[News article] People can be induced to remember crimes they never committed | Ars Technica
Implanting a false memory of committing a crime is easier than you think.
From the 26 January 2015 article
The idea that memories are not as reliable as we think they are is disconcerting, but it’s pretty well-established. Various studies have shown that participants can be persuaded to create false childhood memories—of being lost in a shopping mall or hospitalized, or even highly implausible scenarios like having tea with Prince Charles.
The creation of false memories has obvious implications for the legal system, as it gives us reasons to distrust both eyewitness accounts and confessions. It’s therefore important to know exactly what kinds of false memories can be created, what influences the creation of a false memory, and whether false recollections can be distinguished from real ones.
A recent paper in Psychological Science found that 71 percent of participants exposed to certain interview techniques developed false memories of having committed a crime as a teenager. In reality, none of these people had experienced contact with the police during the age bracket in question.
A number of tactics were used to induce the false memory. Social pressure was applied to encourage recall of details, the interviewer attempted to build a rapport with the participants, and the participants were told that their caregivers had corroborated the facts. They were also encouraged to use visualization techniques to “uncover” the memory.
In each of the three interviews, participants were asked to provide as many details as they could for both events. After the final interview, they were informed that the second memory was false, and asked whether they had really believed the events had occurred. They were also asked to rate how surprised they were to find out that it was false. Only participants who answered that they had genuinely believed the false memory, and who could give more than ten details of the event, were classified as having a true false memory. Of the participants in the group with criminal false stories, 71 percent developed a “true” false memory. The group with non-criminal false stories was not significantly different, with 77 percent of participants classified as having a false memory. The details participants provided for their false memories did not differ significantly in either quality or quantity from their true memories.
This study is only a beginning, and there is still a great deal of work to be done. There are a number of factors that couldn’t be controlled for but which may have influenced the results.
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