With regards to the Victorian study, I read through that last week and it is not immediately clear to me from the literature that reaction time is really a reliable indicator of g. Conversely, the Flynn affect suggests that IQ has really been going up. And if you've read any of Flynn's stuff you'll find that he has quite a nice explanation here, which is that the more brilliant heuristics/words/thinking tools pioneered amongst scientists, inventors, so on are slowly filtering down into the masses generation by generation. Perhaps what this suggests is that education in a new way- introducing folks to a library of new 'thinking tools' rather than just memorization etc- might have to go hand in hand with the sort of biophysical/training ideas above. I highly recommend this video by Dennett to hear a bit more about this concept- minutes 5-14 specifically: http://www.youtube.com/watch?feature=player_embedded&v=4...