sorry, i still see a problem with a coach telling an athlete that they are disappointed in their performance. it's not the coach's performance in which to be disappointed in. so, i don't care how you cut this one. the coach is a moron. most children work their *** off to get adult approval and recognition.
now, if the coach wants to tell them that they are disappointed in their work habits, work ethic, not listening to and not making corrections in a timely fashion, talking too much, slow to start conditioning and slow to finish, etc; then i would agree that that's okay. in this way, you are constructively criticizing their "process" and that he/she needs to do better. and all of this is contingent on the coach being truthful to the child and not spearing them because the coach is inept. and all of this not being done in the process is what leads to poor performance on a floor and this is what they must be told.
when Maroney messed up her "performance" on her 2nd vault, do you think it would have been appropriate for Artur or Galina to tell her that they were "disappointed" in her performance. of course not. that's all.