Setting the record straight almost impossibleMore at the link.
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The effect of misinformation on memory and reasoning cannot be completely eliminated, even after it has been corrected numerous times, say Australian psychologists.
Assistant Professor Ullrich Ecker and colleagues from The University of Western Australia outline their findings in a recent article published in Psychonomic Bulletin and Review. Ecker says this effect, known as 'continued influence effect of misinformation,' occurs even if the retraction itself is understood, believed, and remembered.