The desired outcome is a change in performance relative to a standard that has been set. That's all that needs to be measured. And I agree it may have other ef

The desired outcome is a change in performance relative to a standard that has been set. That's all that needs to be measured. And I agree it may have other effects, but what we're interested in is the desired result of the sergeant. And yelling may be effective, but without testing it we shouldn't advocate either way.