Thursday, April 12, 2012

Line Up - Process and Effectiveness

One of my favorite television shows of the late 1950s (oops, TMI?) was a police drama set in San Francisco, The Lineup.

Police lineups offer a victim the opportunity to identify their attacker, without the suspect viewing them. For a lineup, five (or six) people of similar appearance are placed in a row, lined up side by side. All but one of the people are fillers, people who are not suspected of committing the crime in question. Photograph lineups are used in this way also. If a photo I.D. is not possible, then a physical lineup follows.

If a weapon in used in the commission of a crime, the victim’s attention may be drawn away from the suspect’s face and make it difficult later for the eyewitness to select the right suspect from the lineup. On the other hand, it is possible that the suspect’s use of bare hands during an attack, such as with the Boston Strangler, will draw attention to unusual features and help an eyewitness to make a positive identification.

Lineups can result in mistaken identifications, however. A number of suspects convicted of crimes on the evidence of eyewitness identification have later been exonerated for various reasons.

5 comments:

  1. I just love on tv how they always ask the victim are you positive that's the person? I think in stressful situations it would be hard to be positive about anything, but then again depending on what happened the image can be burned into your brain. good post.
    -MJ

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  2. Hi MJ,
    Thanks for visiting.
    Once, it was necessary for me to do a picture/photo line up and I was unable to identify the person in question. In the physical line up, I knew immediately. There are so many variables in play, I guess it is different for each situation.

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  3. I think I'd be nervous I'd make a mistake, but then, I've never been in the situation, so I'm glad I've never had to find out!

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  4. Bethie, I can't even imagine having to be in a lineup! I'm sure my guilty expression would give me away!

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