Michael & Debi Pearl's book, To Train Up a Child, ISBN 1-892112-00-0  "'I know of one young boy that is not spanked when he throws a tantrum or disobeys.  It seems that he delights in doing what he is commanded not to do.  The more he rebels, the meaner and guiltier he gets.  For punishment he is pinched or made to sit in the corner, or sometimes put in a dark closet.  When he comes out, he is madder than ever.  He could intimidate a fire-eating dragon.

Sitting in a corner, he was heard to say, "Nobody likes me.  I'm as bad as the Devil.  I never do anything right."  This little fellow is being reared to take his place in a jail cell.  Dark corners and dark closets breed darkness in the soul.  An empty room and a pouting child incubate guilt and anger.  Only the rod and reproof bring correction."'