memory

A repeated claim eventually feels like a known truth.

A 2015 study found that even clearly false headlines are rated as more accurate simply because they have been seen before.

The study (Fazio, Brashier, Payne, and Marsh) was published in 2015, not 2010.

You are vulnerable to believing a lie simply because you have heard it enough times.

Where this comes from

Study: Fazio, Brashier, Payne, and Marsh, 2015, Journal of Experimental Psychology
What the check found: The core finding is accurate, but the date provided (2010) conflicts with the citation provided (2015).
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.