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. Author manuscript; available in PMC: 2009 May 1.
Published in final edited form as: Semin Speech Lang. 2008 May;29(2):83–91. doi: 10.1055/s-2008-1080754

Table 3.

Categories of AAC systems used in evaluation and therapy. Note that systems are not mutually exclusive. Data were available for 38 of 38 children.

AAC system/strategy Examples N %
(of 38)
Manual signs

  • Pidgin signed English

  • Signing Exact English

 6 15.8%
Computer-based communication software/hardware

  • Intellikeys

  • Speaking Dynamically Pro

  • Mercury

 12 31.6%
High tech dedicated AAC devices

  • Vantage

  • Dynamyte

  • Dynavox

 15 39.5%
Low tech communication boards, books, and symbols

  • Digital photos

  • Communication book

  • Picture Communication Symbols

 30 78.9%
Simple digitized devices

  • Step-by-step

  • Big Mac

  • Go Talk

 32 84.2%