ABC News Jury Charge Poll, September 1995 (ICPSR 6674)
ABC News "Nightline" Nanny Poll, November 1997 (ICPSR 2504)
ABC News/Washington Post Los Angeles Beating Poll, April 1992 (ICPSR 9941)
Can Jury Instructions Have an Impact on Trial Outcomes, California, 2018 (ICPSR 37956)
CBS News/New York Times Monthly Poll #3 and Call-Back, September 1995 (ICPSR 2150)
Children's Out-of-Court Statements: Effects of Hearsay on Jurors' Decisions in Sacramento County, California, and Maricopa County, Arizona, 1994-1997 (ICPSR 2791)
Improving Juror Comprehension of Forensic Testimony and Its Effects on Decision-Making and Evidence Evaluation, United States, 2020 (ICPSR 39002)
Forensic science plays a vital role in the prosecution of criminal matters. Jurors, however, struggle with understanding both the science and statistics that underlie such testimony. Prior research on the effectiveness of jury instructions in training jurors to understand science and scientific testimony has been split, with some studies finding a beneficial effect, some finding no effect, and some finding that they cause jurors to be skeptical even of high-quality testimony. Here, investigators sought to empirically test the effectiveness of an instructional video at improving jurors' ability to detect low-quality forensic testimony. For the purposes of this study, testimony quality was defined based on the Department of Justice's Uniform Language for Testimony and Reports (DOJ ULTR).
The Gender Effects Paper Study Data made available through ICPSR includes data from the Main Study and a second pilot study conducted by researchers. These data were compiled to examine the impact of a forensic expert's gender on jurors' assessments of the quality of the expert's testimony.
There are two additional datasets associated with this study:
- Main Study: Dataset contains survey results from a sample of 509 jury-eligible U.S adults who participated in the Main Study.
- Pilot Study: Dataset contains survey results from a sample of 229 jury-eligible university undergraduates who completed the Pilot Study.
Juror Discussions About Evidence, 1997-1998: [Arizona] (ICPSR 2687)
Jurors' Judgments About Forensic Identification Evidence, Arizona, 2011-2014 (ICPSR 36169)
This data file describes three different experiments that were designed to examine how differences in the way forensic scientific evidence is communicated affects jurors.
In each experiment, participants consisted of jury-eligible community members in Maricopa County, Arizona. Groups of participants attended a research session in which they were shown a 35-40-minute videotapes of one of two mock criminal trials (one, a rape case, centers around bitemark evidence, and the other, an attempted murder, centers around fingerprint evidence). Within each trial the content of a forensic scientist's testimony was manipulated. These manipulations involved: 1) whether the technique used by the forensic scientist was "high tech" or "low tech," 2) the amount of experience possessed by the forensic scientist, 3) whether the technique used by the forensic scientist had been scientifically validated, 4) whether the forensic scientist conceded that an error was possible, and 5) whether any exculpatory evidence was present at the crime scene.
Immediately following the trial, each individual participants completed a questionnaire in which they gave their individual impressions of the strength of the case. Following that, the group of participant would deliberate and attempt to reach a unanimous verdict. Finally, each individual participant completed an additional questionnaire that again measured perceptions of the case along with individual difference measures and demographics.
Jury and Democracy Project (ICPSR 32801)
Jury Verdicts Database for Cook County, Illinois, and All Counties in California, 1960-1984 (ICPSR 6232)
Multnomah County [Oregon] Jury Project, 1973-1976 (ICPSR 9030)
State Court Organization, 1998: [United States] (ICPSR 2854)
State Court Organizations, 2004 [United States] (ICPSR 4575)
State Court Organization Trends, United States, 1980-2011 (ICPSR 37196)
State Court Organization, United States, 2011 (ICPSR 37195)
This data collection provides detailed comparative information about the structure, policies, and procedures of state-wide trial and appellate court systems for the 50 states and the District of Columbia in the United States for 2011. Information gathered includes: the number of courts and judges, judicial selection, governance of court systems (including judicial funding, administration, staffing, and procedures), jury qualifications and verdict rules, and processing and sentencing procedures of criminal cases. Data collection was carried out by the National Center for State Courts. These data are part of a related collection from the 50 states, the District of Columbia, Puerto Rico, American Samoa, Guam, Northern Mariana Islands, and U.S. Virgin Islands in the United States for the years 1980, 1987, 1993, 1998, and 2004.
In 2011, State Court Organization added new variables to the data collection process. The State Court Organization 2011 file contains the historical variables for 2011, as well as the new variables that were introduced in the 2004 collection. The new variables included data about the courts' information technology systems, including the functions of the court's IT staff, e-filing procedures, accessibility of court information through online systems, and the implementation of case management systems as a means of organizing and managing a court's caseload. The data are reported for trial and appellate courts.
The SCO Trial Court Level Data 2011 file includes a subset of the State Court Organization 2011 file, but only for trial level courts. Some variables in the State Court Organization 2011 file were recoded in the Trial Court Level Data 2011 file.