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Social influence in televised election debates: A potential distortion of democracy

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Last updated: May 29, 2012

Brown-UK-debate

The first televised U.S. presidential debate took place in 1960, when John F. Kennedy faced off against Richard Nixon in Chicago. Since then, televised election debates have spread around the world, including to nations such as Iran and Afghanistan, even as technology has continued to improve. A new feature of some contests is the real-time display of the reactions of a small group of undecided voters to the candidates’ words. As the potential voters react positively or negatively, a line — called “the worm” because of its sinuous movements — rises and falls on viewers’ screens.

While broadcasters suggest that this new feature adds drama to debates, concerns have also been raised: Does “the worm” interfere with viewers’ ability to form independent judgments? Is the sample size too small to provide any meaningful information? How large is the potential for manipulation?

A 2011 study by Royal Holloway University of London and the University of Bristol published in PLoS ONE, “Social Influence in Televised Election Debates: A Potential Distortion of Democracy,” examines the results of an experiment performed on a random sample of 150 undecided voters the night of the final United Kingdom election debate. The participants were divided into two groups and shown the live debate featuring worms that were manipulated by the researchers. One worm favored the incumbent, Gordon Brown, while the other favored Nick Clegg. The third debate participant, David Cameron, was favored by neither worm.

The study found:

  • Nearly half the participants in the group with the Brown-biased worm (47%) said he won the debate, while 35% and 13% reported that Clegg and Cameron won, respectively. More than three-quarters of the group with the Clegg-biased worm (79%) said he won the debate, compared to 9% and 4% for Brown and Cameron, respectively. These numbers indicate that the groups chose winners “consistent with the bias of the worm that they viewed.”
  • Cameron’s perceived performance in the experiment was much lower than that for the public at large — in a survey, the majority of the U.K. population felt that he won the debate. “His poor performance here is consistent with the fact that the worm was biased against him in both groups.”
  • The proportion of participants who said that they were undecided decreased from around 33% before the debate to 10% after the debate. “Most of these undecided voters were swayed in the direction of the worm.”
  • Even when participants said that they disagreed with the reactions of the undecided voters, the “bias of the worm significantly affected viewers’ judgments.”

While a minority of participants suspected that the worm had been manipulated, when their responses are removed from the sample an “identical pattern” in the data is observed.

Photo from the Royal Holloway Eyewitness Group. Tags: campaign issue, technology.


Writer: | May 29, 2012

Citation: Davis CJ, Bowers JS, Memon A. "Social Influence in Televised Election Debates: A Potential Distortion of Democracy," PLoS ONE, 2011, Vol. 6, Issue 3. doi:10.1371/journal.pone.0018154.

Analysis assignments

Read the issue-related National Affairs article titled "Worm to Reappear for Leaders' Television Debate at National Press Club."

  1. What key insights from the study should reporters be aware of as they cover these issues?

Read the full study titled "Social Influence in Televised Election Debates: A Potential Distortion of Democracy."

  1. What are the study's key technical term(s)? Which ones need to be put into language a lay audience can understand?
  2. Do the study’s authors put the research into context and show how they are advancing the state of knowledge about the subject? If so, what did the previous research indicate?
  3. What is the study’s research method? If there are statistical results, how did the scholars arrive at them?
  4. Evaluate the study's limitations. (For example, are there weaknesses in the study's data or research design?)
  5. How could the findings be misreported or misinterpreted by a reporter? In other words, what are the difficulties in conveying the data accurately? Give an example of a faulty headline or story lead.

Newswriting and digital reporting assignments

  1. Write a lead, headline or nut graph based on the study.
  2. Spend 60 minutes exploring the issue by accessing sources of information other than the study. Write a lead (or headline or nut graph) based on the study but informed by the new information. Does the new information significantly change what one would write based on the study alone?
  3. Compose two Twitter messages of 140 characters or fewer accurately conveying the study’s findings to a general audience. Make sure to use appropriate hashtags.
  4. Choose several key quotations from the study and show how they would be set up and used in a brief blog post.
  5. Map out the structure for a 60-second video segment about the study. What combination of study findings and visual aids could be used?
  6. Find pictures and graphics that might run with a story about the study. If appropriate, also find two related videos to embed in an online posting. Be sure to evaluate the credibility and appropriateness of any materials you would aggregate and repurpose.

Class discussion questions

  1. What is the study’s most important finding?
  2. Would members of the public intuitively understand the study’s findings? If not, what would be the most effective way to relate them?
  3. What kinds of knowledgeable sources you would interview to report the study in context?
  4. How could the study be “localized” and shown to have community implications?
  5. How might the study be explained through the stories of representative individuals? What kinds of people might a reporter feature to make such a story about the study come alive?
  6. What sorts of stories might be generated out of secondary information or ideas discussed in the study?

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