Ben Goldacre, The Guardian, Saturday 1 May 2010
Elections are a time for smearing, and the Mail’s desperate story about Nick Clegg and the Nazis is my favourite so far. Generally the truth comes out, in time. But how much damage can smears do?
A new experiment published this month in the journal “Political Behaviour” sets out to examine the impact of corrections, and what they found was far more disturbing than they expected: far from changing peoples’ minds, if you are deeply entrenched in your views, a correction will only reinforce them.