LOL. Getting yelled at might work for some people. I would laugh inside when the Drill Sergeants would yell and scream at us. An intelligent person knew there was no threat from them. Weak people were the ones who responded to yelling, either in a positive way or a negative way. I somehow managed to lead people in peace and war without having to yell at them in anger or for discipline. My soldiers knew that when I said something it had to get done. If I told them they might find themselves in hot water and I would recommend to the commander about UCMJ action, they knew I was serious. That seemed to work better than mindlessly yelling at someone. BTW: my soldiers had the highest GT scores and were pretty intelligent folks. Yelling at them would do squat. I also jumped out of planes for several decades now and have flown as a crewmember and pilot (civ life). I fail to see how having an instructor yelling at someone would be productive. Just my take on things. And as they say YMMV One can be stern, a great teacher without sounding like an idiot that needs to yell and abuse people. Then again, many in society might need that.