In this new research, we found that truth beliefs can be successfully conditioned:

Statements - true and false - are rated as more true after their pairing with positive than negative pictures.

This effect bridges research on evaluative conditioning and misinformation.

osf.io/preprints/ps...

2. Repetition can impact truth judgments for implausible statements, but it's not clear that it can do so to the point people come to see them as true. The truth threshold generally was not crossed in related studies either.

doi.org/10.1016/j.co...

1. I believe that this recent research supports several of your points:

psycnet.apa.org/record/2024-...