“Social influence can efficiently manipulate existing memory traces, often creating long-lasting false memories,” said study lead author Micah Edelson. The brain appears to do this by activating regions that control emotions, social interactions and memory processing, he added.
Edelson said it could play a role in legal cases where eyewitnesses to an event talk to each other about what happened. And it’s possible but not proven, he added, that the effects of group-think on the memories of children — who “are very prone to social influence” — may be greater than on adults.
More details: Health.com
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Summary of the study: Science Magazine