criterion
A standard used to judge effectiveness (plural: criteria).
pivot (bridge)
Acknowledging a question, then moving to a prepared message.
sound bite
A short, quotable line likely to be repeated in news coverage.
call-back
Returning at the end of a talk to an image, story or phrase from the opening.
dynamics
Changes in volume and intensity in a performance.
refrain
A line or phrase repeated at intervals in a poem or song.
transparency test
Asking whether a strategy would still work if the audience knew exactly what the speaker was doing.