But the most important thing I've learned from this paper is not any sort of correlation coefficient. It's that there is no short cut when it comes to learning. This might seem obvious. But given the recent scandal about students cheating by getting other people to write their essays, I suspect I'm not the only one who thinks there should be a quick and sassy way to get educated without all the drudgery.
Politicians' rhetoric doesn't help. There is a mantra that gets repeated ad nauseam, that education is the answer, to social ills, whatever the question. There are campaigns to make education seem sexy: the university where I study shows its vice-chancellor cruising around in a sports car. (Why do universities advertise anyway? Couldn't that money be better spent on doing, you know, research?)
Education is not sexy. Maybe there are sneaky thrills in study but they are few and far between. By and large it is a dreary slog. The sooner you get okay and make your peace with the tedium, the better. But I suspect this message is not easy to learn for most people, especially those raised thinking everything should be boo-yah-baby whiz bang exciting.
We are continually being told modern life is about being creative and working smarter not harder. So the idea you have to sit down for eight hours and just study a textbook makes you feel like a dupe.
Creativity and business gurus are always telling us to be wild and crazy and throw out the rule book. But they don't mention that for 99 per cent of the time this is bollocks. An annoying book on how to be creative called Zing! says, "You find the magical. Others can sit at desks and study demographics." Well, actually, it is often the sitting at the desk dissecting the data that leads to the truly audacious ideas. In order to be creative you have to be very disciplined doing all the boring stuff first.
Thankfully, like most things that go in and out of fashion, rote learning may be on the way back in, just as "trendy educationists" have largely managed to get rid of it.
Emeritus Professor of Mathematics Des MacHale argued in the Sunday Times recently that remembering facts and figures leads on to true knowledge. The Spectator's Clarissa Tan, in a nostalgic piece about her own rote-learning education, contends discipline and structure must be inculcated - there is no shortcut - whereas creativity is often innate or inborn. I'm not sure I agree with her as I tend to think creativity can be cultivated - but I do know that the most exciting things don't betray the boredom that went into them.
Now, what is a regression equation, anyone? Anyone? Bueller?