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In the run-up to the 2016 U.S. presidential election, an unusual experiment suggested that it might be possible to influence American voters to adopt less polarized positions.

Posing as political researchers, a research team from 麻豆AV and Lund Universities approached 136 voters at the first Donald Trump and Hilary Clinton presidential debate in New York. Participants were asked to compare Trump and Clinton on various leadership traits (such as courage, vision, and analytic skills) by putting an X on a sliding scale.

Using a simple magic trick, the researchers then covertly manipulated the results (by substituting one completed survey sheet for another) so that most of the survey answers appeared moderate, closer to the midpoint between Trump and Clinton. They then presented these more moderate responses to the participants as being their own answers.

Willingness to accept and explain more moderate opinions

Surprisingly, 94 % of the respondents accepted the manipulated responses as being their own answers and readily justified the moderate views. For example, one participant who initially heavily favoured Trump claimed, 鈥淚 guess I fall somewhere in the middle 鈥� I鈥檇 like to think I鈥檓 a little moderate. I think at this point it鈥檚 important to be open-minded鈥� 鈥� even though they had reported more polarized views moments earlier.

The researchers then replicated this study online with nearly 500 participants and found no difference in the results between Clinton and Trump supporters. The majority of the participants were again susceptible to the manipulation and rationalized their ostensibly moderate responses. Afterwards, to ensure that it did not affect the participants鈥� attitudes in the longer term, the researchers debriefed them and explained the manipulation.

鈥淧olitical surveys try to capture the attitudes of the public, but our study demonstrates that these can be heavily manipulated,鈥� said Jay Olson, co-author on the research paper that was published today in . 鈥淏y making people believe that they wrote down different responses moments earlier, we were able to make them endorse and express less polarized political views. These results offer hope in a divided political climate: even polarized people can become 鈥� at least momentarily 鈥� open to opposing views.鈥�

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To read: 鈥�Depolarizing American voters: Democrats and Republicans are equally susceptible to false attitude feedback鈥� by Thomas Strandberg et al in

DOI: 10.1371/journal.pone.0226799

About 麻豆AV

Founded in Montreal, Quebec, in 1821, 麻豆AV is Canada鈥檚 top ranked medical doctoral university. 麻豆AV is consistently ranked as one of the top universities, both nationally and internationally. It is a world-renowned institution of higher learning with research activities spanning two campuses, 11 faculties, 13 professional schools, 300 programs of study and over 40,000 students, including more than 10,200 graduate students. 麻豆AV attracts students from over 150 countries around the world, its 12,800 international students making up 31% of the student body. Over half of 麻豆AV students claim a first language other than English, including approximately 19% of our students who say French is their mother tongue.

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