Good read. Thanks for posting.
This is an interesting quote:
A 2012 survey in Norway found that people who rode bicycles at higher speeds were more likely to be helmeted (as well as using other racing gear such as spandex, goggles, clip-in shoes, a superlight bicycle) and more likely to be involved in crashes. Slower bicyclists were not as accident-prone and because they perceived bicycling to be less risky, they were not as likely to wear helmets.
If I were to go somewhere without wearing spandex, clipless pedals, or a 'superlight' bike, I'd probably go without a helmet as well. But because I'd like to get to work and back home in the least amount of time possible I like to ride as fast as I can. So it's not that the helmet makes me want to take more risks by riding faster; it's the other way around--I know I'll be riding faster and therefore taking more risks, that's why I wear a helmet.