For
It shows urgency and motivates performance.
Against
It creates fear, stress, and toxic environments.
Anonymous excerpts, translated where noted.
“At times, that requires yelling, confronting, challenging, pushing them (safely) beyond what they thought was possible.”
“I also have to yell to convey the intensity of the game.”
“Good coaches don't instill fear, they instill respect.”
“The player's end up hating the sport.”