Supporting Someone With an Intellectual Disability

Picture a support worker explaining a fairly significant decision, whether to move house, in about eight seconds flat and then ticking a box that says the person has been consulted. Technically true. Practically useless. The person hasn't had time to process the words, let alone weigh up what they mean for their life. Nobody means harm. It's just the default a lot of workers fall into when they've decided, often without realising it, that a person won't really get it anyway.

That default is the thing worth unlearning, and it's the heart of what good support for intellectual disability actually looks like.

What is an intellectual disability?

An intellectual disability affects general cognitive functioning, reasoning, problem-solving and learning, along with adaptive skills used in everyday life, and is typically identified in childhood. It ranges widely in how it presents. Some people need support with most daily tasks. Others live largely independently and need support with specific things, like managing money or navigating complex systems. As with every disability in this list, the label describes a category. It does not describe the specific person in front of you.

What does presuming competence mean in practice?

Presuming competence means starting from the assumption that a person understands more, and can decide more, than their diagnosis alone suggests, and giving them a genuine chance to show it before defaulting to doing things for them. It's a strengths-based idea championed by organisations like Inclusion Australia, the national voice of people with intellectual disability and their families.

In everyday terms it looks like explaining a decision properly instead of skipping the explanation because it seems easier, offering real choices instead of choosing on someone's behalf out of habit, and checking understanding by asking someone to explain something back in their own words rather than asking "do you understand," a question most people answer yes to regardless of whether they actually do.

How should communication actually change?

Plain language, shorter sentences, and one idea at a time tend to help more than simplifying to the point of sounding like you're talking to a child, which most adults with intellectual disability notice and find alienating. Visual supports, easy-read documents, and extra processing time all help without changing the substance of what's being communicated.

Pace matters as much as vocabulary. Rushing an explanation because you're on a tight roster doesn't save time if the person didn't actually take it in. It just moves the cost of that gap to later, usually as confusion, distress, or a decision made without real understanding.

How does this connect to decision-making?

The biggest practical risk in this space is sliding from supporting a decision into making it. Supported decision-making means giving someone the information, time and trusted people they need to make their own choice, including choices that carry some risk. Substituted decision-making means someone else, usually a guardian, decides for them, and under the NDIS that's meant to be a last resort, not a convenience. We've written a fuller guide on supported decision-making if you want the detail.

Where does a worker's role end?

Support workers build understanding, offer choices and communicate clearly. Formal capacity assessments, guardianship decisions and clinical judgements about a person's decision-making ability sit with qualified professionals and the legal system, not with a support worker's opinion on a given day. If you're unsure whether someone has the support they need to make a particular decision, that's an escalation, not a guess.

How CORA's course fits into this

CORA's course Understanding: Intellectual Disability, part of the Disability Understanding & Daily Life stream in the course library, covers practical communication adaptations and how to support participation, learning and decision-making in ways that build capacity over time. It builds a worker's knowledge and judgement. It does not certify competence, that assessment sits with your organisation's own processes.

To see how this fits alongside supported decision-making and the rest of the Disability Understanding stream for your team, try the Pathway Builder, free and no sign-up required, or request a demo.

Sources and further reading

• Inclusion Australia, national voice of people with intellectual disability and their families
• Council for Intellectual Disability
• Supported decision-making policy, National Disability Insurance Agency

This page is general information for support workers and providers, not legal or clinical advice. Always follow the individual's own support plan and your organisation's policies.