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Clearance rates

NIJ FY24 Research and Evaluation of Policing Practices

Closing Date
Grants.gov Deadline
Application JustGrants Deadline
With this solicitation, NIJ seeks rigorous, applied evaluative research on: (1) police training; (2) police accountability policies and practices; (3) investigative practices to enhance clearance rates; and (4) police officer health and wellness programs.

Cold Cases and Serial Killers (Part 1)

September 2023

In April 2018, the Golden State Killer, Joseph DeAngelo was arrested. NIJ support helped lead to his arrest, and in the aftermath of the arrest, NIJ Social Science Analyst Eric Martin was among those tasked with finding other cases NIJ helped law enforcement solve. Eric joins the show to talk about some of those cases, and answer some broader questions about serial killers: What is a serial killer? Are they on the rise? How do we know how many serial killers are currently active?