Here's the abstract:
The aim of this study is to explore the effect of exposure to sexist humor about women on men’s self-reported rape proclivity. Earlier studies have shown that exposure to this type of humor increases rape proclivity and that funniness responses to jokes are a key element to consider. However, the role of aversiveness responses has not been studied. In a between-group design, 109 male university students are randomly exposed to sexist or nonsexist jokes. Participants are asked to rate the jokes according to their degree of funniness and aversiveness. Participants’ levels of hostile and benevolent sexism were also measured. Results about the relationship between sexist attitudes and sexist humor and the relationship between sexist attitudes and rape proclivity are consistent with those of earlier studies. However, exposure to sexist humor affects rape proclivity only when aversiveness shown to this type of humor is low. The results are discussed in the light of the prejudiced norm theory.This research supports what many of us have seen and reported emperically. What people find funny, or don't find funny, reflects on who they are beyond their sense of humor. This is important knowledge for both primary prevention and self-defense.
This research is also important in deciding the appropriate response when someone in a position of authority, such as a politician, makes a sexist joke about rape. This research shows that the problem goes deeper than the joke being offensive. These jokes raise serious issues about the joke teller's ethics. How people apologize for telling sexist jokes can be informative since many apologies only communicate regret over the response and don't communicate any understanding about why telling the sexist joke -- with or without backlash -- was a major issue.
It is good news that exposure to sexist humor doesn't seem to increase the risk of someone being willing to rape when the person exposed doesn't like this type of humor.