Once again, excellent username. We should work together to find more 'Truths' on chess.com! ;)
I'm up for that, lol.
But back to the main point - the potential I refer to is the maximum ability a person could reach given nearly unlimited time and practice. You're refering to the simple limits a person places on himself / herself due to choices, rather than ability. If a person plays chess for a couple of months and then stops permanently, chances are this person has not reached their full potential in chess (i.e. this person would play much better with a few more years of practice).
Our differences relate to the hypothetical vs. reality. IQ represents an average score based on an aggregate of verbal, numerical and spatial test measurements, and as someone else has pointed out on this thread, it seems likely that the ability to mentally manipulate spatial relationships must be most important to be a good player. So while I agree there must be some correlation between IQ and chess playing capability, it is clearly not linear. We don't get an opportunity to see much mathematical performance here at chess.com (except for comments about ELO calculations, lol), but judging from some of the contributions to the forums, some very good chess players (high spatial IQ) clearly have some deficiences in the verbal department, which likely drags down their IQ scores.
People never reach their full potential in chess ---
I suggest people do reach their full potential. To say, "I could have gotten better if I'd practised more"; or, "If I'd had more time"; or whatever, is simply explaining why you've reached your full potential.
Once again, excellent username. We should work together to find more 'Truths' on chess.com! ;)
But back to the main point - the potential I refer to is the maximum ability a person could reach given nearly unlimited time and practice. You're refering to the simple limits a person places on himself / herself due to choices, rather than ability. If a person plays chess for a couple of months and then stops permanently, chances are this person has not reached their full potential in chess (i.e. this person would play much better with a few more years of practice).
As I explained before (after doing some research), the only way we could really calculate the relationship properly is to allow people to play as much as they could and then compare the results among different IQ-level groups. I'm sure there will be some correlation, but there's never an absolute answer - all individual cases are still individual! Additionally, since we can't properly perform this type of experiment, we really can't get an absolute answer. :)
Since this uses credible sources to support its argument (which you see up there), I'll repost it: http://www.chess.com/forum/view/chess-players/iq-and-chess-the-real-relationship