I don't think so. I sometimes wear a helmet and once it is on my head I forget it. I am sure I don't put it on and think "Right, lets go for it". In my opinion cycle helmets are pretty useless for anything but I got caught up in the scare mongering and am trying to get myself out of it. :0)
Steve
So say some folks about ski helmets (try googling some of the discussions) but if nothing else the Schumacher case should kill off the idea of a cliff edge failure mode: ie beyond the design speed limit a bike helmet is useless