Lex, this is a very interesting take on IQ.<br>I was expecting you would ask about Polgar Sisters where their dad didn't just gave theories but actually did experiments and proved that geniuses are made not born.,(reply>), If that was true, then people with Down Syndrome could perform literacy and mathematics as well as someone whose IQ Test said they were gifted or a genius. However, this is not the case. The academic achievements that people with Down Syndrome are able to attain is much lower than most of their peers. Nature AND nurture matters.