It's known as belief perseverance (https://en.wikipedia.org/wiki/Belief_perseverance https://en.wikipedia.org/wiki/Belief_perseverance). A well-studied recent e

It's known as belief perseverance (https://en.wikipedia.org/wiki/Belief_perseverance https://en.wikipedia.org/wiki/Belief_perseverance). A well-studied recent example is how people changed their beliefs after it became known that Iraq did not have weapons of mass destruction as was first suspected: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.586.4414&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.586... (PDF)