Police Lineups Start to Face a Fact: Eyes Can Lie. Erica Goode and John Schwartz

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Extractos:

The idea that human memory is frail and suggestible has gradually gained acceptance among leaders in law enforcement, buttressed by more than 2,000 scientific studies demonstrating problems with witness accounts and the DNA exonerations of at least 190 people whose wrongful convictions involved mistaken identifications. About 75,000 witness identifications take place each year, and studies suggest that about a third are incorrect.

In Dallas, for example, detectives take elaborate precautions to make sure that identifications remain untainted and that they will stand up in court.

Witnesses are sent to a special unit of the Police Department devoted entirely to lineups, where they are read instructions and shown photographs by trained lineup officers who have no relationship to the cases.

Photos are presented one at a time instead of all together, and the witnesses then indicate how confident they are in their judgments. The whole process is videotaped, so that it can be viewed by defense lawyers and by the court, if necessary.