I don't know, but I bet there is a very strong correlation between played with lego as kid : works as software developer now.

I wouldn't be willing to work out which one comes first. Does playing with lego cause you to want to build things, or do you want to build things and naturally start playing with lego.

It's the most awesome toy ever built. I've started my kids on Lego as soon as they could hold the bricks, and informed all relatives for all presents to be from the house of Lego.

It's also one of the only toys with resale value (after being played with); the ebay auctions for Lego are hard to win.