Study: Fake news spreads faster online than real news does.

What if the scourge of false news on the internet is not the result of Russian operatives or partisan zealots or computer-controlled bots? What if the main problem is us?

People are the principal culprits, according to a new study examining the flow of stories on Twitter. And people, the study's authors also say, prefer false news.

As a result, false news travels faster, farther and deeper through the social network than true news.

The researchers, from the Massachusetts Institute of Technology, found that those patterns applied to every subject they studied, not only politics and urban legends, but also business, science and technology.

False claims were 70 percent more likely than the truth to be shared on Twitter. True stories were rarely retweeted by more than 1,000 people, but the top 1 percent of false stories were routinely shared by 1,000 to 100,000 people. And it took true stories about six times as long as false ones to reach 1,500 people.

Software robots can accelerate the spread of false stories. But the MIT researchers, using software to identify and weed out bots, found that with or without the bots, the results were essentially the same.

"It's sort of disheartening at first to realize how much we humans are responsible," said Sinan Aral, a professor at the MIT Sloan School of Management and an author of the study. "It's not really the robots that are to blame."

The stories were classified as true or false, using information from six independent fact-checking organizations including Snopes, PolitiFact and FactCheck.org. To ensure that their analysis held up in general — not just on claims that drew the attention of fact-checking groups — the researchers enlisted students to annotate as true or false more than 13,000 other stories that circulated on Twitter. Again, a tilt toward falsehood was clear.

The way information flows online — and, occasionally, spreads rapidly like a virus — has been studied for decades. There have also been smaller studies examining how true and false news and rumors propagate across social networks. But experts in network analysis said the MIT study was larger in scale and well designed.

"The comprehensiveness is important here, spanning the entire history of Twitter," said Jon Kleinberg, a computer scientist at Cornell University. "And this study shines a spotlight on the open question of the success of false information online."

The MIT researchers pointed to factors that contribute to the appeal of false news. Applying standard text-analysis tools, they found that false claims were significantly more novel than true ones — maybe not a surprise, since falsehoods are made up.

The study's authors also explored the emotions evoked by false and true stories. The goal, said Soroush Vosoughi, a postdoctoral researcher at the MIT Media Lab and the study's lead author, was to find clues about what is "in the nature of humans that makes them like to share false news."

strong — Two stories: one true, one false/strong

The researchers provided an example of two business stories, and how much more time it took the true one to reach 200 retweets. The example also shows the judgment calls made by fact-checking organizations.

• In 2014, the fashion chain Zara introduced children's pajamas with horizontal stripes and a gold star. The company said the design was inspired by what a cowboy sheriff would wear. But Twitter users posted messages saying the pajamas resembled Nazi concentration camp uniforms. Snopes: True. Time to reach 200 retweets: 7.3 hours.

• In 2016, a website republished a portion of a satirical article about how the Chick-fil-A restaurant chain had decided to begin a "We don't like blacks either" marketing campaign to stir up controversy and boost sales. It came after the company's president did say he opposed same-sex marriage. Snopes: False. Time to 200 retweets: 4.2 hours.

strong — What can be done?/strong

For all the concern about false news, there is little certainty about its influence on people's beliefs and actions. A recent study of the browsing histories of thousands of U.S. adults in the months before the 2016 election found that false news accounted for only a small portion of the total news people consumed. "We have to be very careful about making the inference that fake news has a big impact," said Duncan Watts, a principal researcher at Microsoft Research.

Another author of the MIT study, Deb Roy, former chief media scientist at Twitter, is engaged in a project to improve the health of the information ecosystem. In fall 2016, Roy, an associate professor at the MIT Media Lab, became a founder and the chairman of Cortico, a nonprofit that is developing tools to measure public conversations online to gauge attributes such as shared attention, variety of opinion and receptivity. The idea is that improving the ability to measure such attributes would lead to better decision-making that would counteract misinformation.

Roy acknowledged the challenge in trying to not only alter individual behavior but also in enlisting the support of big internet platforms like Facebook, Google, YouTube and Twitter, and media companies.