________ credibility is the credibility of the speaker before he or she begins to speak. ________ credibility is the credibility produced by everything the speaker says and does during the speech. ________ credibility is the credibility of the speaker at the end of the speech.

Research suggests that differences between men and women's listening behaviors occurs

a. because women's brains are larger than men's brains. b. because women use both hemispheres of the brain and men use only the left hemisphere to process information. c. primarily because of biological differences. d. because women have a larger hypothalamus in their brain compared to men.

All of the following are ethical pitfalls that should be avoided in a public speech except:

a. lying. b. misrepresenting sources. c. considering the opposing arguments. d. knowingly making weak arguments.