Double-Blind Sequential Police Lineup Procedures: Toward an Integrated Laboratory and Field Practice Perspective

摘要

The project purpose was to join behavioral data from scientific research, current field experience, and new laboratory investigation to advance knowledge of best police lineup practice for law enforcement and research communities. The project was a collaborative effort between the Hennepin County (Minnesota) Attorney's Office and the PI's research laboratory. Three data collection and analysis components were completed: (1) Hennepin County's pilot implementation of double-blind sequential lineup procedures, including 280 field lineups; (2) a laboratory evaluation of the quality of the Hennepin County lineups; and (3) an experimental laboratory test of how revisions to prescribed lineup protocol affect eyewitness lineup decisions. The Hennepin County (HC) results indicate a successful application of double-blind sequential lineups to street investigations. Double-blind sequential lineups are now established county-wide, providing a standardized scientifically-based lineup procedure that has been demonstrated to be practicable in real cases.