The study analyzed more than 2,000 tweets posted by 32 major US news outlets between January 26th and February 15th. It found that, on Twitter, news outlets amplified Trump’s misinformation more than 400 times over a three-week period — a rate of 19 times per day.

According to Media Matters, the problem stems from the way journalists are trained to write headlines — treating them as intrinsically newsworthy and only addressing if they are correct in the article. This problem isn’t limited to Trump, but in his case, it’s perhaps more apparent because roughly one in five tweets mentioning Trump was about a particular quote, and according to The Washington Post, Trump has made more than 10,000 false and misleading claims. This also highlights how difficult it can be to fit news and context into 280 characters, and it may reveal a weakness in Twitter’s ability to disseminate news.