It's well known that IQ correlates strongly with academic and other success. Unfortunately IQ doesn't seem to be especially malleable. Some intriguing results suggest that certain other traits, possibly with just as strong a correlation, might be more amenable to development. Such, at any rate, is the claim made in this article . Something else mattered just as much, and sometimes more, to kids’ life chances. This other dark matter had more to do with attitude than the ability to solve a calculus problem. In one study of U.S. eighth graders, for example, the best predictor of academic performance was not the children’s IQ scores—but their self-discipline. OK, the author has already managed to annoy the heck out of me by implying that solving calculus problems (a)was not a strong indicator of self-discipline and (b)highly correlated with academic success. But let me just guess that these errors were due either to her lacking (a) the IQ to appreciate her error or (b)the self...