Manipulated speaker sex and "sick" jokes/no-jokes in printed speeches are evaluated by college students. "Sick" jokes generally resulted in negative evaluations of both speech and speaker; "sick" jokes may be enjoyed in certain social situations but should probably be left out of formal speeches. (PD)

Data indicate that speakers with relatively high ethos (college professors) can raise their ratings on wittiness/funniness and sense of humor--without damaging their credibility--by making fun of their professional fields, provided they do not at the same time humorously disparage the values of the audience. (PD)