http://www.newsweek.com/brain-muscle-really-223348

A study by the nurture shock authors asking the question just how malleable IQ really is. Answer - a lot. Predictably, with the caveat, if you were working with underprivileged, presumably under stimulated kids in the first place.

And that is what I'd like to ask Carole Dweck about: how damaging is it for a kid to realize that effort alone doesn't cut it either....
http://www.newsweek.com/downside-always-telling-kids-work-harder-223366