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Welcome to AACknowledge, the AAC Evidence Base

This website is about communication methods and aids that can be used by people who have little or no clear speech. These methods are called Augmentative and Alternative Communication (AAC). If you're new to AAC, we suggest you use the tabs at the top to find lots of information in easy to read formats, supported by useful links and definitions to give you a bit more information.


Project Final Report Published

A series of joint dissemination events took place in April & May 2013 across the UK to launch the AAC Evidence Base Project's final report 'Shining a Light on Augmentative and Alternative Communication'; the report gives an overview of all the strands of the project. Also published is a detailed research report 'Beyond the Anecdote' by the University of Sheffield (in collaboration with Barnsley Hospital).

Find what you're looking for

If you're familiar with AAC and understand a lot of the language, you may prefer to find evidence and information using Published Evidence (top left) or topic menus (right side). You can use the tabs at the top for information grouped by type rather than topic, or the tagcloud on the left. You can also just search the site for specific words and phrases.

About the site

To find out about how this online, accessible AAC evidence base has been developed, read about the AAC Evidence Base research project.


About Communication Matters research


Communication Matters Homepage 

Find help on how to use the site


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What are people saying?

Find out on the Communication Matters AAC Forum



Copyright: This site links to publisher websites for journal articles and other publications; some of these are open access and can then be viewed in full, but most are protected by the publisher's copyright. We are, however, in the process of gaining more comprehensive journal access to selected publications in order that they will be accessible through this website. We have provided a full bibliography and acknowledged all publication sources and authors, where known. Standard copyright and intellectual property rights have been complied with in sharing such evidence on this site and you should continue to comply with these laws.

AAC Journal is the official Journal of ISAAC, the International Society for Augmentative and Alternative Communication. ISAAC and Informa (the publisher of the AAC Journal) have provided a number of articles that can be freely downloaded from:

Please note that appropriate care has been taken to ensure that all information included in this database is accurate. Content includes published work reflecting the perspectives of many different authors/editors and any opinions expressed may not reflect the opinions of Communication Matters. We would be pleased if you contact us as soon as possible if you find any information which you believe to be inaccurate or offensive. Thank you.

page updated Oct 2015

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Page last updated 18 September 2012

Copyright Notices

Unless otherwise stated, the copyright of all the material on this site is held by Communication Matters.

Accessible summaries included in the content have been produced by Manchester Metropolitan University, on behalf of Communication Matters. These summaries have been produced with our best efforts to represent the perspective of the original author(s), unless stated otherwise. Apart from previously published material, the content involves a number of reviewers and authors. Material may be provided during the test period which is only available to restricted users requiring journal subscriptions and is not available to the general public on an open access basis. You should note therefore that you are only permitted to view any material provided within this website for reviewing purposes and are not permitted to copy or download ANY material from the site for personal use or any other use.

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Liability: Your use of this Website is subject to the terms and conditions on this page and the pages linked to it. Whilst every effort will be made to ensure that the site is kept up-to-date and accurate, we cannot give any warranty that this is the case. No liability is accepted for any loss or damage arising from your use of this site; including reliance placed upon information on the site, downloading of materials from the site and accessing other Internet sites from links on this site. In the case of downloading of materials it is your responsibility to ensure that material is virus checked by up to date virus software. 


Personal Views: If this website contains a blog or forum section, this will reflect the personal views of various users and not the views of Communication Matters. Although every effort will be made to ensure that published comments and views do not contain any defamatory or discriminatory material, no warranty is given and no responsibility is accepted for any loss or damage suffered as a result of any comments published.


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December 2012

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