Can someone explain how dyslexia showed up in humans? Was it something that developed when we created written languages? If it existed before written languages how would one know if they had it?

Question

Can someone explain how dyslexia showed up in humans? Was it something that developed when we created written languages? If it existed before written languages how would one know if they had it?

In: 55

Answer 1

Well, the whole definition of dyslexia is, as far as I know, that you can’t read words properly, so before there was a written language even if someone had it they’d never know. Since the affliction was only discovered in 1881 it’s impossible to say how long it existed before that date, though, because no-one would have recorded it as a specific problem.