Public Release: 

Commenters exposed to prejudiced comments more likely to display prejudice themselves

Participants tended to post more prejudiced comments even when exposed to anti-prejudiced comments

International Communication Association

Washington, DC (June 25, 2015) - Comment sections on websites continue to be an environment for trolls to spew racist opinions. The impact of these hateful words shouldn't have an impact on how one views the news or others, but that may not be the case. A recent study published in the journal Human Communication Research, by researchers at the University of Canterbury, New Zealand, found exposure to prejudiced online comments can increase people's own prejudice, and increase the likelihood that they leave prejudiced comments themselves.

Mark Hsueh, Kumar Yogeeswaran, and Sanna Malinen (Canterbury University) published their findings in Human Communication Research. The researchers surveyed 137 adults (aged 18-50) they brought in under the guise of a different experiment. The participants were then asked to read an online article that described a proposal being considered by the education commission. The proposal was to increase the number of small scholarships to support international students, specifically targeting students from East Asia. However, due to recent claims that some Asian students were caught cheating in their studies, the proposal's future was uncertain.

After reading the article, participants were invited to offer their own feedback to the proposed policy. However, in order to post their own comments, they needed to scroll past what they believed were other people's comments. The researchers randomly exposed participants to either a dozen fairly prejudiced comments about Asian students or a dozen anti-prejudiced comments defending Asian students and cautioning against generalizing negative feelings toward all Asians. These comments were taken directly from actual comments posted in response to the news stories described earlier. Participants then posted their own comments.

Participants then completed a reaction-time task that measures people's implicit or unconscious feelings toward Asians as a group. They also completed some questionnaires measuring more conscious or explicit negative feelings toward Asians as a group. The data found that people who were exposed to prejudiced comments posted by other users showed an increase in their own levels of prejudice toward Asians by both reaction-time tools and in their written questionnaire responses. These individuals also tended to post more prejudiced comments about Asians themselves relative to when they had been exposed to anti-prejudiced comments.

"In such an era, it is important to understand how other people's online comments can influence our own feelings and behavior toward others. Although it is unclear how long lasting such effects may be, it appears that other people's bigoted comments can influence even our more implicit unconscious prejudice toward a group," said Yogeeswaran. "However, on the flip side, anti-prejudiced comments can have a more beneficial impact in reducing racial bias. These findings suggest that a prejudiced and anti-prejudiced online environment can both be influential in changing an individuals' own level of bias. Our research offers insight into some of the pros and cons of the participatory Internet and shed light on how our online comments can carry over to influence others."


"Leave Your Comment Below": Can Biased Online Comments Influence Our Own Prejudicial Attitudes and Behaviors?" by Mark Hsueh, Kumar Yogeeswaran, & Sanna Malinen; Human Communication Research, doi:10.1111/hcre.12059.

Contact: To schedule an interview with the author or a copy of the research, please contact John Paul Gutierrez,

About ICA

The International Communication Association is an academic association for scholars interested in the study, teaching, and application of all aspects of human and mediated communication. With more than 4,300 members in 80 countries, ICA includes 28 Divisions and Interest Groups and publishes the Communication Yearbook and five major, peer-reviewed journals: Journal of Communication, Communication Theory, Human Communication Research, Communication, Culture & Critique, and the Journal of Computer-Mediated Communication. For more information, visit

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