Originally Posted by puffin
But if IQ is normed against the age population surely a general increase due to schooling would be compensated for?
That is one of the puzzling things for me. Also, they talk about "erosion" of IQ at college age. What really brings that about? Do you lose it if you don't use it? Is that what that is about?

Irena, on the same vein, my 4 year old took an IQ test and came out and asked me what a candybar was. We are a sugar free family and I do not feed my child any sugary food. So, he had not eaten a single piece of candy until age 4. I was taken aback that he would stumble on such a question because of our lifestyle choices. So, I took him to a store that day and bought him a candybar and told him to try it. Though he is not a great fan of it, he knows what a candybar is now.