US research published in the Journal of Political Behaviour has found new information has as much chance of dislodging an existing belief as the Greens have of winning a lower house majority.
Research subjects "failed to update their beliefs when presented with corrective information that runs counter to their predispositions."
But that's not all. Nyhan told the AFR that correcting some people makes them even more sure they were right all along and can even strenghten misperceptions among the most strongly committed.
People who were are more educated or politically knowledgeable tend to have fewer false beliefs but Nyhan points out they may also be the ones "best able to resisit information they don't want to accept"