A young teacher is speaking in front of a large class. Most of what the teacher says is well thought out, instructive, and entertaining. But a few attempts at humor are inept and fall fl at. Later,...

A young teacher is speaking in front of a large class. Most of what the teacher says is well thought out, instructive, and entertaining. But a few attempts at humor are inept and fall fl at. Later, the teacher focuses on these failures and is very self-critical for not preparing more thoroughly, thereby depriving himself of the legitimate gratifi cation that should have been derived from a good and effective presentation.