‘Belonging Is Stronger Than Facts’: The Age of Misinformation

“When you post things, you’re highly aware of the feedback that you get, the social feedback in terms of likes and shares,” Dr. Brady said. So when misinformation appeals to social impulses more than the truth does, it gets more attention online, which means people feel rewarded and encouraged for spreading it.

“Depending on the platform, especially, humans are very sensitive to social reward,” he said. Research demonstrates that people who get positive feedback for posting inflammatory or false statements become much more likely to do so again in the future. “You are affected by that.”

In 2016, the media scholars Jieun Shin and Kjerstin Thorson analyzed a data set of 300 million tweets from the 2012 election. Twitter users, they found, “selectively share fact-checking messages that cheerlead their own candidate and denigrate the opposing party’s candidate.” And when users encountered a fact-check that revealed their candidate had gotten something wrong, their response wasn’t to get mad at the politician for lying. It was to attack the fact checkers.

“We have found that Twitter users tend to retweet to show approval, argue, gain attention and entertain,” researcher Jon-Patrick Allem wrote last year, summarizing a study he had co-authored. “Truthfulness of a post or accuracy of a claim was not an identified motivation for retweeting.”

In another study, published last month in Nature, a team of psychologists tracked thousands of users interacting with false information. Republican test subjects who were shown a false headline about migrants trying to enter the United States (“Over 500 ‘Migrant Caravaners’ Arrested With Suicide Vests”) mostly identified it as false; only 16 percent called it accurate. But if the experimenters instead asked the subjects to decide whether to share the headline, 51 percent said they would.

“Most people do not want to spread misinformation,” the study’s authors wrote. “But the social media context focuses their attention on factors other than truth and accuracy.”

In a highly polarized society like today’s United States — or, for that matter, India or parts of Europe — those incentives pull heavily toward ingroup solidarity and outgroup derogation. They do not much favor consensus reality or abstract ideals of accuracy.

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