Understanding AAC Devices: How They Help Children Communicate

Communication is at the heart of how we connect with others. For many children with autism, ADHD, or developmental delays, spoken language may not come easily. That’s where AAC devices—Augmentative and Alternative Communication devices—play a powerful role.

AAC is more than just technology. It’s a system of tools, supports, and strategies that help children express their needs, thoughts, and emotions when verbal speech is limited or absent. For parents, understanding AAC can open the door to improved connection, behaviour, and learning.

 

What Does AAC Mean?

AAC stands for Augmentative and Alternative Communication. In simple terms, it includes all the ways someone can communicate without speaking aloud. Some people use AAC alongside speech, while others rely on it as their primary way to communicate.

For example, someone might use:

• Hand signs

• Picture boards

• Apps that speak out loud

• Dedicated speech-generating devices

Each of these tools helps people express themselves more clearly and confidently.

 

Why Do People Use AAC?

People may use AAC for many reasons. Some children and adults have little or no speech due to autism, developmental delay, disability, or injury. Others may struggle to speak clearly or consistently.

AAC allows them to:

• Ask for what they need

• Share thoughts and feelings

• Join in conversations

• Make choices and build independence

Instead of relying on others to guess what they want, AAC gives them a clear and reliable voice.

 

Types of AAC Devices

AAC tools fall into two main categories:

1. Unaided AAC
This includes communication methods that don’t need extra tools, like:

• Gestures

• Facial expressions

• Sign language

2. Aided AAC
This includes anything that uses an external tool. Aided AAC can be:

• Low-tech, such as picture books, key rings, or printed boards

• High-tech, such as tablet apps or electronic devices that speak

Many people use a mix of both, depending on the setting and what works best for them.

 

When Should Someone Start Using AAC?

You don’t need to wait for a formal diagnosis to begin using AAC. In fact, the earlier someone starts, the better. If a child shows signs that they want to communicate but struggle to do so with speech, AAC can help right away.

Some parents worry that using AAC might stop their child from learning to talk. However, research shows the opposite. AAC often encourages speech development by giving children a successful way to practice and explore language.

How AAC Supports Behaviour and Learning

When children struggle to express themselves, frustration can lead to meltdowns or withdrawn behaviour. AAC reduces this by giving children a clear and consistent way to communicate.

Benefits include:

• Reduced behavioural incidents
• Increased independence
• Improved engagement at school or in therapy
• Enhanced relationships with family and peers

At Freedom Therapy Services, our behaviour therapists work closely with families to incorporate AAC into everyday routines, making it both functional and fun.

 

Does Using AAC Stop a Child from Speaking?

No, AAC does not stop speech development. In fact, research shows that using AAC often enhances verbal communication. It gives children a bridge to communicate while speech develops—and for some, it becomes their primary mode of expression.

Every child is different. Some may begin speaking more once they feel less pressure and more success communicating.

You can read more on this from Autism Awareness Australia.

 

Getting Started with AAC in Australia

If you think your child may benefit from AAC, the first step is an assessment. This is typically done by:

• A speech pathologist experienced in AAC
• A team that may include psychologists or behaviour therapists

AAC devices and supports can be funded through the NDIS, particularly under “Assistive Technology” and “Capacity Building – Improved Daily Living”.

Learn more about NDIS assistive technology.

 

How We Support AAC at Freedom Therapy Services

At Freedom Therapy Services, our psychologists and behaviour therapists work alongside families and external speech pathologists to ensure AAC is embedded into everyday life.

Our approach includes:

• Collaborating with your child’s team
• Supporting parents and carers to use AAC at home
• Embedding AAC in therapy goals
• Tracking communication progress over time

We believe communication is a human right, and AAC is a pathway to inclusion, connection, and success.

Explore more about our therapy services.

 

Common Questions About AAC

Q: Can AAC be used in school or community settings?

A: Yes. AAC should be used consistently across home, school, and therapy to support generalisation and real-life communication.

Q: What if my child refuses to use their AAC device?

A: That’s okay. It’s common at first. With the right modelling, encouragement, and support, most children begin to engage with their device.

Q: Will an AAC device be customised for my child?

A: Absolutely. Each device or system is set up to reflect your child’s preferences, vocabulary, and needs.