Planting false memories in people’s minds and then erasing them
A small team of researchers from the University of Hagen, Leibniz-Institut für Wissensmedien, Johannes Gutenberg Universität Mainz and the University of Portsmouth has found that false memories planted in the minds of volunteers can be just as easily erased. In their paper published in Proceedings of the National Academy of Sciences, the group describes memory experiments they conducted with volunteers and what they learned from them.
False memories, as their name implies, are those of places or events that have never happened. Prior research has shown that false memories can arise naturally due to cues that the mind uses to create memories of events that might have happened but did not. Prior research has also shown that it is possible to plant false memories in other people using certain psychological tricks. Notably, such tricks have been used in well-known criminal trials to push possible witnesses into remembering things that did not occur.
Typically, these tricks involve suggesting to a person that an event occurred and then using an external trusted source to back up the claim. In this new effort, the researchers attempted to plant false memories in 52 volunteers by creating plausible stories from their childhoods and mixing them with events that actually happened. The researchers then backed up the false memories by asking the parents of the volunteers to claim that they happened, as well. Over the course of several sessions, many of the volunteers came to believe the accounts were true and some of them generated false memories of them.
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