The Illinois Field Study: A Significant Contribution to Understanding Real World Eyewitness Identification Issues
The Illinois Pilot Program on Eyewitness Identification
In 2006, Illinois law enforcement released the Report to the Illinois Legislature: Illinois Pilot Program on Sequential, Double-Blind Lineup Procedures (“Illinois Pilot Report”), setting forth the data from a year-long, multi-jurisdictional field study examining the efficacy of the sequential, double-blind lineup method. The Illinois data showed that the sequential, double-blind lineups had a known error rate, measured by filler identifications, of 9.2%, whereas the traditional (i.e., simultaneous, non-blind) lineups had a known error rate, also measured by filler identifications, of 2.7%.
The Illinois Pilot Report represents a significant advancement in the study of eyewitness identification. Prior to the Illinois Pilot Report, the advocates of the sequential, double-blind lineups relied upon laboratory studies to support calls for policy changes in eyewitness identification. Some practitioners viewed the laboratory studies with...
KeywordsEyewitness identification Lineups Sequential presentation Double-blind lineups Field studies
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