Cory -
So those of you who think it is entirely or 99% about application- what would you do if you were faced with a student who worked harder than anybody else on the course, literally every waking hour, who was desperate to do well, but who simply could not understand the flaws in his own reasoning? After you have put in hour after hour of (unpaid) tutorials and they are still not getting it, what would you do? Whose fault is it? What would you tell them? To sleep less and work even harder? How far would you go on pushing the idea that application is all?
I think this is a very interesting point and an area of much potential confusion. You said above that those with the most "academically privileged backgrounds" tend to do best, and in my experience as a teacher of much younger age groups I would certainly agree with that.
However, I don't think it follows from this that those from such backgrounds must have better "innate" abilities. By far the most logical explanation, to me, is that learning works best in a certain order, with high-level specialist learning sitting on top of already-developed general abilities and attitudes. In my area of music this goes something like:
- Substantial exposure to high quality musical experience (ie, music played well in tune, in time etc.), deeply embedded in family life, formative relationships with parents etc.
- Valued and supported experience in general music-making with an emphasis on the ear (singing etc.)
- Formal instruction in reading music and playing an instrument.
The specifics would be different for other subjects but I suspect the principle is similar. Now the problem with formal education is that people go into things at a certain age and have to do what they have to do in that course. So two people might be in year 1 of a music degree, intensely studying step 3 above; but one of them had a full, generous grounding in steps 1 and 2 while the other didn't.
If the Critical Period hypothesis is correct, then this would be exacerbated because the necessary experience amassed in steps 1 and 2 would not only be missing, but could never be caught up, to the level of those who had it at the right time. I'm sure this is so in the oral aspect of foreign languages for example, where a student who took up the subject in late teens will NEVER speak as well as someone who had a parent who spoke it or lived in the country in infancy, no matter how hard they work. Nobody thinks that's because the luckier student has some "innate" superiority in their ability to speak that specific language though. They just had the right experience at the right time.
That's why I said in response to one of your posts above that the difference may not matter that much. I think when people argue for nurture over nature, what they are sometimes trying to argue is that "anyone can achieve anything if they work hard enough". Most people who have worked in education know that that's not true, but it may well be that nature and genetics is not the reason that it's not true.
And while I realise I've been wittering on a while here I'll also mention one other factor: that the brain is known to be highly adaptable and actually grows differently according to training and experience. So it may well be that when you're teaching two twenty-year-olds, one of them has genuine physical advantage in their neural processing over the other, that the other can't possibly catch up with. Again however, that doesn't mean that it was innate at birth. The organs that you're comapring have had two decades of growth already formed by completely different experiences.