brake pad wear

Searched the archives, couldn't find any answer - do the brake pads wear faster if you brake harder for short periods of time, or if you brake softly over longer distances? I.e., to stop from say 30 mph to zero, you could do it either over a short distance by braking harder, or braking gradually over a longer distance. In one case, the pads are rubbing against the rotors longer, but with a lower pressure. In the other case, the pads rub for a shorter time, but with more force.

I am keen to know what implications pure braking habits have on brake pad wear - of course, driving habits affect it as well, like speeding up more, etc etc.

thanks.