yes my therapist has done that. not only is it a therapy tool but also a parenting tool. how it works is when someone whispers the other person has to pay attention and really listen to hear the whisperer. here where I am "whisper" is a very popular tool for management, skills training like parenting classes, domestic violence training, anger management, even job employers are catching the "whisper" by training their employees to never raise their voice when dealing with the public, to instead whisper or lower the voice so that the upset/ triggered person that they are dealing with has to calm their self down and really listen.

I sometimes see this in action at the grocery store, at my job, at the movie / Show venues... "Whisper" is the in thing now in daily life, like the term "use your inside voice" was and is the in thing.

I even use "Whisper" with my children. its amazing how fast my whispering can end a temper tantrum in the middle of the grocery isles.

my point "whisper" is used any time there is a need for those self nurturing/ calming tools we learn in therapy and every day life.