Forensic sciences

The National Missing and Unidentified Persons System (NamUs) provides technology, forensic services and investigative support to resolve missing persons cases.

Learn about the NIJ National Sexual Assault Policy Symposium held in September 2016 from its audience members and organizers. The Symposium focused on how the nation is moving forward and finding solutions to the complex issues that arise in sexual assault cases and in testing sexual assault evidence.

This seminar provides the first set of estimates from a national large-scale survey of violence against women and men who identified themselves as American Indian or Alaska Native using detailed behaviorally specific questions on psychological aggression, coercive control and entrapment, physical violence, stalking, and sexual violence. These results are expected to raise awareness and understanding of violence experienced by American Indian and Alaska Native people.

Brian Cerchiai discusses a NIJ-supported a study conducted by the Miami-Dade Police Department on the accuracy of fingerprint examiners. The study found that fingerprint examiners make extremely few errors. Even when examiners did not get an independent second opinion about their decisions, they were remarkably accurate. But when decisions were verified by an independent reviewers, examiners had a 0% false positive, or incorrect identification, rate and a 3% false negative, or missed identification, rate.

Watch Rebecca Campbell discuss the five primary reasons that Detroit developed a large number of sexual assault kits that were not submitted to the crime lab for DNA-testing. Dr. Campbell also talks about how these risk factors" could apply to other jurisdictions.

Interview with Dr. Noël Busch-Armendariz, Ph.D., University of Texas at Austin

Watch Dr. Noël Busch-Armendariz discuss what Houston is learning about the role of notifying sexual assault victims when their rape kits are DNA-tested. In talking about the nationwide implications of the Houston action-research project, Dr. Busch-Armendariz says that the nation is ready to move beyond a focus solely on kit-testing to the larger discussion of how to tackle the complicated issue of sexual assault.

Interview with Dr. Bill Wells, Ph.D., Sam Houston State University

Watch Bill Wells discuss the problem of unsubmitted sexual assault kits in Houston, including some lessons learned to-date. Dr. Wells also talks about the crucial role of victim cooperation in solving sexual assault cases and the Houston Police Department's hiring of a justice advocate to improve investigations.

Watch Caitlin Sulley discuss how action-research team in Houston went about making the action-research project investigating unsubmitted sexual assault kits in Houston as victim-oriented as possible. Ms. Sulley talks about the creation of a hotline for sexual assault victims to call and the police department's hiring of a justice advocate.

Interview with Jon Gould, Ph.D., Director of the Washington Institute for Public and International Affairs Research, American University.

Dr. Gould discusses:

• Bottom line findings from the study "Predicting Erroneous Convictions: A Social Science Approach to Miscarriages of Justice"
• Ten statistically significant factors related to wrongful convictions
• The role of systemic error and tunnel vision

NIJ has funded a study examining the impact of wrongful convictions on crime victims. The study is looking at the impact on the original victim of the crime to get a better understanding of what their service needs are, and how we can better serve them both in terms of policy and practice.

The tragedy of 9/11 posed unprecedented challenges to forensic science, social science, and physical science and technology — the three bedrock sciences at NIJ. Recovering from the attack and preventing another one have became topmost priorities in the 10 years since the attack. As we approach the 10th anniversary, Gary LaFree discusses how that fateful day impacted social scientific priorities and the outcomes from those changes.

Expert Chat Webinar

Expert Chat Webinar

Moderator: Katharine Browning, Ph.D., Senior Social Science Analyst, National Institute of Justice

Panelists: