I suggest you read the book "What is Intelligence?" by James Flynn himself. It's a cautious and erudite work, and the theory they float does seem to resolve qui

I suggest you read the book "What is Intelligence?" by James Flynn himself. It's a cautious and erudite work, and the theory they float does seem to resolve quite a few of the mysteries. Perhaps most importantly, the data do not bear out universal and generic intellectual ascension. They contend that the rise in IQ has been spurred on by a change in cognitive environment over the past century, and I think the existence of a shift in cognitive demands of a massive scale is something tough to deny. Here's a paper where they discuss the theory, if you can't get the book. http://www.apa.org/journals/features/rev1082346.pdf http://www.apa.org/journals/features/rev1082346.pdf