Here is an interesting web site for those interested in studies of IQ or the g-factor. I suppose IQ is not politically correct, but it does predict how well someone will do acedemically, or economically. I have always been interested in creativity as well as IQ. These seem to be separate attributes, though it appears that a certain level of IQ is necessary to support using creativity to advantage.

http://www.lagriffedulion.f2s.com/