Do you think the age at which children learn reading affects the type of learning best suited to them?
In other words, might it be the case that babies and toddlers can learn better with the whole word method than older kids can? Maybe, I wish we had studies of this. But I see some (not all) mommies here and on TeachYourBabyToRead (Yahoo group) complaining that their children are stuck with the words they've memorized. If they had learned the phonetic code through the whole word method, then they would not be limited to the words they'd memorized.
I taught my son to read as he was acquiring language because to me it made sense. Reading is language and it is almost like teaching language through another sense. Since I don't try to introduce grammatical concepts to my son in a logical order but through everyday experience I assumed the rules of phonics to be the same.
Again, I am not saying you're wrong--I don't know--but off hand, I don't know why the analogy holds. It's one thing to learn the grammar of a language; that's crucial to being able to understand the meaning of the language in the first place. It's another thing to learn phonics by induction; as many children taught the whole word way have demonstrated, it is possible to learn to read (at least, at a rudimentary level) without being able to decode new words phonetically. Besides, while getting meaning from grammatically structured language is 100% natural in the sense that our brains are "wired" for this, learning how to sound out words from their spelling is not at all natural. Writing and reading are relatively recent inventions (evolutionarily speaking) and, I assume, did not affect our evolutionary development. It is a very rare child who cannot understand spoken language after a few years. But it is not at all rare for a child who has been exposed to a lot of written language not to be able to read.
Previously I have said that I taught my son phonics, however I should correct that. When I really think about it I taught him his alphabet, not the sounds the letters make.
Simply teaching him the sounds the letters make is only the very first of many steps, by the way.
Yet he reads words I have not taught him, he doesn't appear to sound them out - at least not out loud - but there is a momentary deciphering look on his face.
I wonder if a child who is slowing down in their language acquisition would not then find it harder to decipher the phonics code by themselves?
That would be my guess (if I understand you right). In other words, a child who is generally slow in language learning would also be slower to decipher the phonics code by himself. But I think it is really a crapshoot, as they say--some slow kids pick up phonics right away, and some very bright kids don't get it except after careful explanation.