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A new study suggests warning people about the type of misinformation they might encounter prevented false information from taking hold in a way that wasn't possible by simply providing people with the correct facts after giving them a false statement. False information can be difficult to dislodge for many reasons, including that people may be motivated by political factors or issues of identity to want to believe things that the evidence doesn't support. University of Cambridge's Sander van der Linden says preemptively "warning people about politically motivated attempts to spread misinformation helps promote and protect ('inoculate') public attitudes about the scientific consensus."