Learned about them in psych. They essentially said what Yuri Bezmenov said, when people are exposed to new concepts or information (i.e. news) they form an initial opinion, and the study found that something like 90% of people would cement that initial opinion even when presented with evidence it was a lie.

Im sure there are quite a few on the subject, anything you got would be great and ive had no luck. There's one really famous study iirc though. Thanks..