Presuming Competence

Definition

Presuming competence means assuming that a person can think, understand, and learn, even when they do not speak, move, or respond in expected ways. Also called presumed competence, it starts from the belief that a nonspeaking or disabled person has a full inner life and deserves real communication tools, real learning, and to be spoken to directly.

Why It Matters

The alternative causes lasting harm. When competence is not presumed, people are given simplified education, denied meaningful communication access, excluded from decisions about their own lives, and defined by what others assume they cannot do. Those low expectations become self-fulfilling: a person never offered the tools to show ability is recorded as lacking it. Presuming competence shifts the burden of proof. Instead of a person having to prove they are capable before being treated that way, the default is respect and access, with support adjusted to real, demonstrated needs.

Common Misconception

Presuming competence is not naive optimism or pretending challenges do not exist. It does not mean denying that a person needs support; it means providing support while still assuming intelligence and understanding. It is also not a favor granted to some people. It is the same benefit of the doubt most people receive automatically, extended to those who have too often been denied it.

What Does It Mean to Presume Competence?

In practice, presuming competence looks concrete. It means speaking to a person in an age-appropriate way rather than talking over them or about them in front of them. It means offering robust communication, such as AAC, instead of assuming it is unnecessary. It means teaching real, grade-level material rather than a watered-down version, and reading a lack of response as a possible barrier to output, not proof of a barrier to understanding.

This matters most for autistic people who are nonspeaking or minimally speaking, and for anyone with significant support needs, because they are the people most often underestimated. The disabled-led collective Stimpunks puts the principle simply: never assume that the ability to speak equals intelligence.

Where Does Presuming Competence Come From?

The idea is usually traced to researcher Anne Donnellan's 1984 paper on the criterion of the least dangerous assumption. Donnellan argued that, when there is no conclusive evidence, educational decisions should rest on the assumption that would do the least harm if it turned out to be wrong.

Applied to competence, the logic is straightforward. If you presume a person understands and you are wrong, you have spoken respectfully and offered more than they needed. If you presume they do not understand and you are wrong, you have denied a thinking person education, communication, and dignity. The second mistake is far more dangerous. The phrase presume competence later spread widely through inclusive education and disability rights.

What Does the Research Show?

Research supports the concern that nonspeaking autistic people are often underestimated. In a 2015 study, Courchesne and colleagues tested 30 minimally verbal autistic children. None could complete a standard intelligence test, yet 26 completed a different reasoning test, and 17 of them scored between the 5th and 90th percentile. The authors concluded that these children may be at risk of being underestimated.

A 2024 study by Jaswal and colleagues found that 31 nonspeaking and minimally speaking autistic teens and adults showed knowledge of spelling and word boundaries, and concluded that many autistic people who do not talk can learn how to spell.

On communication, the American Speech-Language-Hearing Association lists the belief that AAC reduces motivation to speak or delays language as a misconception, and notes that AAC may help improve natural speech. Our article on why AAC does not prevent speech explains this research for families.

Presuming Competence at Home and at School

Talk to your child, not just about them. Explain what is happening and why. Offer choices. Read age-appropriate books aloud. Make communication tools available all day, not only in therapy. Include your child in conversations about their own plans and goals, and assume they are listening, because they very often are. Our guide to presuming competence in nonverbal autism has more everyday examples.

Frequently Asked Questions

What does presuming competence mean?

Presuming competence means assuming a person can think, understand, and learn, even if they do not speak or respond in expected ways. It means talking to them directly, offering real communication tools and learning, and treating them as a full participant in their own life.

Is it presuming competence or presumed competence?

Both phrases describe the same idea. Presume competence is the action, presuming competence is the practice, and presumed competence is the resulting stance. All three mean starting from the assumption that a person understands and can learn.

Where does the idea of presuming competence come from?

It is usually traced to Anne Donnellan's 1984 criterion of the least dangerous assumption: without conclusive evidence, act on the assumption that would do the least harm if wrong. Wrongly assuming someone cannot understand does far more harm than the reverse.

What does presuming competence look like in practice?

Speaking to the person directly and age-appropriately, not talking about them in front of them, offering AAC and other communication tools, teaching real material, giving time to respond, and including them in decisions about their own life.

Does presuming competence mean ignoring support needs?

No. Presuming competence and providing support go together. It means assuming intelligence and understanding while still offering whatever help a person actually needs.