury.

AAC can be divided into two main categories:

• Unaided AAC: This involves non-verbal communication methods that do not require external tools. Examples include gestures, body language, and sign language.

• Aided AAC: This involves the use of tools or devices. These can range from low-tech options like picture boards and communication books to high-tech solutions like speech-generating devices (SGDs) and computer-based communication systems.

Types of AAC

Unaided AAC

Unaided AAC relies on the user's body to convey messages. This includes:

• Gestures: Movements of the hands or body to express ideas or emotions.
• Sign Language: A complete, natural language that uses manual communication and body language to convey meaning.
• Facial Expressions: Using facial movements to express emotions or reactions.

Aided AAC

Aided AAC involves the use of external tools. These can be categorized as:

• Low-Tech AAC: Simple tools that do not require batteries or electricity, such as:

 * Picture Boards: Boards with images or symbols that users can point to in order to communicate.
 * Communication Books: Books containing pictures, symbols, or words that users can use to construct messages.

• High-Tech AAC: Electronic devices that produce speech or text, such as:

 * Speech-Generating Devices (SGDs): Devices that produce spoken words or phrases when activated by the user.
 * Text-to-Speech Software: Programs that convert written text into spoken words.

Benefits of AAC

AAC can significantly enhance the quality of life for individuals with communication impairments by:

• Improving Communication: Allowing individuals to express their needs, thoughts, and emotions more effectively.
• Increasing Independence: Enabling users to communicate without relying on others to interpret their needs.
• Facilitating Social Interaction: Helping users to engage in conversations and participate in social activities.

Challenges and Considerations

Implementing AAC can present challenges, such as:

• Assessment and Customization: Determining the most appropriate AAC system for an individual requires careful assessment by professionals.
• Training and Support: Users and their communication partners often need training to effectively use AAC systems.
• Access and Funding: High-tech AAC devices can be expensive, and access to funding or insurance coverage can be limited.

Also see

• Speech-Language Pathology
• Assistive Technology
• Communication Disorders
• Sign Language

Resources

Latest articles - AAC

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• Ongoing trials

Source: Data courtesy of the U.S. National Library of Medicine. Since the data might have changed, please query MeSH on AAC for any updates.

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