WHY IQ HAS STOPPED RISING

It always seemed obvious that the 20th century rise in measured IQ was due to a reduction in environmental barriers (such as minor brain damage due to poor obstetric procedures) to the realization of full genetic potential. The interesting and unresolved question has always been which were the main environmental barriers. That IQ has now largely stopped rising (in statistical terms: "approached an asymptote") confirms the defining role of genetics. Prof. Flynn has confirmed that IQ has stopped rising. He has all sorts of his usual Leftist waffle about what the implications of the asymptote are but appears not to have mentioned the genetic elephant in the bedroom. Excerpts below from "The Times":

It is a common refrain, repeated in response to every new television reality show and every bumper crop of school exam results: society is dumbing down. Scientists have long argued the opposite, pointing to the now widely accepted "Flynn effect", which shows that over the past century average IQ scores have improved across the developed world, irrespective of class or creed. Now the man who first observed this effect, the psychologist James Flynn, has made another observation: intelligence test scores have stopped rising.

Far from indicating that now we really are getting dumber, this may suggest that certain of our cognitive functions have reached - or nearly reached - the upper limits of what they will ever achieve, Professor Flynn believes. In other words, we can't get much better at the mental tasks we are good at, no matter how hard we try....

In a lecture in Cambridge yesterday, he said that the study of intelligence has for too long been asking the wrong question: "The questions are not `Are we getting smarter?' and `Are our children really smarter than we are?' If the rise in IQ scores meant that we were smarter, that would mean our grandparents were dull and our great grandparents idiots, which is clearly not the case. The question should be, `Have certain cognitive skills risen?' And the answer to that is yes."

Professor Flynn believes there is no reason to believe IQ gains will go on for ever. He points out that although gains are still robust in America, they have stopped in Scandinavia. "Perhaps their societies are more advanced than ours and their trends will become our trends," he told his audience at the Cambridge Assessment Psychometrics Centre.

More here.