Among women increased past pornography consumption was not found to be associated with any of the sexist attitudes investigated. Among men increased past pornography consumption was initially found to be associated with more negative attitudes toward women including more hostility, negative prejudices, and stereotypes. However, when the researchers actually exposed participants to pornography, personality (agreeableness) was found to influence the relationship between pornography and sexist attitudes so that it was only among participants low in agreeableness that pornography was found to increase sexist attitudes.
Among this group it was found that laboratory exposure to pornography modestly increased hostile sexist attitudes. Further this increase was found to be brought about by increases in sexual arousal to the pornographic exposure material. For all other participants, pornography exposure was found not to influence sexist attitudes.
The paper has been published in the Journal of Communication.