https://phys.org/news/2018-06-fake-facebook-account-reveals-fall.html

They set up a Facebook account in the name of Leo Porter which was populated with a variety of news posts interspersed with other posts relating to Leo's day to day activities, travel and life plans.

Dr. Flintham said: "We chose a mixture of real and fake news, from the obviously mundane and implausible real news to fake news. As our participants scrolled through Leo's posts they were asked to 'think aloud' by stating their initial thoughts and judgements on the news content. Our results showed an overall weak level of confidence in their ability to detect fake news."