I've posted before on the difficulty of correcting false information.
People's attitudes always outlive the "facts" they're supposedly based on.
Now there's new research that shows the danger of false positive information.
It seems that positive information generates a “punishment effect” when it's discredited. People overestimate how much correction is needed.
As a result people end up with a more negative opinion than they otherwise would have.
(By contrast, people underestimate how much correction is needed to adjust for false negative information, leading to belief perseverance.)
The research suggests that bogus credit-claiming or other positive misinformation can have severe repercussions when it's discredited (as it almost always is).
So watch those claims, all you anglers. Not to mention corporate advertising and PR people.