"He said the results are also consistent with the huge literature on the so-called Flynn effect showing that IQs are modifiable across as well as within generat

"He said the results are also consistent with the huge literature on the so-called Flynn effect showing that IQs are modifiable across as well as within generations and have been rising since the beginning of the 20th century." Flynn recently performed a new study and found that the effect might no longer be occurring in some populations. "In the United Kingdom, a study by Flynn (2009) found that tests carried out in 1980 and again in 2008 show that the IQ score of an average 14-year-old dropped by more than two points over the period. For the upper half of the results the performance was even worse." http://en.wikipedia.org/wiki/Flynn_effect#Possible_end_of_progression http://en.wikipedia.org/wiki/Flynn_effect#Possible_end_of_pr...