Amid all the concern about ‘Fake News’ and the increasing polarisation in politics, there is a psychological insight that I have seen explained and shared in many forms: when presented with a fact that contradicts a strongly held belief, people often reject the fact and double-down in their belief.
This is the Backfire Effect, a phrase coined by the American academics Brendan Nyhan and Jason Reifler. Here’s part of the abstract to their 2006 paper ‘When Corrections Fail‘:
Can these false or unsubstantiated beliefs about politics be corrected? Previous studies have not tested the efficacy of corrections in a realistic format. We conducted four experiments in which subjects read mock news articles that included either a misleading claim from a politician, or a misleading claim and a correction. Results indicate that corrections frequently fail to reduce misperceptions among the targeted ideological group. We also document several instances of a “backfire effect” in which corrections actually increase misperceptions among the group in question.