Augmentative & Alternative Communication (AAC)

What is Augmentative and Alternative Communication?

Augmentative and Alternative Communication (AAC) includes tools and strategies that help children communicate when speech is limited or unclear.

AAC can be:

  • Low-tech: picture boards, sign language
  • High-tech: speech-generating devices or apps

When should AAC be considered? 

  • Delayed Speech: No words by 18–24 months or limited communication milestones.
  • Diagnosed Conditions: Autism, cerebral palsy, Down syndrome, apraxia, etc.
  • Loss of Speech: Temporary or progressive (e.g., injury, surgery, ALS).
  • Communication Frustration: Difficulty expressing needs, leading to distress or withdrawal or significant behavioral over reactions.

How does Speech Therapy Help with AAC? 

  • Support ongoing use and adjust as needed.
  • Assess communication needs and abilities.
  • Recommend the right AAC tools (low- or high-tech).
  • Train users, families, and caregivers.