belief

You struggle to change your mind even when presented with new facts.

A 2015 study found that repeated exposure to false claims makes them seem true, even when they contradict existing knowledge.

The study was conducted by Fazio et al. and published in the Journal of Experimental Psychology: General in 2015, not 2010.

Familiarity is often mistaken for accuracy.

Where this comes from

Study: Fazio et al., 2015, Journal of Experimental Psychology
What the check found: The findings described come from a 2015 study (Fazio et al.), not a 2010 study. The illusory truth effect has been documented since the late 1970s.
Confidence: Solid, with limits

One of these every day, and every one names the study it came from. When a finding is contested, it says so.