It's wrong to raise your voice to a coworker.
Sam's new coworker has no previous experience and is having trouble keeping up.
Sam wants his new coworker to work more efficiently.
Sam teaches his new coworker how to get more work done.
Sam screams at his coworker to work faster than he has been working.
Sam's coworker learns something and doesn't feel as discouraged.
Sam's coworker loses confidence and has trouble concentrating at work.