Scientist hypothesizes that Ashkenazi Jews are more intelligent as a group because of natural selection. "Put these two things together--a correlation of intelligence and success, and a correlation of success and fecundity--and you have circumstances that favour the spread of genes that enhance intelligence."
The Flynn Effect: IQs are rising in the US. "US test takers gained 17 IQ points between 1947 and 2001."
Howard Gardner's Theory of Multiple Intelligences. You can be smarter than your friends in nine different ways.

