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Posted: November 30, 2010 5:50 PM
"People know that they forget faces and know that sometimes if you don't get a good look at something it's hard to remember it. But I don't think people understand just how malleable memory is and how suggestion can actually make recall having seen things that you didn't," [University of Virginia law professor Brandon] Garrett said.House Bill 207 would require that lineup participants are presented sequentially (rather than all at once), a reform shown to decrease the rate at which innocent people are identified. Research has demonstrated that when viewing several subjects at once, witnesses tend to choose the person who looks the most like – but may not actually be – the perpetrator. The proposed law would also require lineups to be “double-blind” in which neither the administrator nor the eyewitness knows who the suspect is. This prevents the administrator of the lineup from providing inadvertent or intentional verbal or nonverbal cues to influence the eyewitness to pick the suspect.
Garrett said he was concerned that so many departments still had no written policy. But, he said, "what I found even more troubling, was . . . the vast majority of those polices do not require double-blind administration and that's the single crucial reform."The Virginia Crime Commission will vote on the bill December 8.
"The double-blind aspect is really important. Even an administrator acting with the best of intentions, or even one that is blind, cannot avoid the problem that the eyewitness will naturally look to the police administrator for guidance and reassurance," he said. "An eyewitness may perceive cues and reinforcement even where it is not intended, so it is crucial that the eyewitness be told that the administrator has no idea which person is the suspect."
Departments that adopt only sequential lineups and not double-blind administration "may have actually made their lineup procedures less accurate and less reliable," he said.
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