> Secondly, intelligence has nothing to do with it. Dyslexia is caused by many factors, but general intelligence really isn't one of them. I'd say that's an ov

> Secondly, intelligence has nothing to do with it. Dyslexia is caused by many factors, but general intelligence really isn't one of them. I'd say that's an overstatement and not congruent with existing research in developmental psychology. To preface it's important to distinguish between two reading skills. "Decoding" is the ability to parse the symbols into words. "Comprehension" is the ability to understand the content after its decoded. Among children aged 7-8, there's a 40% correlation between general intelligence and "decoding". With comprehension there's an astounding 62% correlation with intelligence. Those are about the highest correlations you'll see anywhere in social science. Reading skills become progressively more loaded on comprehension relative to decoding, as students progress into higher grades. Therefore you see the general phenomenon that reading ability at younger ages is only moderately correlated with intelligence, whereas for teenagers and adults its extremely correlated. [1] https://pdfs.semanticscholar.org/1da5/7f319c9f6976b6b9501be19d76b4ae66a256.pdf https://pdfs.semanticscholar.org/1da5/7f319c9f6976b6b9501be1...