I am positive that this statement applies to every Arabian. What you CAN do is train them about "acceptable spooking"...for example, my baby Arab was "allowed" to arch his neck, prance and make the Arab-snort for a stride or two, but that was it, and he had to maintain his gait and rhythm. I mean after the first ride under saddle, that was all we'd accept. He HATED getting yelled at, and if he spooked, shied, made to buck, sped up...he got yelled at. He only very rarely attempted any of these things. By far the easiest horse I've seen started. Under saddle, he ran into my hands if he tried to speed up, and ran into my legs if he tried to shy sideways. No big deal, I just had to be the banks for the "river." Direct the energy. Whenever he did this, I would inevitably get a big "oooooh!" from the peanut gallery, and I'd roll my eyes. They sure do look pretty mid spook :D
He is the most frighteningly intelligent horse that I have ever met. He simply does not get tired. Ever. He's very reactive, but I get the impression that he simply enjoys a good spook, the way that some people enjoy bungee jumping or roller coasters. Boredom seems to be the cue for his bad behavior.