The Flynn effect has many proposed, non mutually-exlusive causes, but an actual secular increase in real brain horsepower is not among the big ones.
http://en.wikipedia.org/wiki/Everything_Bad_Is_Good_for_You
Unfortunately, the progression seem to have ended or even reversed .
Reviews cite lack of hard evidence for the claims made, and as private_messaging said, the effect is slowing in developed countries (though the impact of immigration is difficult to assess).
http://en.wikipedia.org/wiki/Everything_Bad_Is_Good_for_You
Unfortunately, the progression seem to have ended or even reversed .
Reviews cite lack of hard evidence for the claims made, and as private_messaging said, the effect is slowing in developed countries (though the impact of immigration is difficult to assess).