Local AAC assessment guidance
Local AAC assessment guidance
This page includes introductory guidance for local professionals and multidisciplinary teams (SLTs, OTs, teachers) completing AAC assessments. It includes:
- Local therapist responsibilities
- Goal of AAC
- AAC Assessment Framework
- Assessing the individual
- Assessing the environment
- Assessing access
- Where to get more information?
For further information:
- Attend our AAC assessment and implementation training
- Read RCSLT AAC Clinical Guidance .
Local therapist responsibilities
As a local Speech Therapist your responsibilities are to:
- Complete a comprehensive holistic assessment of the patient to inform your AAC recommendations (and to include in your referral if referring to us) covering the areas shown in the image below. See AAC Assessment section below.
- Assess for and provide paper based (low tech) AAC, including alternative access, e.g. partner assisted scanning or eye pointing.
- Trial powered (high tech) AAC with direct touch and explore adaptions to make this easier (styluses, touch accommodations, keyguards, gloves)
- Support patients to develop skills for using AAC, including understanding the purpose of AAC, using AAC for multiple communication functions and using alternative access methods (scanning, eye pointing, head pointing).
- Support communication partners (family and friends, staff including school, care and support staff) to build skills for supporting AAC users with their communication.
- Hold the clinical responsibility and oversee the AAC input provided to patients, including by therapy assistants, assistant practitioners, technicians, support workers and teaching/learning assistants.
Goal of AAC
The goal of AAC is autonomous communication. This does not always mean independent communication.
The long term goal is “being able to say what I want to say, to whoever I want to say it to, whenever I want to say it, however I choose to say it” (Gayle Porter – SLT and developer of PODD).
Paper based or powered AAC?
The guidance below relates to all AAC, whether unaided or aided, paper based or powered AAC (see What is AAC? | North Bristol NHS Trust).
The aim of AAC assessment is to find the best way for someone to communicate. People do not ‘graduate’ from paper based to powered AAC, neither is better and it is not a hierarchy (e.g. low to high tech).
Most AAC users who have powered AAC also have paper based AAC, and choose depending on the situation (e.g. bed, chair, floor, bathroom, community, playground, work/school/college), who they are communicating with (e.g. familiar or less familiar people), and how they are feeling (e.g. more or less fatigued).
Some people are effective communicators with their paper based AAC, but find it difficult to access or use powered AAC.
AAC assessment framework
The AAC WEST Dynamic Assessment and Implementation Framework© (see image below) was developed by SLTs and OTs at AAC WEST and has been informed by other models of AAC assessment, such as Light’s model of communicative competence (Light, 1989; Light & McNaughton, 2014) and the I-ASC Explanatory Model of AAC decision making (Murray et al., 2020).
The aim is to:
- Guide therapists’ holistic assessment to support decision making
- Guide therapists’ in the areas to consider for robust implementation and future proofing
It is not specific to Specialised AAC Service assessments. Any AAC assessment, whether by a local professional or a specialised service, should address all the areas in this framework.
Further details on assessing each area of the framework is provided in our AAC assessment and implementation training.
Assessing the individual (patient/client)
The first (green) section of the framework above outlines the key assessment areas that relate specifically to the individual:
- Speech and language: intelligibility, vocabulary, word finding difficulties, sentence length, comprehension, literacy (spelling, reading).
- Cognition: attention, executive functioning, memory, processing speed, orientation, insight, learning.
- Sensory: vision, hearing.
- Physical: fine and gross motor function, accuracy, range, control, tone, consistency, effort, fatigue, posture, seating.
- Current communication: non-verbal communication, how yes/no communicated, speech/communication strategies, AAC used, communication breakdown.
- Culture and identity: ethnicity, heritage, nationality, languages/dialect, traditions, religion/spiritual beliefs and practices, gender identity, pronouns, sexual identity.
- Roles and occupations: previous/current/desired roles – family, friend, vocation/career, volunteering, hobbies, interests, community groups.
- Psychosocial: expectation, motivation, attitude, confidence, resilience, readiness for AAC, wellbeing, preference.
Collecting information across these domains helps build a comprehensive understanding of the individual', supporting informed decision-making for feature matching, trialing, and implementing AAC.
To gather this information, therapists may:
- Adapt standard language assessments to suit individual access needs. For example:
- Positioning images/items on a comprehension assessment in the corners of a frame for eye-pointing (see Access below).
- Using partner-assisted scanning (see Access below) to enable patients to indicate their responses.
- Conduct functional observations during daily activities to gather insights into language, cognition, sensory skills, physical capabilities, current communication methods.
- Request relevant clinical documentation, such as visual assessment reports.
- Engage in discussions and observations to explore culture and identity, roles and occupations, psychosocial factors.
Visit our Resources and useful links | North Bristol NHS Trust for AAC Assessment Tools.
Assessing the environment
For AAC to be successful, the AAC user needs to be well supported, have regular opportunities to communicate, and have AAC that is appropriate for their environment.
The second (orange) section of the framework outlines the key assessment areas that relate specifically to the individual’s environment:
- Communication partners: consistency/number of communication partners, understanding of AAC, attitudes, motivation, and interaction styles.
