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Date: April 23, 2024 Tue
Time: 9:43 am
Time: 9:43 am
Results for eyewitnesses
2 results foundAuthor: Steblay, Nancy K. Title: Double-Blind Sequential Police Lineup Procedures: Toward an Integrated Laboratory & Field Practice Perspective Summary: 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. HC field data and laboratory test data converged to demonstrate increased misidentifications when a witness is allowed to view the lineup more than once. The lab study also revealed how reduced lineup size—attrition due to the witness‘s recognition of fillers—can negatively affect eyewitness identification accuracy. Completed grant objectives included: (1) Descriptive data providing the first available baseline measure for blind sequential field lineup practice; (2) Summary of the field lineup implementation process; (3) A laboratory test of the impact on eyewitness decisions of an opportunity for repeated viewing of the sequential lineup (4) A laboratory test of the effect on eyewitness decisions of a reduction in lineup size through witness familiarity with fillers; (5) Integration of laboratory and field data to generate practical, empirical, and theoretical knowledge of effective lineup procedure; and (6) Practical and scholarly presentations and publications as appropriate to law enforcement professionals, the psycho-legal research community, and the NIJ Data Resource Program. Details: Final report to the U.S. Department of Justice, 2007. 110p. Source: Internet Resource: Accessed July 17, 2014 at: http://web.augsburg.edu/~steblay/March2007_Final_NIJ_report.pdf Year: 2007 Country: United States URL: http://web.augsburg.edu/~steblay/March2007_Final_NIJ_report.pdf Shelf Number: 132702 Keywords: Eyewitness IdentificationEyewitnessesPolice Lineups |
Author: Smalarz, Laura Title: Pre-Feedback Eyewitness Statements: Proposed safeguard against feedback effects on evaluations of eyewitness testimony Summary: Mistaken but highly confident eyewitness testimony has been used to convict innocent people in more than 220 criminal cases in the United States. Research has shown that confirming post-identification feedback (e.g., "Good job, you identified the suspect") commonly given to eyewitnesses might be partially to blame for these wrongful convictions because it inflates eyewitnesses' reports of their confidence and other testimony-relevant eyewitness reports (Steblay, Wells, & Douglass, 2014). Indeed, recent work has shown that confirming feedback given to eyewitnesses at the time of the identification ultimately impairs the abilities of evaluators to discern whether an eyewitness made an accurate or a mistaken identification (Smalarz & Wells, 2014). The present research sought to test a novel safeguard for protecting against and correcting for the effects of confirming feedback on evaluations of eyewitness testimony: the pre-feedback eyewitness statements safeguard. Some eyewitnesses, but not others, were asked a series of testimony-relevant questions about the witnessed event and their identification decision prior to receiving confirming feedback or no feedback. These pre-feedback eyewitness statements were videotaped and were later shown to some evaluators, but not others, as the evaluators made judgments about the accuracy of eyewitnesses' testimonies. The videotaped pre-feedback statements safeguard did not appear to protect against or correct for the effects of feedback on evaluations of eyewitness testimony. Importantly, however, a number of unexpected findings emerged in the current work that have the potential to advance our understanding of how post-identification feedback influences eyewitnesses. Future directions in light of these findings are discussed. Details: Ames, IA: Iowa State University, 2015. 90p. Source: Internet Resource: Dissertation: Accessed February 3, 2017 at: http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=5478&context=etd Year: 2015 Country: United States URL: http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=5478&context=etd Shelf Number: 145892 Keywords: Eyewitness TestimonyEyewitnessesWrongful Convictions |