ATLAS OF LANGUAGE

AT-DEP6-0018 · ATLAS 260

Augmentative and alternative communication

Methods and systems that augment or replace speech, including signs, symbol boards and electronic voice output.

Part of the subject path Writing, Typography and Media

Why is this entry in the Atlas?

G · Foundational concept R2 · Necessary foundation

Augmentative and alternative communication is needed to include communicative systems that supplement or replace speech within an inclusive account of agency. Assistive technology is one resource; communicative purposes and users define the functional domain.

Colours and admission grounds

The rectangular label identifies the entry function: F – linguistic figure or procedure; A – analytical concept; G – foundational concept; E – selected concrete case. The rounded badge indicates the admission ground: R1 – distinctive contribution; R2 – necessary foundation; R3 – justified illustrative case. This editorial rationale explains the current selection rather than claiming an undocumented original selection history.

Explanation

Augmentative and alternative communication comprises strategies, signs, and aided or unaided systems that supplement or replace speech. These include embodied expression, manual signs, symbol boards, letter selection, eye-gaze access, and electronic voice output. Its starting point is not an assumed absence of thought but the conditions under which a person can reliably initiate, choose, refuse, and shape relationships. A system must be individually accessible and must be learned, offered, and respected by communication partners. AAC is therefore neither a device alone, nor therapy aimed at normalisation, nor a substitute for responsive listening. It separates communicative capacity from the ability to speak and reveals expression as a co-constructed relation among person, body, signs, environment, and technology.

Movement of thought

1. A person first has intentions, experience, and capacity for choice but cannot express them reliably through speech. 2. Appropriate embodied, graphic, or technological signs open selectable routes for contribution and response. 3. Partners allow time, model the system, and treat selection, refusal, and silence as meaningful contributions. 4. A counter-test examines autonomous use and accessibility, separating AAC from the mere presence of a device. 5. Communication returns as shared infrastructure, located neither in the body alone nor in technology alone.

Scientific use case

Communication science, special education, and speech-language research examine access, vocabulary, partner training, participation, and long-term use while prioritising users' autonomy.

Example

Using eye gaze, a person selects the symbols “pause,” “different topic,” and a name; a partner confirms each choice, and the device voices the self-composed utterance.

Counterexample

A speech-generating device remains switched off in a cupboard and nobody knows the person's vocabulary. The mere existence of equipment does not constitute AAC.

Distinction

Distinguish it from sign languages as full natural languages, communication therapy, assistive technology generally, easy language, accessibility, multimodality, and proxy speaking.

Effect on thought and perception

AAC expands self-determination, relationship, and participation, but requires suitable systems, time, and skilled partners; poorly designed provision can create new barriers.

Resonance

A gaze touches a sign, the sign a voice, and the voice another person; meaning arises along the path they keep open together.

Cite this entry

Reich, Michael (Hrsg./ed.): „Augmentative and alternative communication“. Atlas der Sprache, AT-DEP6-0018. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-DEP6-0018

https://atlasoflanguage.com/concept/AT-DEP6-0018

The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.

Historical background

ISAAC’s institutional account dates the international society for Augmentative and Alternative Communication to 1983 and its journal to 1985. The German-speaking association records its formation as an ISAAC chapter in 1990 under Unterstützte Kommunikation. Both labels thus have documented institutional settings. These dates concern organization and professional exchange, rather than the invention of supplementary or alternative communication methods.

How conceptual history changes the analysis

Distinguish supplementary and alternative functions through communication needs. Founding a society or journal does not establish the effectiveness of a particular aid.

References for the historical section

Historical source evidence and Atlas applications remain separate; this import does not assert new first attestations or a fresh exhaustive source verification.