- Communication opportunities: usual routine, range/consistency of communication partners, social circle, activities/interests, employment/education, culture/community participation. Barriers to opportunity/participation.
- Physical environment: living situation, carers, seating/positioning, places time spent (home/school/college/work/community).
- Institutional environment: attitudes, policies, funding, available equipment.
Collecting information across these domains helps build a comprehensive understanding of the patient’s environment, support informed decision-making for feature matching, and guide support and training for implementation.
This information can be gathered through discussion with the patient and their communication partners, informal observations and using AAC Assessment Tools (see Resources and useful links | North Bristol NHS Trust ).
Assessing access
Access in AAC means the way a user makes their communication system work. For a brief explanation of different AAC access methods, please see our AAC access page AAC access methods | North Bristol NHS Trust. As local therapists these are some things to think about, observe and record as part of your AAC assessment, and this information should be included when making a referral to AAC WEST. You do not necessarily need to carry out formal assessments but conduct functional observations of their physical skills during daily activities to gather insight into what is their best movement.
Direct touch access
Direct touch access is the most intuitive least demanding way of accessing a communication aid. It is important to explore and enhance this first before moving onto more demanding methods.
- What hand function do they have?
- Can they point? (extend one finger or knuckle and tuck others into their palm)
- Can they point with a fist to a larger target?
- What area can they reach (A5, A4, A3 size)?
- Can the movement be sustained and repeated?
- Can they hold a stylus to make the point more accurate or reach further?
See alphabet charts and communication board resources on Resources and useful links | North Bristol NHS Trust to support you with assessing and providing AAC.
Pointer Control
- If they have some hand function but not enough to accurately touch a screen could they control a cursor with a device?
- Mouse, track pad, joystick, roller ball
- If head movement is a reliable body movement there is an access method called head mouse which uses this movement to control the cursor on a powered communication aid. Head mice is operated with software that tracks a reflective dot, features on the face, or a device attached to glasses.
- Can they hold their head up consistently?
- Can they turn their head and move their head up and down reliably?
- Any tremor, reduced range of movement or fatigue?
Eye pointing
- Can they use the focus of their eyes to point like a pointing finger? Can they look towards or between items, objects or people to indicate they are interested in it and want to communicate about it. This eye point needs to be controlled and intentional. These skills can be used to access paper based resources:
- Eye Talk
- E-tran frame
- Eye Link
- Megabee
See paper based resources on Resources and useful links | North Bristol NHS Trust.
Partner assisted scanning
If pointing is difficult, partner assisted scanning can allow people to communicate through a very small movement for ‘yes’. A communication partner methodically points to and/or reads out options and waits for selection. These options could be the alphabet, a list of words in categories or phrases. It’s always good to include an ‘is there anything else?’ option.
- What is their best way of confirming a selection – their ‘best yes’? This can be a very small action e.g. blink, nod, eye movement, nostril flare, foot movement, verbal sound.
- Can they access the items visually (words/symbols) or with auditory presentation (read out loud) or is both beneficial?
- How many items can they process?
See partner assisted scanning resources on Resources and useful links | North Bristol NHS Trust
- Paeds/symbol PAS training coming soon
- Adult/literate PAS training coming soon
Eye gaze skill building
- Eye gaze as an access method demands a range of skills. It can be tiring to learn at first as the AAC user may not be familiar with using their eyes in this way. The skills include: screen engagement and exploration; cause and effect eye movement on screen; tracking objects on a screen; sustaining attention; head remaining still while eyes move independently; targeting static images on the screen; exploring the whole screen, maintaining gaze on a target to make a selection.
- Smartbox academy – Look to learn workbook
To see the skills needed to develop eye gaze access, watch this video: Keys to Developing Eye Gaze Skills
Switch skill building
- Using a switch demands many skills from the person using it. Skills can be developed through play and leisure activities. These are examples of ways switch skills can be practiced:
- Place switch in easy to reach position
- Use different body parts to select the switch
- Press a switch and see what it does
- Press a switch to intentionally make something happen
- Exploring with 2 switches
- Making selection at the right time
- Using 2 switches for one activity
- Exploring switch scanning, listening, waiting, selecting the right one (this could range from a single switch with a voice recording saying ‘that one/yes’ used with partner assisted scanning, to 1 or 2 switches controlling a complex communication software.)
See Developing Switching Skills on Powered AAC resources | North Bristol NHS Trust
Where to get more information?
- Attend our AAC assessment and implementation training
- RCSLT AAC Clinical Guidance including the role of SLTs in AAC.
- What could promote autonomy more than giving someone a voice? - RCOT blog post on the role of OT in AAC
- Resources and useful links | North Bristol NHS Trust
- Training for AAC professionals | North Bristol NHS Trust
- How AAC WEST work with independent professionals, suppliers and charities | North Bristol NHS Trust
- AAC SIG
- Join the RCSLT AAC WEST (South West Link Therapists) Professionals Network
- Guidance for commissioning AAC services and equipment (under Funding Criteria on AAC WEST referral | North Bristol NHS Trust)
- Barnsley Paper Based AAC Guide
- Call Scotland - Professionals Learning Modules
- AAC Scotland Modules
- IPAACKS (AAC competency framework)
- I-ASC Explanatory Model of AAC decision making