Several items came across the transom today related to my constant meme about the dangers of bias and confirmation bias in investigations and by “forensic” scientists.
First item is a blog at Criminal Law Practitioner, which notes a significant and important change in how photographic line-ups are conducted in Prince Georges County, MD. This is a potential issue in any number of CID, NCIS, OSI, CGIS, investigations.
On February 9, 2014, the Prince George’s County Police Department (MD) announced that it will start conducting photo lineups using the “double-blind” method. The new changes will require police officers to institute two safeguards when showing eyewitnesses a photo lineup: (1) police officers must show the witness the photos one at a time, rather than all at once; and (2) the police officer showing the photos must be unfamiliar with the case. The change is part of an effort to minimize false identifications and subsequently, wrongful convictions. The accuracy of photo lineups has been a hot topic over the past decade as DNA evidence has been used more frequently to overturn convictions. A recent study by the innocence project found that eyewitness misidentification plays a role in over 75% of convictions overturned by DNA testing, making it the single greatest cause of wrongful convictions nationwide.
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