Calling the Police: Citizen Reporting of Serious Crime, 1979 (ICPSR 8185)
Exploring Alternative Data Sources for the Study of Assault in Miami, Florida, St. Louis, Missouri, and Pittsburgh, Pennsylvania, 1994 -1997 (ICPSR 4358)
Extending Bystander Intervention Prevention Models from College Campuses to the Workplace, United States, 2022 (ICPSR 38659)
Factors Related to Domestic Violence Court Dispositions in a Large Midwestern Urban Area, 1997-1998: [United States] (ICPSR 3010)
Influence of Eyewitness Memory Factors on Plea Bargaining Decisions by Prosecution and Defense Attorneys in California, 2010-2011 (ICPSR 32181)
National Survey of Eyewitness Identification Procedure in Law Enforcement Agencies, 1994-2012 (ICPSR 34274)
Operation Hardcore [Crime] Evaluation: Los Angeles, 1976-1980 (ICPSR 9038)
Prosecutor's Management and Information System (PROMIS), New Orleans, 1979 (ICPSR 8219)
Prosecutor's Management Information System (PROMIS), Rhode Island, 1979 (ICPSR 8288)
Prosecutor's Management Information System (PROMIS), St. Louis, 1979 (ICPSR 8225)
Race and the Decision to Seek the Death Penalty in Federal Cases, 1995-2000 [United States] (ICPSR 4533)
Reduction of False Convictions through Improved Identification Procedures: Further Refinements for Street Practice and Public Policy, 1983-2010, in five countries. (ICPSR 34316)
These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.
This study was a three part project which evaluated the procedural aspects of police lineups. The first part was a meta-analysis of existing laboratory data on comparative eyewitness accuracy rates for sequential versus simultaneous lineups. The second part was three experiments on the elements of current field lineup practices in simultaneous and sequential lineups. The third part was a field experiment in Tucson, Arizona, which tested double-blind simultaneous versus double-blind sequential lineups.
Social Science Research on Wrongful Convictions and Near Misses, 1980-2012 (ICPSR 34522)
These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.
This study examined how the criminal justice system avoids wrongful convictions by comparing violent felony cases that ended in an official exoneration after conviction ("wrongful convictions") with those in which defendants had charges dismissed before trial or were acquitted on the basis of their factual innocence ("near misses"). Data were collected on a total of 460 cases (260 wrongful convictions and 200 near misses), and these cases were compared quantitatively and qualitatively on variables that might explain the different outcomes. These variables included the usual causes of wrongful convictions, such as eyewitness misidentification, false confession, and forensic error, as well as demographic, social, and procedural variables.
Testing a ''Not Sure'' Instruction as a Prophylactic Against the Harmful Impact of System and Estimator Variables on Lineup Identification Accuracy, United States and United Kingdom, 2019-2023 (ICPSR 38947)
Eyewitness lineup identification accuracy is affected by numerous variables, including those that are under the control of the legal system, called system variables (e.g., pre-lineup instructions), and those that are not under the control of the legal system, called estimator variables (e.g., the race of the perpetrator). One of the ultimate goals of eyewitness researchers is to develop procedures that:
- minimize false identifications caused by system and estimator variables (while minimizing any decrease in correct identifications), and
- require few resources for law enforcement to enact.
The project tested the effectiveness of a system variable--providing witnesses with an explicit 'not sure' instruction before viewing the lineup-- that potentially meets both of these criteria. Furthermore, a 'not sure' instruction may act as a prophylactic against the harmful effects of system and estimator variables known to inflate false identifications. The specific objective of the research was to test the effectiveness of this 'not sure' instruction.