I'm not sure, which is why I hedged my words rather carefully. I'm skeptical about a dyslexia gene (or genes) myself, as writing is relatively recent and ther

I'm not sure, which is why I hedged my words rather carefully. I'm skeptical about a dyslexia gene (or genes) myself, as writing is relatively recent and there have been only a few hundred years to select for it, but it's not my area of expertise. So, if you like, you can replace dyxlexia with condition A, Italian with subject B, and French with subject C.