Remembering a Crime That You Didn't Commit - The New Yorker - 1 views
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Earlier this year, two forensic psychologists—Julia Shaw, of the University of Bedfordshire, and Stephen Porter, of the University of British Columbia—upped the ante. Writing in the January issue of the journal Psychological Science, they described a method for implanting false memories, not of getting lost in childhood but of committing a crime in adolescence. They modelled their work on Loftus’s, sending questionnaires to each of their participant’s parents to gather background information. (Any past run-ins with the law would eliminate a student from the study.) Then they divided the students into two groups and told each a different kind of false story. One group was prompted to remember an emotional event, such as getting attacked by a dog. The other was prompted to remember a crime—an assault, for example—that led to an encounter with the police. At no time during the experiments were the participants allowed to communicate with their parents.
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What Shaw and Porter found astonished them. “We thought we’d have something like a thirty-per-cent success rate, and we ended up having over seventy,” Shaw told me. “We only had a handful of people who didn’t believe us.” After three debriefing sessions, seventy-six per cent of the students claimed to remember the false emotional event; nearly the same amount—seventy per cent—remembered the fictional crime. Shaw and Porter hadn’t put undue stress on the students; in fact, they had treated them in a friendly way. All it took was a suggestion from an authoritative source, and the subjects’ imaginations did the rest. As Münsterberg observed of the farmer’s son, the students seemed almost eager to self-incriminate.
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Kassin cited the example of Martin Tankleff, a high-school senior from Long Island who, in 1988, awoke to find his parents bleeding on the floor. Both had been repeatedly stabbed; his mother was dead and his father was dying. He called the police. Later, at the station, he was harshly interrogated. For five hours, Tankleff resisted. Finally, an officer told him that his father had regained consciousness at the hospital and named him as the killer. (In truth, the father died without ever waking.) Overwhelmed by the news, Tankleff took responsibility, saying that he must have blacked out and killed his parents unwittingly. A jury convicted him of murder. He spent seventeen years in prison before the real murderers were found. Kassin condemns the practice of lying to suspects, which is illegal in many countries but not here. The American court system, he said, should address it. “Lying puts innocent people at risk, and there’s a hundred years of psychology to show it,” he said.