Different sports and the skills needed for each sport are different. Football / Basketball... anger and rage can be used / harnessed for an advantage. Not so sure that reaction helps a baseball player - or a golfer. Personalities play into it as well... some respond to yelling - others need a pat on the back. One style does not fit all, but both styles can be successful. Think of the difference between Tom Landry / Jimmy Johnson ... Bill Parcells / Bill Bellichek ... Billy Martin / Joe Torre. I had a wrestling coach that used to slap a wrestler in the back of the head to wake them up before a match... not hard - not what anyone would consider abusive... but for me - it would be a distraction ... I told him ... flat out ... the head thing doesn't work ... then I started getting it on the ass. That didn't bother me. Just saying - everyone, every situation is different. A coach will use what works to get wins - until they keep losing.