rhetorical question
a question that the audience answers mentally rather than out loud
credibility
the audience's perception of whether a speaker is qualified to speak on a given topic
goodwill
the audience's perception of whether the speaker has the best interests of the audience in mind
preview statement
a statement in the introduction of a speech that identifies the main points to be discussed in the body
crescendo ending
a conclusion in which the speech builds to a zenith of power and intensity
dissolve ending
a conclusion that generates emotional appeal by fading step by step to a dramatic final statement