Carol S. Dweck: Is Math a Gift? Beliefs That Put Females at Risk.
An interesting paper linked mainly for the missus who takes an interest in these things, but also apropos some of the stuff we're encountering with our son, who's fairly ahead of the pack when it comes to maths at school. It's a fine line to walk between encouraging and helping to develop an aptitude and inculcating the idea that it won't mean squat without a lot of hard work and follow-through. Also goes back to this recent post on my main blog.