Dyslexia and Intelligence: Can Strong Abilities Hide Difficulties?
Updated: Oct 28
A child may explain a complicated idea clearly and then struggle to write a few sentences about it. Parents sometimes hear that the child is “too bright to be dyslexic”, or wonder whether strong results in one subject settle the question.
It is more useful to examine the reading and spelling difficulty directly, alongside the young person’s strengths.
Strong reasoning does not answer every literacy question
Reasoning, understanding spoken language, identifying written words and spelling are different demands. In an illustrative homework situation, a pupil might give a thoughtful spoken explanation but need help reading the instructions and checking written words. That contrast gives a teacher or assessor something to investigate; it does not establish the reason for the difficulty.
Try separating the questions. What does the learner understand about the subject? How independently can they read the material? How easily can they spell and write their answer? This is more precise than describing the whole task as either easy or hard. It also recognises knowledge that a brief written response might not show.
How does this fit the Delphi definition?
The definition considers literacy in relation to age, teaching and other attainments. The companion assessment paper recognises that a difference between intellectual ability and literacy can be informative, while making clear that the difference alone is insufficient for diagnosis.
A score gap is one piece of a wider assessment, rather than a formula that decides the outcome.
What does an uneven or “spiky” profile mean?
“Spiky profile” is an informal way of describing differences between skills. It is not a separate diagnosis or a requirement that every result must differ sharply. When looking at a report, ask which differences matter during learning and how the evidence connects with reading and spelling. A graph alone cannot provide that explanation.
For example, suppose a learner can discuss a topic well but takes a long time to read its written instructions. Ask whether the difficulty concerns unfamiliar words, pace, vocabulary, understanding, or a combination.
Do not assume that a good spoken answer proves every language skill is strong, or that slow work means all thinking is slow.
Does every dyslexic person have a special talent?
No particular talent needs to be demonstrated before a reading or spelling concern deserves attention. Look for the individual’s interests and abilities without expecting a fixed “dyslexic strength”. You can celebrate a child’s storytelling, practical work or subject knowledge because it is theirs, without treating it as proof for or against dyslexia.
A helpful conversation might be: “You have good ideas about this topic. Let’s work out which part of getting them onto the page is difficult.” This gives the young person credit for what they know while leaving room for a specific learning need. Avoid asking them to compensate for that need simply by trying harder.
Questions to ask about an assessment
Ask how the assessor will combine literacy results, relevant processing skills, learning history and information from home and education.
If a report mentions a marked difference between scores, ask what it means in everyday work and whether the wider evidence supports the conclusion. The aim is an explanation that connects the findings, rather than a collection of impressive or worrying numbers.
Family experience and the response to teaching can add important context. Neither is replaced by knowing that the child is capable in another area. Bring information about strengths and difficulties together, including the support that makes successful work possible.
Discussing your child’s profile
Mark Trewby offers £400 diagnostic assessments online across the UK for ages 11–21 and face-to-face in Bournemouth for ages 8–21. The fee includes a personalised report within seven working days and feedback. A free 15-minute introductory call can help you discuss whether assessment is appropriate.